CN115079357B

CN115079357B - Reflecting mirror and WDM combined device and method

Info

Publication number: CN115079357B
Application number: CN202210763135.8A
Authority: CN
Inventors: 代凯; 邸校东; 白天雪
Original assignee: Panwoo Integrated Optoelectronic Inc
Current assignee: Panwoo Integrated Optoelectronic Inc
Priority date: 2022-06-30
Filing date: 2022-06-30
Publication date: 2023-05-23
Anticipated expiration: 2042-06-30
Also published as: CN115079357A

Abstract

The embodiment of the application provides a reflector and WDM combined device and a combined method, wherein the combined device comprises a tail fiber assembly, a small glass tube, a large glass tube and a reflecting assembly; the tail fiber component is used for coupling equipment for inputting the light source and equipment for outputting the light source and is used for transmitting the light source; the small glass tube is used for connecting the tail fiber assembly and the large glass tube; the reflecting assembly is installed inside the large glass tube and is used for receiving and reflecting the light source. The optical path transmission device has the effects of improving working efficiency, facilitating operation and reducing total loss of optical path transmission.

Description

Reflecting mirror and WDM combined device and method

Technical Field

The present application relates to the field of optical fiber communications, and in particular, to a combination device and a combination method for a mirror and a WDM.

Background

At present, the transmission of an ASE light source is completed by 980 pump light sources, erbium-doped optical fibers, reflectors, WDM, isolators, filters and beam splitters. 980 pump light source and erbium-doped fiber are welded with WDM, the reflector is welded on one side of WDM, the isolator is welded on another side of WDM, the filter is welded on one side of isolator far away from WDM, and the beam splitter is welded on one side of filter far away from isolator. 980 pump light is transmitted to the erbium-doped optical fiber through WDM, C-band light is excited, one part of the C-band light is output along the isolator through the filter and the beam splitter, the other part of the C-band light is returned to the reflecting mirror along the WDM, and then the reflecting mirror reflects the C-band light, so that the C-band light is sequentially output through the WDM, the isolator, the filter and the beam splitter.

The ASE light source is transmitted mainly through the reflector and the WDM, so that the cost for purchasing a single device by a worker is high, the reflector and the WDM are required to be welded together during an experiment by the worker, the risk of light path damage and reliability is increased, and the welding point is required to be protected, so that a large amount of early work is required to be prepared before the ASE light source is used, the working efficiency is low, and the ASE light source is not easy to operate.

Disclosure of Invention

In order to improve the working efficiency, facilitate the operation and reduce the transmission loss in the optical path, a reflecting mirror and WDM combined device and a combined method are provided.

In a first aspect of the present application, a mirror and WDM combined device is provided.

A reflector and WDM combined device comprises a tail fiber assembly, a small glass tube, a large glass tube and a reflecting assembly;

the tail fiber component is used for coupling equipment for inputting the light source and equipment for outputting the light source and is used for transmitting the light source;

the small glass tube is used for connecting the tail fiber assembly and the large glass tube;

the reflecting assembly is installed inside the large glass tube and is used for receiving and reflecting the light source.

By adopting the technical scheme, the tail fiber assembly, the small glass tube, the large glass tube and the reflecting assembly are assembled together to form the whole equipment. The light source is input from the tail fiber assembly, reflected by the reflecting assembly in the large glass tube and returned to the tail fiber assembly again, and then the light source is output. The whole equipment does not need to be assembled every time when being used, can improve the working efficiency of staff, is simple and convenient to operate, and can reduce the loss in optical path transmission.

Optionally, the pigtail assembly includes a glass capillary and an optical fiber disposed inside the glass capillary and retaining a connector coupled to the devices of the input light source and the output light source.

Optionally, a plurality of optical fibers are provided, and a plurality of optical fibers are inserted into the glass capillary.

Optionally, one end of the glass capillary tube, which is not provided with a joint, is inserted into the small glass tube and is connected through optical cement; and one end of the small glass tube, which is far away from the tail fiber assembly, is connected with the large glass tube through optical cement.

Optionally, the reflective assembly comprises a lens, a WDM, a carrier and a mirror;

the lens is arranged at one end of the big glass tube, which is close to the small glass tube;

the carrier is placed inside the large glass tube and is of a medium-pass structure;

the WDM is attached to one end of the carrier close to the lens;

the reflector is attached to one end of the carrier, which is away from the lens.

Optionally, the Lens is a C-Lens.

Optionally, the glass tube further comprises a protective sleeve, and the protective sleeve is sleeved on the outer walls of the small glass tube and the large glass tube.

