CN212586603U - Beam expanding optical fiber coupling device - Google Patents
Beam expanding optical fiber coupling device Download PDFInfo
- Publication number
- CN212586603U CN212586603U CN202021430361.7U CN202021430361U CN212586603U CN 212586603 U CN212586603 U CN 212586603U CN 202021430361 U CN202021430361 U CN 202021430361U CN 212586603 U CN212586603 U CN 212586603U
- Authority
- CN
- China
- Prior art keywords
- coupling device
- optical fiber
- connector
- fiber coupling
- beam expanding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Optical Couplings Of Light Guides (AREA)
Abstract
The utility model relates to an optical module field, concretely relates to beam expanding optical fiber coupling device, beam expanding optical fiber coupling device is including beam expanding optical fiber, connector, main control board and encapsulation subassembly, beam expanding optical fiber is including expanding bundle end and conventional end, and the end that expands of beam expanding optical fiber sets up in the connector, the main control board sets up in the encapsulation subassembly, connector and encapsulation subassembly coupling connection, compared with the prior art, the utility model discloses a design a beam expanding optical fiber coupling device, effectively promoted the coupling efficiency of optical module, simultaneously, also reduced the light-emitting power requirement to laser chip, and then made the whole consumption of optical module reduce, the life of optical module increases; furthermore, the device has low sensitivity of the coupling position, solves the problem that the tracking error exceeds the standard, further reduces the welding process requirement on the coupling device, and ensures the stable output of the optical signal in the optical module.
Description
Technical Field
The utility model relates to an optical module field, concretely relates to beam expanding fiber coupling device.
Background
In the optical communication industry, an optical transmission module is mainly a signal transmission module which converts an electrical signal into an optical signal and converts the optical signal into the electrical signal; wherein, the device that is used for converting the electrical signal into optical signal among the optical transmission module is optical transmission module, and at present, optical transmission module's optical path structure is that laser chip light-emitting assembles the receptacle that gets into by 9um single mode fiber through lens, because the light beam diameter that assembles through lens far surpasses single mode fiber's mode field diameter far away for this receptacle's coupling efficiency is lower, and optical loss is great, and the coupling degree of difficulty is big, needs to improve laser chip's light-emitting requirement, perhaps needs to improve light output through increasing the drive current to laser chip.
Along with the development of the industry and the requirement for reducing energy consumption, the requirement is also put forward on the power consumption of the module, and if the light emitting requirement of the laser chip is to be improved, the overall power consumption of the optical module is inevitably influenced; further, if the light output is improved by increasing the driving current of the laser chip, the chip junction temperature will be continuously increased, which directly affects the service life and stability of the optical module, and further, the optical module of the current structure is coupled with the single-mode fiber coupling device with the fiber core of 9um and the mode field diameter of 10.5um because of the need, the coupling position deviation is sensitive, the coupling flat area is small, the tracking error exceeds the standard under the action of high and low temperature or assembly stress, so that the structure has extremely high welding requirements on the coupling device.
Therefore, it is critical to the art to design a beam expanding fiber coupling device with large fiber mode field diameter, high coupling efficiency and low loss.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a beam expanding optical fiber coupling device, overcome that coupling efficiency among the prior art is low, the chip loss is big and to the welding requirement defect such as high of device.
The utility model provides a technical scheme that its technical problem adopted is: provided is a beam expanding fiber coupling device, which is preferable to be characterized in that: the optical fiber coupling device expands beam, including expanding beam optical fiber, connector, main control board and encapsulation subassembly, expand beam optical fiber and expand beam end and conventional end, expand beam optical fiber expand beam end and set up in the connector, the main control board sets up in the encapsulation subassembly, connector and encapsulation subassembly coupling are connected.
In a preferred embodiment, the beam expanding fiber coupling device further comprises a semiconductor temperature controller for controlling the temperature of the main control board, and the semiconductor temperature controller is mounted in the package assembly through eutectic solder or silver paste.
