CN213814046U

CN213814046U - Dual-emission BOSA optical device and optical communication device

Info

Publication number: CN213814046U
Application number: CN202023119809.6U
Authority: CN
Inventors: 王忍; 陈水生; 司马卫武
Original assignee: Hunan Guangzhi Communication Technology Co ltd
Current assignee: Hunan Guangzhi Communication Technology Co ltd
Priority date: 2020-12-22
Filing date: 2020-12-22
Publication date: 2021-07-27
Anticipated expiration: 2030-12-22

Abstract

The utility model discloses a dual-emission BOSA optical device, including casing, first light emitter, second light emitter, first isolator, second isolator, 48.5 degrees filtering piece and tail optical fiber. The shell is provided with an accommodating cavity, a first coupling end, a second coupling end and a third coupling end, wherein the first coupling end, the second coupling end and the third coupling end are communicated with the accommodating cavity, the first coupling end and the second coupling end are arranged oppositely, and the third coupling end is perpendicular to the first coupling end and the second coupling end. The first optical transmitter is coupled at the first coupling end, the second optical transmitter is coupled at the third coupling end, and the tail fiber is coupled at the second coupling end. The first isolator is arranged between the first optical transmitter and the tail fiber, the second isolator is arranged between the second optical transmitter and the 48.5-degree filter, and the 48.5-degree filter couples emergent light of the second optical transmitter to the tail fiber. The utility model discloses a transmit at 90 degrees orientation, 180 degrees orientation homoenergetic high powers, and effectively reduce clutter crosstalk and interference through two isolators. Additionally, the utility model also discloses an optical communication device.

Description

Dual-emission BOSA optical device and optical communication device

Technical Field

The utility model relates to an optical communication technical field especially relates to a dual-emission BOSA optical device and optical communication device.

Background

Optical fiber communication has been developed as one of the main communication methods because of its advantages of large communication capacity, long transmission distance, and strong anti-electromagnetic interference capability. The optical transmitter is a main light source for optical fiber communication and is a core device of the optical fiber communication. At present, a single-fiber light emitting device is generally single wavelength, when light signals with two wavelengths need to be emitted simultaneously, two separate light devices need to be configured, so that the application requirements of diversification are difficult to meet, and the cost is high.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a can realize the dual-emission BOSA optical device of two-way high power transmission at single optic fibre.

Another object of the present invention is to provide an optical communication device, wherein the dual-emission BOSA optical device can realize two-way high-power emission in a single optical fiber.

In order to achieve the above object, the utility model provides a dual emission BOSA optical device, it includes casing, first light emitter, second light emitter, first isolator, second isolator, 48.5 degrees filters and tail optical fiber. The shell is provided with an accommodating cavity, a first coupling end, a second coupling end and a third coupling end, wherein the first coupling end, the second coupling end and the third coupling end are communicated with the accommodating cavity, the first coupling end and the second coupling end are arranged oppositely, and the third coupling end is perpendicular to the first coupling end and the second coupling end. The first isolator, the second isolator and the 48.5-degree filter are arranged in the accommodating cavity, the first optical transmitter is coupled to the first coupling end, the second optical transmitter is coupled to the third coupling end, and the tail fiber is coupled to the second coupling end. The first isolator sets up first light emitter with between the pigtail, the second isolator sets up the second light emitter with between the 48.5 degree filter, 48.5 degree filter will the outtake optical coupling of second light emitter extremely the pigtail.

Preferably, the second light emitter comprises a laser diode and a sleeve, the laser diode comprises a tube seat, a tube cap sleeved on the tube seat and a lens arranged at the top of the tube cap, the sleeve is coaxially covered outside the tube cap, a light through hole exposed out of the lens is formed in the top wall of the sleeve, a flange is further arranged on the top wall of the sleeve, the flange is communicated with the light through hole and faces to an accommodating cavity of the light through hole, and the second isolator is arranged in the accommodating cavity.

Preferably, the second light emitter further comprises an axial adjusting ring, and the axial adjusting ring is sleeved outside the sleeve and fixed outside the third coupling end.

Preferably, the axial adjusting ring includes a side wall portion coaxially sleeved outside the sleeve and a connecting portion coaxially connected to one end of the side wall portion, the connecting portion is fixed to an outer side of the third coupling end, and the connecting portion is an annular flange formed by the side wall portion protruding outwards.

Preferably, the lens is an aspherical lens.

Preferably, the first coupling end of the housing extends outward to form an insertion ring, and the first optical transmitter is inserted in the insertion ring.

In order to achieve the above another object, the present invention provides an optical communication apparatus including the dual emission BOSA optical device as described above.