In a second aspect of the present application, there is provided a mirror and WDM combining method comprising:

s100: inserting a plurality of optical fibers into the glass capillary, and polishing the end face and plating an antireflection film to prepare a tail fiber assembly;

s200: the WDM and the reflector are respectively attached to two end faces of the carrier and are placed in the big glass tube;

s300: mounting a lens at one end of the large glass tube near the WDM;

s400: inserting the tail fiber assembly into the small glass tube, fixing the small glass tube and the large glass tube together by using optical cement, and fixing one end of the small glass tube, which is close to the tail fiber assembly, and one end of the large glass tube, which is close to the lens, by using optical cement;

s500: and sleeving the protective sleeve on the outer walls of the small glass tube and the large glass tube.

In summary, the present application includes the following beneficial technical effects:

and assembling the tail fiber assembly, the small glass tube, the large glass tube and the reflecting assembly together to form the whole equipment. The light source is input from the tail fiber assembly, reflected by the reflecting assembly in the large glass tube and returned to the tail fiber assembly again, and then the light source is output. The whole equipment does not need to be assembled every time when being used, so that the working efficiency of staff can be improved, and the operation is simple and convenient.

Drawings

FIG. 1 is a cross-sectional view of the overall structure of an embodiment of the present application;

fig. 2 is a block diagram of the steps of a mirror and WDM combining method according to an embodiment of the present application.

Reference numerals illustrate: 10. a pigtail assembly; 11. an optical fiber; 12. a glass capillary; 20. a small glass tube; 30. a large glass tube; 31. a cover plate; 40. a reflective assembly; 41. a lens; 42. WDM; 43. a carrier; 44. a reflecting mirror; 50. and (3) protecting the sleeve.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

In the prior art, in the experiment, two devices of WDM and reflector are mainly used for welding, and other auxiliary devices are added to complete the transmission of the light source. Each time an experiment is carried out, the WDM, the reflector and other auxiliary devices are required to be assembled, the earlier work is complicated, the working efficiency is low, and the welding between the WDM and the reflector can cause light path loss.

Embodiments of the present application are described in further detail below with reference to the drawings attached hereto.

Referring to fig. 1 and 2, a mirror and WDM combined device includes a pigtail assembly 10, a small glass tube 20, a large glass tube 30, a reflection assembly 40, and a protection sleeve 50.

The pigtail assembly 10 is used to couple a device for inputting a light source and a device for outputting a light source and is used for transmission of the light source. The pigtail assembly 10 comprises a glass capillary 12 and two individual optical fibers 11, both optical fibers 11 being inserted inside the glass capillary. The end of the optical fiber 11 not inserted into the glass capillary 12 is left with a joint coupled to the device of the input light source and the output light source. The optical fiber 11 has a reserved connector respectively connected with 980 pump laser and erbium-doped optical fiber, 980 pump laser is used for generating and inputting light source, the generated light source has the advantage of low noise coefficient, and erbium-doped optical fiber is used for receiving the light source after the light source is reflected by the reflection assembly 40 and exciting light of C wave band.

The small glass tube 20 is used to connect the pigtail assembly 10 to the large glass tube 30. The end of the glass capillary 12 remote from the 980 pump laser is inserted into the interior of the small glass tube 20, and the end of the small glass tube 20 remote from the 980 pump laser is bonded to one of the ends of the large glass tube 30 by optical bonding.

The reflecting assembly 40 is for receiving and reflecting the light source. The reflecting assembly 40 comprises a lens 41, a WDM42, a carrier 43 and a mirror. The lens 41 is mounted inside the large glass tube 30 and is located at one end of the large glass tube 30 near the small glass tube 20. The Lens 41 adopts a C-Lens which has good corrosion resistance and extremely high transmittance, and can make the light source better penetrate and reduce the light path loss. The WDM42, carrier 43 and mirror are all placed inside the large glass tube 30. The carrier 43 has a hollow structure, i.e., the carrier 43 is provided with a through hole along the length direction of the large glass tube 30. WDM42 is attached to one end of carrier 43 near lens 41. The reflector 44 is attached to the end of the carrier 43 away from the lens 41, and is used for reflecting the light source. The total reflection mirror 44 is used as the reflection mirror 44, and the total reflection mirror 44 can increase the reflectance and totally reflect the light source.

The large glass tube 30 is provided with a cover plate 31, and the cover plate 31 is mounted at one end of the large glass tube 30 away from the small glass tube 20.

The protective sleeve 50 is sleeved on the outer walls of the small glass tube 20 and the large glass tube 30 and is used for protecting the small glass tube 20 and the large glass tube 30 and preventing the small glass tube 20 and the large glass tube 30 from being damaged by touching during operation.