Preferably, the expanded beam fiber coupling device further includes an optical isolator for reducing return loss, and the optical isolator is disposed in the connector.
The packaging assembly comprises a tube seat and a tube cap, the tube cap is connected with the connector, the tube seat and the tube cap are fixed through welding, and the main control board is packaged inside the tube seat and the tube cap.
The preferred scheme is that the pipe cap is provided with a condenser lens, and light beams are coupled into the beam expanding optical fiber after being converged by the condenser lens.
The main control board comprises a chip and a substrate, the substrate is attached to the semiconductor temperature controller through silver paste and is electrically connected through gold wires, and the chip is attached to the substrate through eutectic solder.
The main control board further comprises a thermistor for detecting temperature, a filter capacitor for reducing current ripple, a monitor for monitoring the working state of the device and a turning mirror for changing the path of the light beam, wherein the thermistor, the filter capacitor, the monitor and the turning mirror are all attached to the substrate through silver paste.
Wherein, the substrate is preferably made of aluminum nitride or silicon substrate.
Wherein, the preferred scheme is be provided with the lantern ring between connector and the encapsulation subassembly, the connector passes through the lantern ring and fixes with the encapsulation subassembly.
The preferred scheme is that the beam expanding optical fiber is arranged in the connector after the beam expanding end is assembled into the ferrule.
The beneficial effects of the utility model reside in that, compared with the prior art, the utility model discloses a design a beam expanding optical fiber coupling device, effectively promoted the coupling efficiency of optical module, simultaneously, also reduced the light-emitting power requirement to laser chip, and then made the whole consumption of optical module reduce, the life of optical module increases; furthermore, the device has low sensitivity of the coupling position, solves the problem that the tracking error exceeds the standard, further reduces the welding process requirement on the coupling device, and ensures the stable output of the optical signal in the optical module.
Drawings
The invention will be further explained with reference to the drawings and examples, wherein:
fig. 1 is a schematic structural diagram of an expanded beam optical fiber coupling device according to the present invention;
FIG. 2 is a schematic view of the semiconductor temperature controller of the present invention;
fig. 3 is a schematic structural diagram of the main control board in the present invention;
fig. 4 is an installation schematic diagram of the main control board in the present invention;
fig. 5 is a schematic view of the installation of the pipe cap of the present invention;
fig. 6 is a schematic view of the installation of the optical isolator according to the present invention.
Detailed Description
The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
As shown in fig. 1, the present invention provides a preferred embodiment of an expanded beam fiber coupling device.
The utility model provides an expand beam optical fiber coupling device to refer to fig. 1, expand beam optical fiber coupling device includes beam expanding optical fiber, connector 100, main control board 200 and encapsulation subassembly 300, beam expanding optical fiber is including expanding bundle end and conventional end, and beam expanding optical fiber's the end setting that expands is in connector 100, main control board 200 sets up in encapsulation subassembly 300, connector 100 and encapsulation subassembly 300 coupling are connected.
Specifically, the beam expanding fiber is pre-manufactured, the beam expanding fiber is formed by precisely firing a single-mode fiber, the mode field diameter of the fiber is increased by expanding the single-mode fiber, the diameter of a light beam converged by a lens is often far larger than that of the single-mode fiber, and therefore, not only is the optical coupling difficulty large and the coupling efficiency low, but also the optical loss is large, so that the light emitting requirement of a laser chip needs to be increased, or the driving current of the laser chip is increased to improve the optical output, so that the overall power consumption and the utilization rate of the laser chip are directly influenced; therefore, it is necessary to expand the single-mode fiber to increase the diameter of the mode field of the fiber, so that the light beams converged by the lens are all incident into the mode field of the single-mode fiber, and it should be noted that, in this embodiment, the expansion of the expanded beam fiber is limited to one end that needs to be coupled with the lens, i.e., the expanded beam end, and the other end is still a single-mode, i.e., a conventional end, where specific parameters of the expanded beam end need to be determined according to a specific optical design.
