CN116953857A - Optical device - Google Patents
Optical device Download PDFInfo
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- CN116953857A CN116953857A CN202310967883.2A CN202310967883A CN116953857A CN 116953857 A CN116953857 A CN 116953857A CN 202310967883 A CN202310967883 A CN 202310967883A CN 116953857 A CN116953857 A CN 116953857A
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- core optical
- optical fiber
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- core
- optical fibers
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/3873—Connectors using guide surfaces for aligning ferrule ends, e.g. tubes, sleeves, V-grooves, rods, pins, balls
- G02B6/3885—Multicore or multichannel optical connectors, i.e. one single ferrule containing more than one fibre, e.g. ribbon type
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/3833—Details of mounting fibres in ferrules; Assembly methods; Manufacture
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/3833—Details of mounting fibres in ferrules; Assembly methods; Manufacture
- G02B6/3855—Details of mounting fibres in ferrules; Assembly methods; Manufacture characterised by the method of anchoring or fixing the fibre within the ferrule
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Couplings Of Light Guides (AREA)
Abstract
本发明公开了一种光学器件，该光学器件包括：多芯光纤组件包括至少一根多芯光纤，单芯光纤组件包括多根单芯光纤、第一毛细管以及玻璃棒；多芯光纤用于将光束扇出至多根单芯光纤，多根单芯光纤用于将光束扇入至多芯光纤；多根单芯光纤位于第一毛细管的内壁与玻璃棒的外壁之间，且多根单芯光纤均与第一毛细管的内壁以及玻璃棒的外壁相切。采用上述技术手段，光学器件包括多芯光纤组件和单芯光纤组件，能够实现光束的扇入及扇出，提高光束的传输效率；通过在将多根单芯光纤设置在第一毛细管的内壁与玻璃棒的外壁之间，且多根单芯光纤均与第一毛细管的内壁以及玻璃棒的外壁相切，能够实现对多根单芯光纤的定位，有利于实现光束耦合。
The invention discloses an optical device. The optical device includes: a multi-core optical fiber assembly including at least one multi-core optical fiber; a single-core optical fiber assembly including a plurality of single-core optical fibers, a first capillary tube and a glass rod; the multi-core optical fiber is used to The light beam is fanned out to multiple single-core optical fibers, and the multiple single-core optical fibers are used to fan the light beam into the multi-core optical fiber; the multiple single-core optical fibers are located between the inner wall of the first capillary tube and the outer wall of the glass rod, and the multiple single-core optical fibers are all It is tangent to the inner wall of the first capillary tube and the outer wall of the glass rod. Using the above technical means, the optical device includes a multi-core optical fiber component and a single-core optical fiber component, which can realize the fan-in and fan-out of the light beam and improve the transmission efficiency of the light beam; by arranging multiple single-core optical fibers between the inner wall of the first capillary tube and Between the outer walls of the glass rod, and the multiple single-core optical fibers are tangent to the inner wall of the first capillary tube and the outer wall of the glass rod, the positioning of the multiple single-core optical fibers can be achieved, which is beneficial to realizing beam coupling.
Description
Technical Field
The invention relates to the technical field of optical fiber communication, in particular to an optical device.
Background
With the development of optical Fiber technology, a new optical Fiber form is presented in the market, and compared with the existing conventional single-Core optical Fiber (only one Core transmits light inside a single optical Fiber), the Multi-Core optical Fiber (MCF) has been applied in part of fields such as sea cable for long-distance transmission in the foreign market, and the Multi-Core optical Fiber can save the volume of the optical cable and improve the transmission efficiency.
At present, the conventional single-core optical fiber is connected with a connector in a corresponding connection mode, all the connector ferrules are single-channel single-hole ferrules, and MCF optical fibers are led in and applied, and a single multi-core optical fiber channel is required to be fanned into a single-channel single-core optical fiber so as to be connected with the connector; similarly, at the other end of the multi-core optical fiber, the light emitted by the multi-channel laser is fanned into the multi-core optical fiber through the single-channel single-core optical fiber and is transmitted through the multi-core optical fiber; therefore, fan-in and fan-out are realized at two ends of the multi-core optical fiber, and are key technologies for guiding and applying the multi-core optical fiber.