Compared with the prior art, the utility model realizes the bidirectional transmission of a single optical fiber, and the emergent light of the second light emitter positioned in the 90-degree direction is coupled through the 48.5-degree filter plate, so that the point-to-point reflection high-efficiency coupling in the 90-degree direction is realized, and the bidirectional high-power transmission in the 90-degree direction and the 180-degree direction (the first light emitter) is realized; moreover, clutter interference of the first light emitter and the second light emitter is removed through the first isolator and the second isolator respectively, and crosstalk and interference can be effectively reduced.

Drawings

Fig. 1 is a schematic perspective view of a dual emission BOSA optical device according to an embodiment of the present invention.

Fig. 2 is an exploded schematic view of fig. 1.

Fig. 3 is a cross-sectional view of a portion of the structure of fig. 1.

Fig. 4 is an exploded schematic view of a first optical transmitter and a first isolator according to an embodiment of the present invention.

Fig. 5 is an exploded schematic view of a second optical transmitter and a second isolator according to an embodiment of the present invention.

Detailed Description

In order to explain technical contents, structural features, and effects achieved by the present invention in detail, the following description is given in conjunction with the embodiments and the accompanying drawings.

In the description of the present invention, it should be understood that the terms "inside", "outside", "top", "90 degrees", "180 degrees", "vertical" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and thus, are not to be construed as limiting the protection of the present invention.

Referring to fig. 1 to 5, the present invention discloses a dual emission BOSA optical device 100, which includes a housing 10, a first optical transmitter 20, a second optical transmitter 30, a first isolator 40, a second isolator 50, a 48.5 degree filter 60, and a tail fiber 70. The housing 10 has an accommodating chamber 11, and a first coupling end 12, a second coupling end 13 and a third coupling end 14 which are communicated with the accommodating chamber 11, wherein the first coupling end 12 and the second coupling end 13 are arranged oppositely, and the third coupling end 14 is perpendicular to the plane where the first coupling end 12 and the second coupling end 13 are located. The first isolator 40, the second isolator 50, and the 48.5 degree filter 60 are disposed in the accommodating chamber 11, the first optical transmitter 20 is coupled to the first coupling end 12, the second optical transmitter 30 is coupled to the third coupling end 14, and the pigtail 70 is coupled to the second coupling end 13. The first isolator 40 is disposed between the first optical transmitter 20 and the pigtail 70 and faces the first optical transmitter 20 and the pigtail 70, and the emergent light of the first optical transmitter 20 is coupled to the pigtail 70 after passing through the first isolator 40. The second isolator 50 is arranged between the second light emitter 30 and the 48.5-degree filter 60 and is just opposite to the second light emitter 30 and the 48.5-degree filter 60, and the 48.5-degree filter 60 couples emergent light of the second light emitter 30 to the pigtail 70. In this embodiment, the third coupling end 14 is formed at a middle position of one side of the housing 10, and the 48.5 degree filter 60 is disposed at a middle position of the accommodating chamber 11, but it should not be limited thereto.

As shown in fig. 3 and 4, the first light emitter 20 includes a laser diode 21 and a sleeve 22, the laser diode 21 includes a tube seat 211, a tube cap 212 sleeved on the tube seat 211, and a lens 213 disposed on the top of the tube cap 212, the sleeve 22 is coaxially covered outside the tube cap 212, a light-passing hole 221 exposed from the lens 213 is disposed on the top wall of the sleeve 22, a flange 222 is further disposed on the top wall of the sleeve 22, the flange 222 forms an accommodating cavity 223 communicated with the light-passing hole 221 and facing the light-passing hole 221, and the first isolator 40 is disposed in the accommodating cavity 223. The positioning of the first isolator 40 is achieved by providing a flange 222 on the top wall of the sleeve 22, which is simple and easy to implement. Preferably, the lens 213 is an aspheric lens, which is advantageous for achieving high efficiency coupling. Of course, the specific implementation is not limited thereto.

As shown in fig. 1 and 3, the first coupling end 12 of the housing 10 extends outward to form a plug ring 15, and the sleeve 22 of the first light emitter 20 is inserted into the plug ring 15. Because the requirement of the 180-degree direction on the coupling precision is relatively low, the first coupling end 12 of the housing 10 is lengthened to realize fine adjustment of the focal length of the lens 213, so that an adjusting ring for precisely adjusting the focal length of the lens 213 is omitted, and the cost can be saved.