The expanded beam fiber is connected to the connector 100 in a manner that the expanded end of the expanded beam fiber is assembled into a ferrule and then disposed in the connector 100.
Further, the encapsulation assembly 300 comprises a tube seat 310 and a tube cap 320, the tube cap 320 is connected with the connector 100, the tube seat 310 and the tube cap 320 are fixed by welding, the main control board 200 is encapsulated inside the tube seat 310 and the tube cap 320, the beam expanding end of the expanded beam fiber is arranged in the connector 100 and coupled with the encapsulation assembly 300, wherein the tube cap 320 is a tube cap with a condenser lens, and the condenser lens 321 is arranged on the top surface of the tube cap 320.
Specifically, the beam expanding optical fiber coupling device uses the tube seat as a base, realizes the sealing to the main control panel as main packaging component with the pipe cap, the pipe cap top surface is provided with the condensing lens, the condensing lens is used for assembling the light beam, and the light beam assembles the coupling and gets into the beam expanding optical fiber that has made in advance after passing through the pipe cap of taking the condensing lens, beam expanding optical fiber coupling device is through behind the mode field diameter of increase optic fibre for its coupling efficiency promotes greatly, thereby realizes high coupling efficiency, low optical loss.
Further, the expanded beam fiber coupling device further includes an optical isolator for reducing return loss, the optical isolator being disposed within the connector 100.
Specifically, the optical isolator is a passive optical device only allowing one-way light to pass through, the working principle of the optical isolator is based on the non-reciprocity of Faraday rotation, the light reflected by the optical fiber echo can be well isolated by the optical isolator, and the Faraday effect of a magneto-optical crystal is mainly utilized; the optical isolator is a passive device which has the characteristics of low forward insertion loss, high reverse isolation degree and high return loss, allows light to pass in one direction and prevents the light from passing in the opposite direction, and has the function of limiting the light direction, so that the light can be transmitted in a single direction only, and the light reflected by the optical fiber return wave can be well isolated by the optical isolator, thereby improving the light wave transmission efficiency; in this embodiment, the optical isolator is arranged in the beam expanding optical fiber isolation device, so that optical loss can be effectively reduced, the utilization rate of a chip is improved, and the stability of the chip is improved; wherein, the optical isolator is coupled with the packaging component 300 after being arranged in the connector 100, and a collar 400 is further arranged between the connector 100 and the packaging component 300, and the connector 100 is fixed with the packaging component 300 through the collar 400.
Further, the expanded beam fiber coupling device further includes a semiconductor temperature controller 500 for controlling the temperature of the main control board, and the semiconductor temperature controller 500 is mounted in the package assembly 300 by eutectic solder or silver paste.
Specifically, in this embodiment, the semiconductor temperature controller 500 employs a semiconductor refrigerator, which is a device that utilizes the thermoelectric effect of a semiconductor to generate cooling energy, and is also called a thermoelectric refrigerator. Specifically, two different metals are connected by using a conductor, when direct current is conducted, the temperature of one joint is reduced, the temperature of the other joint is increased, a semiconductor refrigerator is arranged in the beam expanding optical fiber coupling device and mainly used for dissipating heat, the laser chip is unstable when the temperature is too high, the temperature of the laser chip can be effectively reduced through the semiconductor refrigerator, and therefore the working stability of the laser chip is improved, referring to fig. 2, the semiconductor temperature controller 500 is attached to the tube seat 310 through eutectic solder a (silver paste b can also be used).
As shown in fig. 3, the present invention provides a preferred embodiment of the main control board.
Referring to fig. 3, the main control board includes a chip 210 and a substrate 220, the substrate 220 is attached to a semiconductor temperature controller 500 through a silver paste b and electrically connected to the semiconductor temperature controller 500 through a gold wire, and the chip 210 is attached to the substrate 220 through a eutectic solder a.