At present, a fused tapering technology or a three-dimensional waveguide technology is generally adopted to realize the fan-in and fan-out function of the multi-core optical fiber, but the product yield is low, the process is complex, and the cost is high.
Disclosure of Invention
The invention provides an optical device for realizing the fan-in and fan-out of light beams, improving the transmission efficiency of the light beams, realizing the positioning of a plurality of single-core optical fibers and being beneficial to realizing the coupling of the light beams.
An optical device provided in an embodiment of the present invention includes: a multi-core optical fiber assembly and a single-core optical fiber assembly;
the multi-core optical fiber assembly comprises at least one multi-core optical fiber, and the single-core optical fiber assembly comprises a plurality of single-core optical fibers, a first capillary tube and a glass rod;
the multi-core optical fiber is used for fanning out light beams to a plurality of single-core optical fibers, and the single-core optical fibers are used for fanning in the light beams to the multi-core optical fiber;
the plurality of single-core optical fibers are positioned between the inner wall of the first capillary tube and the outer wall of the glass rod, and the plurality of single-core optical fibers are tangent to the inner wall of the first capillary tube and the outer wall of the glass rod.
Optionally, a first included angle is formed by connecting lines between centers of two adjacent single-core optical fibers and the center of the first capillary along the circumferential direction of the inner wall of the first capillary;
any two first included angles are the same.
Optionally, the outer wall of the glass rod includes a plurality of first positioning grooves, the number of the first positioning grooves is the same as that of the single-core optical fibers, and the first positioning grooves are used for limiting the positions of the single-core optical fibers;
and/or, the inner wall of the first capillary comprises a plurality of second positioning grooves, the number of the second positioning grooves is the same as that of the single-core optical fibers, and the second positioning grooves are used for limiting the positions of the single-core optical fibers.
Optionally, the cross section of the first positioning groove comprises a V shape;
and/or the number of the groups of groups,
the cross section shape of the second positioning groove comprises a V shape.
Optionally, the multi-core optical fiber assembly further includes: a second capillary and a first glass tube; the multi-core optical fiber is positioned in the second capillary tube, and the second capillary tube is adhered and fixed in the first glass tube;
the single core optical fiber assembly further includes: a second glass tube; the first capillary is adhesively fixed in the second glass tube.
Optionally, the optical device further comprises: a third glass tube;
the outer wall of the first glass tube and the outer wall of the second glass tube are adhered and fixed on the inner wall of the third glass tube.
Optionally, the single core optical fiber includes a thermally expanded beam optical fiber.
Optionally, the multi-core optical fiber assembly further comprises a first lens, and the multi-core optical fiber assembly further comprises a second lens;
the first lens is positioned on a transmission path of the multi-core optical fiber output light beam and is used for collimating the light beam output by the multi-core optical fiber;
the second lens is positioned on the transmission path of the single-core optical fiber output light beam and is used for collimating the light beam output by the single-core optical fiber.
Optionally, the first lens comprises a self-focusing lens.
Optionally, the second lens comprises a spherical lens.
According to the technical scheme provided by the embodiment of the invention, the optical device comprises the multi-core optical fiber assembly and the single-core optical fiber assembly, the multi-core optical fiber assembly comprises at least one multi-core optical fiber, the single-core optical fiber assembly comprises a plurality of single-core optical fibers, light beams emitted by the multi-core optical fibers can be coupled into the single-core optical fibers, and light beams emitted by the single-core optical fibers can be coupled into the multi-core optical fibers, so that fan-in and fan-out of the optical device can be realized, and the transmission efficiency of the light beams is improved. In addition, single core fiber assembly still includes first capillary and glass stick, and many single core optical fibers are located between the inner wall of first capillary and the outer wall of glass stick, and many single core optical fibers all tangent with the inner wall of first capillary and the outer wall of glass stick, so can realize the location to many single core optical fibers, be convenient for couple the light beam in the optical device, and then improve the working property and the reliability of optical device.