In summary, the 980 pump laser is connected to a connector of one optical fiber 11, the light source generated by the 980 pump transmits through the optical fiber 11, and passes through the lens 41, the WDM42 and reaches the reflector 44, the reflector 44 reflects all the light sources, and the light sources sequentially pass through the WDM42 and the lens 41 to reach the optical fiber 11 of the device connected to the output light source, the optical fiber 11 is connected to the erbium-doped optical fiber, and the light sources are transmitted to the erbium-doped optical fiber. The erbium-doped fiber excites the light source to emit light in the C-band, and due to the characteristics of the erbium-doped fiber, a part of the light in the C-band enters the next transmission device along the erbium-doped fiber, and the other part returns to the optical fiber 11 and sequentially passes through the lens 41 and the WDM42 to reach the reflecting mirror 44, and the reflecting mirror 44 totally reflects the light in the C-band, sequentially passes through the WDM42, the lens 41 and the optical fiber 11, and is retransmitted to the erbium-doped fiber and enters the next transmission device along the erbium-doped fiber. This process is a light source transmission process. And the pigtail assembly 10, the small glass tube 20, the large glass tube 30, the reflecting assembly 40 and the protective sleeve 50 are assembled into one device, so that the size of the device can be reduced, and the effect of saving space is achieved. And the staff does not need to do excessive earlier work when using, but only need to couple and connect 980 pump lasers and erbium-doped fibers with the joints reserved by the two fibers 11 respectively.

In another aspect, the present embodiment provides a method of combining a mirror with WDM.

S100: the plurality of optical fibers 11 are inserted into the glass capillary 12, and then subjected to end face polishing and antireflection coating to form the pigtail assembly 10.

In this embodiment, there are two optical fibers 11, and one end of each of the two optical fibers 11 is inserted into the glass capillary 12 from one end of the glass capillary 12, and the other end is left outside the glass capillary 12, so that the light source is transmitted over the optical fibers 11 by the device for coupling the input light source and the output light source. Then polishing and plating an antireflection film on the other end of the glass capillary tube 12, so that the end surface glossiness of the glass capillary tube 12 can be improved, the effects of oxidation resistance and acid and alkali resistance can be achieved, and a good protection effect can be achieved.

S200: the WDM42 and the mirror 44 are attached to both end surfaces of the carrier 43, respectively, and are placed inside the large glass tube 30.

It will be appreciated that the carrier 43 is made of glass material, and a through hole is formed in the center of the carrier 43.

The carrier 43 is placed horizontally on the office rack with the current through-hole oriented vertically. The current carrier 43 is coated with an optical paste on the upwardly facing end face and the WDM42 is placed thereon with the center of the WDM42 aligned with the center of the through hole and the WDM42 is tightly bonded to the carrier 43.

After the WDM42 and the carrier 43 are fixed together, the carrier 43 is turned over so that the end of the carrier 43 on which the WDM42 is mounted is directed vertically downward. The current carrier 43 is coated with an optical cement on the upwardly facing end face, and the reflecting mirror 44 is placed thereon such that the center of the reflecting mirror 44 is aligned with the center of the through hole, and the reflecting mirror 44 is tightly bonded to the carrier 43.

After the mirror 44 is fixed to the carrier 43, it is removed from the office frame.

The staff takes out the big glass tube 30, and both ends of the big glass tube 30 are opened. The carrier 43 is put into the inside of the large glass tube 30 from one end of the large glass tube 30, and the circumferential wall of the carrier 43 is brought into close abutment with the inner wall of the large glass tube 30.

The cover plate 31 is taken out, the optical cement is smeared on the cover plate 31, and then the cover plate 31 is pressed on one end of the large glass tube 30 close to the reflecting mirror 44, so that the cover plate 31 and the large glass tube 30 are fixed together.

S300: a lens 41 is mounted at the end of the large glass tube 30 near the WDM 42.

The large glass tube 30 is placed vertically on an office rack with the end of the carrier 43 on which the WDM42 is mounted facing upward. The lens 41 is mounted at the current upward port of the large glass tube 30, the circumferential wall of the lens 41 is abutted against the inner wall of the large glass tube 30, and optical cement is smeared along the gap between the lens 41 and the large glass tube 30, so that the lens 41 and the large glass tube 30 are fixed together.

S400: the pigtail assembly 10 is inserted into the small glass tube 20 and fixed together using an optical cement, and then the end of the small glass tube 20 away from the pigtail assembly 10 and the end of the large glass tube 30 near the lens 41 are fixed by the optical cement.

The worker removes the small glass tube 20, and the inner diameter of the small glass tube 20 is larger than the inner diameter of the large glass tube 30, and the inner diameter of the small glass tube 20 is larger than the outer diameter of the glass capillary 12.