The chip 210 is a laser chip, and the substrate 220 is made of aluminum nitride or a silicon-based material.
Further, the main control board further includes a thermistor 230 for detecting temperature, a filter capacitor 240 for reducing current ripple, a monitor 250 for monitoring the operating state of the device, and a turning mirror 260 for changing the path of the light beam, wherein the thermistor 230, the filter capacitor 240, the monitor 250, and the turning mirror 260 are all attached to the substrate 220 by silver paste b.
Specifically, the thermistor 230 is arranged to cooperate with the semiconductor temperature controller 500 to continuously control the temperature of the laser chip, so as to improve the stability of the laser chip and further improve the coupling efficiency of the device; by arranging the filter capacitor 240 for reducing the current ripple, the influence of the current ripple on an optical signal is effectively reduced, so that the stable driving of a laser chip is realized, and the coupling efficiency of the device is further improved; the monitor 250 mainly realizes the monitoring of the laser chip back light, and further monitors the working condition of the laser chip and provides a compensation control signal by taking the current form as feedback, so as to improve the coupling efficiency of the device.
As shown in fig. 2 and 4-6, the present invention provides the assembling steps of the expanded beam fiber coupling device:
1. referring to fig. 2, the semiconductor temperature controller 500 is attached to the socket 310 by eutectic solder a (silver paste b may be used);
2. referring to fig. 4, the main control board 200 is placed on the semiconductor temperature controller 500 and connected to the socket 310 through gold wires;
3. referring to fig. 5, the cap 320 is welded to the socket 310;
4. after the beam expanding ends of the beam expanding optical fibers are assembled into a ferrule, the ferrule is arranged in the connector 100;
5. fixedly disposing the optical isolator on the connector 100;
6. referring to fig. 6, the connector 100 is secured to the package structure 300 by the collar 400;
the utility model discloses a design a high coupling efficiency's beam expanding fiber coupling device, reduced the luminous power requirement to laser chip to improve laser chip's utilization ratio, and then reduced the consumption of device, and then increased the life of laser chip and whole device.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the scope of the present invention, which is intended to cover all equivalent changes and modifications made within the scope of the present invention.
Claims (10)
1. A beam expanding fiber coupling device, comprising: the optical fiber coupling device expands beam, including expanding beam optical fiber, connector, main control board and encapsulation subassembly, expand beam optical fiber and expand beam end and conventional end, expand beam optical fiber expand beam end and set up in the connector, the main control board sets up in the encapsulation subassembly, connector and encapsulation subassembly coupling are connected.
2. The expanded beam fiber coupling device according to claim 1, wherein: the beam expanding optical fiber coupling device further comprises a semiconductor temperature controller used for controlling the temperature of the main control board, and the semiconductor temperature controller is attached in the packaging assembly through eutectic solder or silver paste.
3. The expanded beam fiber coupling device according to claim 1, wherein: the expanded beam fiber coupling device further includes an optical isolator for reducing return loss, the optical isolator being disposed within the connector.
4. The expanded beam fiber coupling device according to claim 1, wherein: the encapsulation subassembly includes tube socket and pipe cap, the pipe cap is connected with the connector, the tube socket passes through welded fastening with the pipe cap, the main control board encapsulation is inside tube socket and pipe cap.
5. The expanded beam fiber coupling device according to claim 4, wherein: and the tube cap is provided with a condenser lens, and light beams are coupled into the beam expanding optical fiber after being converged by the condenser lens.
6. The expanded beam fiber coupling device according to claim 2, wherein: the main control board comprises a chip and a substrate, the substrate is pasted on the semiconductor temperature controller through silver glue and is electrically connected through gold wires, and the chip is pasted on the substrate through eutectic solder.