It should be understood that the description in this section is not intended to identify key or critical features of the embodiments of the invention or to delineate the scope of the invention. Other features of the present invention will become apparent from the description that follows.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of an optical device according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of an optical device of FIG. 1 taken along section line A-A';
FIG. 3 is a schematic cross-sectional view of another optical device provided in FIG. 1 along section line A-A';
FIG. 4 is a schematic cross-sectional view of yet another optical device provided in FIG. 1 along section line A-A';
fig. 5 is a schematic cross-sectional view of yet another optical device provided in fig. 1 along section line A-A'.
Detailed Description
In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein.
Fig. 1 is a schematic structural diagram of an optical device according to an embodiment of the present invention, and fig. 2 is a schematic structural diagram of a cross-section of the optical device according to fig. 1 along a section line A-A', where, as shown in fig. 1 and 2, the optical device includes: a multi-core optical fiber assembly 10 and a single-core optical fiber assembly 20; the multi-core optical fiber assembly 10 includes at least one multi-core optical fiber 101, and the single-core optical fiber assembly 20 includes a plurality of single-core optical fibers 201, a first capillary 202, and a glass rod 203; the multi-core optical fiber 101 is used for fanning out a light beam to a plurality of single-core optical fibers 201, and the plurality of single-core optical fibers 201 are used for fanning out the light beam to the multi-core optical fiber 101; the plurality of single-core optical fibers 201 are located between the inner wall of the first capillary 202 and the outer wall of the glass rod 203, and the plurality of single-core optical fibers 201 are tangent to the inner wall of the first capillary 202 and the outer wall of the glass rod 203.
Specifically, the multicore fiber 101, that is, the multicore fiber, includes a plurality of cores, and can improve the spatial density of the fiber, and has a strong transmission capability for light beams. The single core optical fiber 201 is a single core optical fiber. Further, as a possible embodiment, the light beam emitted from the multi-core optical fiber 101 can be coupled into a plurality of single-core optical fibers 201. As another possible embodiment, the light beams emitted from the plurality of single-core optical fibers 201 can also be coupled into the multi-core optical fiber 101. Therefore, the optical device can fan in and fan out the light beam, and the transmission efficiency of the light beam is improved.
Further, the plurality of single-core optical fibers 201 are located between the inner wall of the first capillary 202 and the outer wall of the glass rod 203, and the plurality of single-core optical fibers 201 are tangent to the inner wall of the first capillary 202 and the outer wall of the glass rod 203. That is, a plurality of single-core optical fibers 201 can be fixed in the inner wall of the first capillary 202 and the outer wall of the glass rod 203, so that positioning of the single-core optical fibers 201 can be achieved.
Illustratively, the first capillary 202 may be a hollow glass rod of glass material.
Specifically, the plurality of single-core optical fibers 201 are arranged between the inner wall of the first capillary 202 and the outer wall of the glass rod 203, and any adjacent two single-core optical fibers 201 are tangent. In other words, the plurality of single-core optical fibers 201 are uniformly fixed between the inner wall of the first capillary 202 and the outer wall of the glass rod 203, which can facilitate the light beam coupling, so that the light beam emitted from the multi-core optical fiber 101 can be uniformly coupled into the single-core optical fiber 201.
It is understood that the number of cores of the multi-core optical fiber 101 is the same as the number of single-core optical fibers 201. For example, taking the case that the multi-core optical fiber 101 includes 8 cores as an example, when the multi-core optical fiber 101 includes 8 cores, the number of single-core optical fibers 201 is 8, and along the circumferential direction of the inner wall of the first capillary 202, the included angle between the cores of any two adjacent single-core optical fibers 201 is 45 °, that is, the 8 single-core optical fibers 201 are arranged in a 45 ° array between the inner wall of the first capillary 202 and the outer wall of the glass rod 203, which is beneficial to improving the coupling efficiency of the light beam.