And inserting one end of the tail fiber assembly 10, which is not provided with a joint, into the small glass tube 20, enabling the circumferential wall of the glass capillary tube 12 to be in contact with the inner wall of the small glass tube 20, and smearing optical cement along a gap between the glass capillary tube 12 and the small glass tube 20 to fix the glass capillary tube 12 and the small glass tube 20 together.

The end face of the small glass tube 20, which is far away from the end of the pigtail assembly 10, is coated with optical cement, and the end face of the large glass tube 30, which is close to the lens 41, is coated with optical cement. The two end surfaces currently coated with the optical cement are pressed to fix the small glass tube 20 and the large glass tube 30 together.

S500: the protective sleeve 50 is fitted over the outer walls of the small glass tube 20 and the large glass tube 30.

The worker takes out the protective sleeve 50, one end of the protective sleeve 50 is opened, the other end is closed, and the protective sleeve 50 is made of metal materials. The end of the large glass tube 30 away from the pigtail assembly 10 is moved toward the bottom end of the inner wall of the protective sleeve 50 and the large glass tube 30 is moved toward the inside of the protective sleeve 50 until the large glass tube 30, the small glass tube 20 and the pigtail assembly 10 all enter the inside of the protective sleeve 50. At this time, one end of the large glass tube 30 far away from the pigtail assembly 10 is abutted with the bottom end of the inner wall of the protective sleeve 50, the outer wall of the small glass tube 20 and the outer wall of the large glass tube 30 are abutted with the inner wall of the protective sleeve 50, and the light joint reserved by the pigtail assembly 10 is located outside the protective sleeve 50.

In summary, the two optical fibers 11, the glass capillary 12, the small glass tube 20, the large glass tube 30, the lens 41, the WDM42, the carrier 43, the reflecting mirror 44, the cover plate 31, and the protection sleeve 50 are assembled into a whole, so that the fusion point in the optical path can be reduced, and the optical path loss can be reduced. And the cost of buying the materials is low, which is reduced by half compared with the prior proposal in the background technology.

The foregoing description is only of the preferred embodiments of the present application and is presented as a description of the principles of the technology being utilized. It will be appreciated by persons skilled in the art that the scope of the application referred to in this application is not limited to the specific combinations of features described above, but it is intended to cover other embodiments in which any combination of features described above or their equivalents is possible without departing from the spirit of the application. Such as the above-mentioned features and the technical features having similar functions (but not limited to) applied for in this application are replaced with each other.

Claims

1. A mirror and WDM combination, characterized by: the optical fiber connector comprises a tail fiber assembly (10), a small glass tube (20), a large glass tube (30), a reflecting assembly (40) and a protective sleeve (50);

the tail fiber assembly (10) is used for coupling equipment for inputting a light source and equipment for outputting the light source and is used for transmitting the light source;

the tail fiber assembly (10) comprises a glass capillary (12) and optical fibers (11), wherein the two optical fibers (11) are arranged, one ends of the two optical fibers (11) are inserted into the glass capillary (12) from one end of a glass capillary tube, the other ends of the two optical fibers (11) are reserved outside the glass capillary (12), the other ends of the glass capillary (12) are polished and coated with an antireflection film, and the optical fibers (11) are reserved with joints coupled with equipment for inputting and outputting light sources;

the reflecting component (40) is arranged inside the large glass tube (30) and is used for receiving and reflecting the light source;

the reflecting assembly (40) comprises a lens (41), a WDM (42), a carrier (43) and a reflecting mirror (44);

the lens (41) is arranged at one end of the large glass tube (30) close to the small glass tube (20), and the lens (41) is arranged at the port of the large glass tube (30);

the carrier (43) is placed inside the large glass tube (30) and is of a medium-pass structure;

the WDM (42) is closely attached to one end of the carrier (43) close to the lens (41);

the reflector (44) is closely attached to one end of the carrier (43) which is away from the lens (41);

the small glass tube (20) is used for connecting the tail fiber assembly (10) and the large glass tube (30), one end of the small glass tube (20) is fixed with the tail fiber assembly (10) through optical cement, and the other end of the small glass tube is fixed with the large glass tube (30) through optical cement;

the large glass tube (30) is provided with a cover plate (31), the cover plate (31) is arranged at one end of the large glass tube (30) far away from the small glass tube (20), and the cover plate (31) is connected with the large glass tube (30) through optical cement;

the protective sleeve (50) is sleeved on the outer walls of the small glass tube (20) and the large glass tube (30).

2. The mirror and WDM combination of claim 1, wherein: one end of the glass capillary tube (12) without a joint is inserted into the small glass tube (20) and is connected through optical cement; and one end of the small glass tube (20) far away from the tail fiber assembly (10) is connected with the large glass tube (30) through optical cement.

3. The mirror and WDM combination of claim 1, wherein: the Lens (41) is a C-Lens.