As shown in fig. 5, the structure of the second optical transmitter 30 is the same as that of the first optical transmitter 20, the second optical transmitter 30 also includes a laser diode 31 and a sleeve 32, the laser diode 31 includes a tube seat 311, a tube cap 312 sleeved on the tube seat 311, and a lens 313 arranged on the top of the tube cap 312, the sleeve 32 coaxially covers the tube cap 312, a light-passing hole 321 exposing the lens 313 is arranged on the top wall of the sleeve 32, a flange 322 is further arranged on the top wall of the sleeve 32, the flange 322 forms an accommodating cavity 323 communicating with the light-passing hole 321 and facing the light-passing hole 321, and the second isolator 50 is arranged in the accommodating cavity 323. The positioning of the second isolator 50 is achieved by providing a flange 322 on the top wall of the sleeve 32, which is simple and easy to implement. Preferably, the lens 313 is an aspheric lens, which is advantageous for achieving high-efficiency coupling. Of course, the specific implementation is not limited thereto.

As shown in fig. 3 and 5, the second light emitter 30 further includes an axial adjusting ring 33, and the axial adjusting ring 33 is sleeved on the outer side of the sleeve 32 and fixed on the outer side of the third coupling end 14. Due to the point-to-point coupling between the second light emitter 30 and the 48.5 degree filter 60, the coupling surface is small, the requirement on the coupling precision is high, and the focal length of the lens 313 is accurately adjusted through the adjusting ring 33, so that the power coupling is maximized.

In the embodiment shown in fig. 5, the axial adjustment ring 33 includes a side wall portion 331 coaxially disposed on the outside of the sleeve 32, and a connecting portion 332 coaxially connected to one end of the side wall portion 331, the connecting portion 332 is fixed to the outside of the third coupling end 14, and the connecting portion 332 is an annular flange formed by the side wall portion 331 protruding outwards (in the radial direction). By means of the connecting portion 332, the connecting area of the axial adjusting ring 33 and the third coupling end 14 is increased, so that the axial adjusting ring 33 can be stably fixed at the third coupling end 14.

Compared with the prior art, the dual-emission BOSA optical device 100 of the present invention realizes bidirectional emission on a single optical fiber, and couples the emergent light of the second optical transmitter 30 located in the 90-degree direction through the 48.5-degree filter 60, so as to realize point-to-point reflection high-efficiency coupling in the 90-degree direction, and further realize bidirectional high-power emission in the 90-degree direction and the 180-degree direction (the first optical transmitter 20); moreover, the first isolator 40 and the second isolator 50 remove the clutter interference of the first optical transmitter 20 and the second optical transmitter 30, respectively, so that crosstalk and interference can be effectively reduced.

The above disclosure is only a preferred embodiment of the present invention, and certainly, the scope of the present invention should not be limited thereto, and therefore, the scope of the present invention is not limited to the above embodiments.

Claims

1. A dual-emission BOSA optical device is characterized by comprising a shell, a first optical emitter, a second optical emitter, a first isolator, a second isolator, a 48.5-degree filter and a tail fiber, wherein the shell is provided with an accommodating cavity, and a first coupling end, a second coupling end and a third coupling end which are communicated with the accommodating cavity, the first coupling end and the second coupling end are arranged oppositely, the third coupling end is vertical to the first coupling end and the second coupling end, the first isolator, the second isolator and the 48.5-degree filter are arranged in the accommodating cavity, the first optical emitter is coupled with the first coupling end, the second optical emitter is coupled with the third coupling end, the tail fiber is coupled with the second coupling end, the first isolator is arranged between the first optical emitter and the tail fiber, and the second isolator is arranged between the second optical emitter and the 48.5-degree filter, the 48.5-degree filter plate couples emergent light of the second light emitter to the tail fiber.

2. The dual-emission BOSA optical device of claim 1, wherein the second optical transmitter comprises a laser diode and a sleeve, the laser diode comprises a tube seat, a tube cap sleeved on the tube seat, and a lens disposed on the top of the tube cap, the sleeve is coaxially covered outside the tube cap, a light-passing hole exposing the lens is disposed on a top wall of the sleeve, a flange is further disposed on the top wall of the sleeve, the flange forms an accommodating cavity communicated with the light-passing hole and facing the light-passing hole, and the second isolator is disposed in the accommodating cavity.

3. The dual-emission BOSA optical device of claim 2, wherein the second optical transmitter further comprises an axial adjusting ring sleeved outside the sleeve and fixed outside the third coupling end.

4. The dual-emission BOSA optical device of claim 3, wherein the axial adjusting ring comprises a sidewall portion coaxially fitted on the outside of the sleeve and a connecting portion coaxially connected to one end of the sidewall portion, the connecting portion is fixed to the outside of the third coupling end, and the connecting portion is an annular flange formed by the sidewall portion protruding outward.

5. The dual emission BOSA light device of claim 2, wherein said lens is an aspheric lens.

6. The dual-emission BOSA optical device of claim 1, wherein the first coupling end of the housing is extended outward to form a plug-in ring, and the first optical transmitter is inserted into the plug-in ring.

7. An optical communication apparatus comprising the dual emission BOSA optical device according to any one of claims 1 to 6.