The optical device provided by the embodiment of the invention comprises a multi-core optical fiber assembly and a single-core optical fiber assembly, wherein the multi-core optical fiber assembly comprises at least one multi-core optical fiber, the single-core optical fiber assembly comprises a plurality of single-core optical fibers, light beams emitted by the multi-core optical fibers can be coupled into the single-core optical fibers, and light beams emitted by the single-core optical fibers can be coupled into the multi-core optical fibers, so that the fan-in and fan-out of the optical device can be realized, and the transmission efficiency of the light beams is improved. In addition, single core fiber assembly still includes first capillary and glass stick, and many single core optical fibers are located between the inner wall of first capillary and the outer wall of glass stick, and many single core optical fibers all tangent with the inner wall of first capillary and the outer wall of glass stick, so can realize the location to many single core optical fibers, be convenient for couple the light beam in the optical device, and then improve the working property and the reliability of optical device.
Optionally, with continued reference to fig. 2, the connection lines between the centers P of two adjacent single-core optical fibers 201 and the center O of the first capillary 202 form a first included angle θ along the circumferential direction (X direction as shown in fig. 2) of the inner wall of the first capillary 202, and the angles of any two first included angles θ are the same.
Specifically, the first included angle θ is formed by the connection line between the center P of two adjacent single-core optical fibers 201 and the center O of the first capillary 202, and the angles of any two first included angles θ are the same, that is, the single-core optical fibers 201 are uniformly fixed between the inner wall of the first capillary 202 and the outer wall of the glass rod 203, that is, the plurality of single-core optical fibers 201 are uniformly distributed in the circumference between the inner wall of the first capillary 202 and the outer wall of the glass rod 203, so that the light beams in the optical device can be conveniently coupled, and the working performance and reliability of the optical device are improved.
The first angle θ may be, for example, 30 °, 45 °, or the like, and the angle of the first angle θ is not specifically limited in the embodiment of the present invention.
It can be understood that the inner diameter of the inner wall of the first capillary 202 and the diameter of the glass rod 203 can be controlled according to the diameter of the single-core optical fiber 201, so that the single-core optical fiber 201 can be circumferentially distributed in the area between the inner wall of the first capillary 202 and the outer wall of the glass rod 203, and the coupling efficiency of the single-core optical fiber 201 to the light beam can be ensured.
Optionally, fig. 3 is a schematic cross-sectional structure of another optical device provided in fig. 1 along a section line A-A', and as shown in fig. 3, an outer wall of a glass rod 203 includes a plurality of first positioning grooves 2031, where the number of first positioning grooves 2031 is the same as that of single-core optical fibers 201, and the first positioning grooves 2031 are used to define positions of the single-core optical fibers 201; and/or, the inner wall of the first capillary 202 includes a plurality of second positioning grooves 2021, the number of the second positioning grooves 2021 is the same as that of the single-core optical fibers 201, and the second positioning grooves 2021 are used for defining the positions of the single-core optical fibers 201.
As a possible embodiment, the outer wall of the glass rod 203 includes a plurality of first positioning grooves 2031, the number of the first positioning grooves 2031 is the same as the number of the single-core optical fibers 201, the first positioning grooves 2031 are used to define the positions of the single-core optical fibers 201, that is, the single-core optical fibers 201 can be positioned in the first positioning grooves 2031, further, the cross-sectional shape of the first positioning grooves 2031 includes a "V" shape, so that it can be ensured that the single-core optical fibers 201 can be uniformly positioned in the first positioning grooves 2031 when the number of the single-core optical fibers 201 is small and insufficient to be circumferentially distributed in the area between the inner wall surrounding the first capillary 202 and the outer wall of the glass rod 203, so that the coupling efficiency of the single-core optical fibers 201 to the light beam can be ensured.
Illustratively, taking the case that the number of single-core optical fibers 201 is equal to 3 as an example, when the multi-core optical fiber 101 includes 3 cores, the single-core optical fiber assembly 20 includes 3 single-core optical fibers 201, and the outer wall of the glass rod 203 includes 3 first positioning grooves 2031, that is, the 3 single-core optical fibers 201 may be arranged in an array of 120 ° between the inner wall of the first capillary 202 and the outer wall of the glass rod 203.