7. The expanded beam fiber coupling device according to claim 6, wherein: the main control board further comprises a thermistor for detecting temperature, a filter capacitor for reducing current ripples, a monitor for monitoring the working state of the device and a turning mirror for changing the path of the light beam, wherein the thermistor, the filter capacitor, the monitor and the turning mirror are all attached to the substrate through silver paste.
8. The expanded beam fiber coupling device according to claim 6, wherein: the substrate is made of aluminum nitride or silicon base material.
9. The expanded beam fiber coupling device according to claim 1, wherein: be provided with the lantern ring between connector and the encapsulation subassembly, the connector passes through the lantern ring and fixes with the encapsulation subassembly.
10. The expanded beam fiber coupling device according to claim 1, wherein: the beam expanding optical fiber is arranged in the connector after the beam expanding end is assembled into a ferrule.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021430361.7U CN212586603U (en) | 2020-07-20 | 2020-07-20 | Beam expanding optical fiber coupling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021430361.7U CN212586603U (en) | 2020-07-20 | 2020-07-20 | Beam expanding optical fiber coupling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212586603U true CN212586603U (en) | 2021-02-23 |
Family
ID=74658468
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021430361.7U Active CN212586603U (en) | 2020-07-20 | 2020-07-20 | Beam expanding optical fiber coupling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212586603U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024045073A1 (en) * | 2022-08-31 | 2024-03-07 | 华为技术有限公司 | Connector, communication system, and vehicle |
-
2020
- 2020-07-20 CN CN202021430361.7U patent/CN212586603U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024045073A1 (en) * | 2022-08-31 | 2024-03-07 | 华为技术有限公司 | Connector, communication system, and vehicle |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102043208B (en) | Cooled laser module | |
| US5068865A (en) | Semiconductor laser module | |
| CN206378622U (en) | A kind of coaxial packaging optic communication device | |
| CN100428591C (en) | Encapsulation structure and method of the high-speed semiconductor light emission component | |
| CN201004104Y (en) | Small cooling light radiation component | |
| US6659659B1 (en) | High-speed optical sub-assembly utilizing ceramic substrate, direct coupling and laser welding | |
| JP2003262766A (en) | Optical coupler | |
| CN101872760A (en) | Photoelectric conversion module | |
| CN212031793U (en) | Optical module | |
| CN212586603U (en) | Beam expanding optical fiber coupling device | |
| CN201829809U (en) | Semiconductor laser module with various detection sensors and protectors | |
| JP2002006183A (en) | Optical coupling device | |
| CN102315586A (en) | Semiconductor laser module with multiple detection sensors and protection devices | |
| CN109980498A (en) | A kind of high power pulse-width tunable semiconductor laser module | |
| CN104122634B (en) | A kind of optically-coupled equipment being applied to opto-electronic device encapsulation | |
| JPH03120884A (en) | Semiconductor laser module | |
| CN113534359A (en) | Optical module | |
| CN215575808U (en) | Optical transmission module of TO encapsulation | |
| CN211878244U (en) | Lens and optical fiber integrated coupling device of semiconductor laser | |
| CN211627884U (en) | Light emitter integrated with driving chip and laser | |
| CN211180308U (en) | High-power pulse tail laser subassembly | |
| CN204558880U (en) | Coaxial packaging band refrigeration DFB generating laser | |
| CN111884040A (en) | SLD laser coaxial packaging method | |
| CN210430410U (en) | Single-mode single-frequency high-optical-power semiconductor laser light source for monitoring wind speed | |
| CN105161972A (en) | Optical fiber output large-power semiconductor laser module |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 518000 No. 35, Cuijing Road, Pingshan New District, Shenzhen, Guangdong Patentee after: Ona Technology (Shenzhen) Group Co.,Ltd. Address before: No.35 Cuijing Road, Pingshan District, Shenzhen City, Guangdong Province Patentee before: O-NET COMMUNICATIONS (SHENZHEN) Ltd. |