As another possible embodiment, fig. 4 is a schematic cross-sectional structure of a further optical device provided in fig. 1 along a section line A-A', as shown in fig. 4, an inner wall of the first capillary 202 includes a plurality of second positioning grooves 2021, the number of the second positioning grooves 2021 is the same as that of the single-core optical fibers 201, the second positioning grooves 2021 are used for defining positions of the single-core optical fibers 201, that is, the single-core optical fibers 201 may be positioned in the second positioning grooves 2021, further, a cross-sectional shape of the second positioning grooves 2021 includes a "V" shape, so that when the number of single-core optical fibers 201 is small enough to be circumferentially distributed in an area between the inner wall surrounding the first capillary 202 and an outer wall of the glass rod 203, the single-core optical fibers 201 may be uniformly positioned in the second positioning grooves 2021, so that on one hand diversity of the optical device setting can be realized, and on the other hand, coupling efficiency of the single-core optical fibers 201 to light beams can be ensured.
As yet another possible embodiment, fig. 5 is a schematic cross-sectional structure of still another optical device provided in fig. 1 along a section line A-A', and as shown in fig. 5, the number of single-core optical fibers 201 is 3, the outer wall of the glass rod 203 includes 3 first positioning grooves 2031, and the inner wall of the first capillary 202 includes 3 second positioning grooves 2021. That is, the inner wall of the first capillary 202 and the outer wall of the glass rod 203 both include positioning grooves, further, the cross-sectional shape of the first positioning groove 2031 includes a "V" shape, and the cross-sectional shape of the second positioning groove 2021 includes a "V" shape, so that on one hand, diversity of the optical device design can be realized, and on the other hand, the positioning of the single-core optical fiber 201 in the positioning grooves can be further ensured, and further, the coupling efficiency of the single-core optical fiber 201 to the light beam can be ensured.
It can be understood that the cross-sectional shapes of the first positioning groove and the second positioning groove can be arc-shaped which is matched with the edge of the single-core optical fiber, or can be rectangular, and the positioning of a plurality of single-core optical fibers can be realized.
Optionally, with continued reference to fig. 1, the multi-core fiber assembly 10 further includes: a second capillary 102 and a first glass tube 103; the multicore fiber 101 is located in the second capillary 102, and the second capillary 102 is adhesively fixed in the first glass tube 103; the single core optical fiber assembly 20 further includes: a second glass tube 204; the first capillary 202 is adhesively secured within the second glass tube 204.
Specifically, the second capillary 102 may be a hollow glass rod made of glass, and a hollow area thereof is used for placing the multicore fiber 101. The second capillary 102 may be secured in the first glass tube 103 by glue bonding, and the first capillary 202 may be secured in the second glass tube 204 by glue bonding. In other words, the multi-core optical fiber assembly 10 and the single-core optical fiber assembly 20 can be assembled by using separate glass tubes, so that the multi-core optical fiber assembly 10 and devices inside the single-core optical fiber assembly 20 can be assembled in steps and in working positions, and then the multi-core optical fiber assembly 10 and the single-core optical fiber assembly 20 are assembled into the fan-in fan-out optical device, and the yield of finished products can be improved.
Optionally, with continued reference to fig. 1, the optical device further includes: a third glass tube 30; the outer wall of the first glass tube 103 and the outer wall of the second glass tube 204 are adhesively fixed to the inner wall of the third glass tube 30.
Specifically, the outer wall of the first glass tube 103 and the outer wall of the second glass tube 204 are fixed on the inner wall of the third glass tube 30, so that the multi-core optical fiber assembly 10 and the single-core optical fiber assembly 20 can be fixed on two ends of the third glass tube 30 through glue adhesion, and in addition, the multi-core optical fiber fan-in fan-out device can be formed through assembly processes such as dimming, controlling the distance between the multi-core optical fiber assembly 10 and the single-core optical fiber assembly 20, fixing glue and the like, and on the other hand, the transmission of light beams in the optical device can be ensured, and the coupling efficiency of the light beams is improved.
Optionally, with continued reference to fig. 1, the single core optical fiber 201 includes a thermally expanded beam optical fiber 2011.
Specifically, the thermally expanded beam fiber 2011 expands the core diameter by firing at high temperature. By way of example, the mode field diameter of the thermally expanded beam fiber 2011 may be 30 μm, and by enlarging the mode field diameter of the fiber core, the receiving range of the light beam may be increased, and thus the coupling efficiency of the light beam may be increased, and the working performance and reliability of the optical device may be improved.
Optionally, with continued reference to fig. 1, the multi-core fiber assembly 10 further includes a first lens 104, and the single-core fiber assembly 20 further includes a second lens 205; the first lens 104 is located on the transmission path of the light beam output by the multi-core optical fiber 101, and is used for collimating the light beam output by the multi-core optical fiber 101; the second lens 205 is located on the transmission path of the light beam output from the single-core optical fiber 201, and is used for collimating the light beam output from the single-core optical fiber 201.
Specifically, as a possible implementation manner, the light beam emitted from the multi-core optical fiber 101 may be collimated by the first lens 104 to form a collimated light beam, and then coupled into the single-core optical fiber 201, and further, the first lens 104 includes a self-focusing lens (G-lens), so that the coupling efficiency of the light beam can be improved, and the reliability of the optical device can be improved.
As another possible implementation manner, the light beam emitted from the single-core optical fiber 201 may be collimated by the second lens 205 to form a collimated light beam, and then coupled into the multi-core optical fiber 101, and further, the second lens 205 includes a spherical lens (Conventional lens, C-lens), so that the coupling efficiency of the light beam can be improved, and the reliability of the optical device can be improved.
In summary, the optical device provided by the embodiment of the invention can realize the fanout of the light beam from the single-core optical fiber to the multi-core optical fiber and the fanout of the light beam from the multi-core optical fiber to the single-core optical fiber through the multi-core optical fiber assembly and the single-core optical fiber assembly, that is, the optical device is a multi-core optical fiber fanout-and-fanout device. In addition, the second capillary in the multicore fiber assembly can be adhered and fixed in the first glass tube through glue, and the first capillary in the single-core fiber assembly can be adhered and fixed in the second glass tube through glue, namely, independent packaging of the multicore fiber assembly and the single-core fiber assembly can be respectively realized through the first glass tube and the second glass tube, and the yield of finished products is improved. Further, the outer wall of the first glass tube and the outer wall of the second glass tube are adhered and fixed on the inner wall of the third glass tube, so that the multi-core optical fiber assembly and the single-core optical fiber assembly can be packaged at two ends of the third glass tube on one hand, and fan-in and fan-out of the light beam can be realized; on the other hand, the light beam can be ensured to be transmitted in the third glass tube, and the coupling efficiency of the light beam can be improved. It should be noted that, through setting up first constant head tank and/or the inner wall of first capillary at the outer wall of glass stick and setting up the second constant head tank, so can make many single core optic fibre evenly distributed between the inner wall of first capillary and the outer wall of glass stick, and then can improve the coupling efficiency of light beam, improve the reliability of optical device.
Note that the above is only a preferred embodiment of the present invention and the technical principle applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, and that various obvious changes, rearrangements, combinations, and substitutions can be made by those skilled in the art without departing from the scope of the invention. Therefore, while the invention has been described in connection with the above embodiments, the invention is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the invention, which is set forth in the following claims.
Claims (10)
1. An optical device, comprising: a multi-core optical fiber assembly and a single-core optical fiber assembly;
the multi-core optical fiber assembly comprises at least one multi-core optical fiber, and the single-core optical fiber assembly comprises a plurality of single-core optical fibers, a first capillary tube and a glass rod;
the multi-core optical fiber is used for fanning out light beams to a plurality of single-core optical fibers, and the single-core optical fibers are used for fanning in the light beams to the multi-core optical fiber;
the plurality of single-core optical fibers are positioned between the inner wall of the first capillary tube and the outer wall of the glass rod, and the plurality of single-core optical fibers are tangent to the inner wall of the first capillary tube and the outer wall of the glass rod.
2. The optical device according to claim 1, wherein a first included angle is formed by a line connecting centers of two adjacent single-core optical fibers with a center of the first capillary in a circumferential direction of an inner wall of the first capillary;
any two first included angles are the same.
3. The optical device of claim 2, wherein the outer wall of the glass rod includes a plurality of first positioning grooves, the number of the first positioning grooves being the same as the number of the single-core optical fibers, the first positioning grooves being used to define the single-core optical fiber positions;
and/or, the inner wall of the first capillary comprises a plurality of second positioning grooves, the number of the second positioning grooves is the same as that of the single-core optical fibers, and the second positioning grooves are used for limiting the positions of the single-core optical fibers.
4. The optical device of claim 3, wherein the cross-sectional shape of the first detent comprises a "V" shape;
and/or the number of the groups of groups,
the cross section shape of the second positioning groove comprises a V shape.
5. The optical device of claim 1, wherein the multi-core fiber assembly further comprises: a second capillary and a first glass tube; the multi-core optical fiber is positioned in the second capillary tube, and the second capillary tube is adhered and fixed in the first glass tube;
the single core optical fiber assembly further includes: a second glass tube; the first capillary is adhesively fixed in the second glass tube.
6. The optical device of claim 5, further comprising: a third glass tube;
the outer wall of the first glass tube and the outer wall of the second glass tube are adhered and fixed on the inner wall of the third glass tube.
7. The optical device of claim 1, wherein the single core optical fiber comprises a thermally expanded beam optical fiber.
8. The optical device of claim 1, wherein the multi-core fiber assembly further comprises a first lens, the multi-core fiber assembly further comprising a second lens;
the first lens is positioned on a transmission path of the multi-core optical fiber output light beam and is used for collimating the light beam output by the multi-core optical fiber;
the second lens is positioned on the transmission path of the single-core optical fiber output light beam and is used for collimating the light beam output by the single-core optical fiber.
9. The optical device of claim 8, wherein the first lens comprises a self-focusing lens.
10. The optical device of claim 8, wherein the second lens comprises a spherical lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310967883.2A CN116953857A (en) | 2023-08-02 | 2023-08-02 | Optical device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310967883.2A CN116953857A (en) | 2023-08-02 | 2023-08-02 | Optical device |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101776779A (en) * | 2010-01-27 | 2010-07-14 | 哈尔滨工程大学 | Capillary-type multi-core optical fiber and preparation method thereof |
| US20180292615A1 (en) * | 2013-02-01 | 2018-10-11 | Commscope, Inc. Of North Carolina | Transitioning multi-core fiber to plural single core fibers |
| CN112904485A (en) * | 2021-01-29 | 2021-06-04 | 东北大学 | Space division multiplexing/demultiplexing device for multi-core optical fiber and preparation method thereof |
| CN215728939U (en) * | 2021-08-04 | 2022-02-01 | 广州奥鑫通讯设备有限公司 | Multi-core optical fiber fan-in fan-out device based on hot core expansion array tail fiber |
| CN218728145U (en) * | 2022-10-11 | 2023-03-24 | 武汉楚星光纤应用技术有限公司 | Optical fiber beam combining structure and multi-core optical fiber fan-in and fan-out module |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101776779A (en) * | 2010-01-27 | 2010-07-14 | 哈尔滨工程大学 | Capillary-type multi-core optical fiber and preparation method thereof |
| US20180292615A1 (en) * | 2013-02-01 | 2018-10-11 | Commscope, Inc. Of North Carolina | Transitioning multi-core fiber to plural single core fibers |
| CN112904485A (en) * | 2021-01-29 | 2021-06-04 | 东北大学 | Space division multiplexing/demultiplexing device for multi-core optical fiber and preparation method thereof |
| CN215728939U (en) * | 2021-08-04 | 2022-02-01 | 广州奥鑫通讯设备有限公司 | Multi-core optical fiber fan-in fan-out device based on hot core expansion array tail fiber |
| CN218728145U (en) * | 2022-10-11 | 2023-03-24 | 武汉楚星光纤应用技术有限公司 | Optical fiber beam combining structure and multi-core optical fiber fan-in and fan-out module |
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