CN217879740U - Single-fiber bidirectional optical device - Google Patents
Single-fiber bidirectional optical device Download PDFInfo
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- CN217879740U CN217879740U CN202221948763.5U CN202221948763U CN217879740U CN 217879740 U CN217879740 U CN 217879740U CN 202221948763 U CN202221948763 U CN 202221948763U CN 217879740 U CN217879740 U CN 217879740U
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- optical device
- light receiving
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- fiber bidirectional
- receiving component
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- 230000003287 optical effect Effects 0.000 title claims abstract description 75
- 239000000835 fiber Substances 0.000 title claims abstract description 29
- 230000002457 bidirectional effect Effects 0.000 title claims description 22
- 230000005540 biological transmission Effects 0.000 claims abstract description 23
- 239000000758 substrate Substances 0.000 claims description 23
- 238000001514 detection method Methods 0.000 claims description 18
- 238000004806 packaging method and process Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000004891 communication Methods 0.000 abstract description 6
- 230000008878 coupling Effects 0.000 abstract description 6
- 238000010168 coupling process Methods 0.000 abstract description 6
- 238000005859 coupling reaction Methods 0.000 abstract description 6
- 239000013307 optical fiber Substances 0.000 description 6
- 238000005538 encapsulation Methods 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000005693 optoelectronics Effects 0.000 description 1
- 238000012858 packaging process Methods 0.000 description 1
- 238000012536 packaging technology Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model relates to an optical communication technical field discloses a two-way optical device of single fiber, which comprises a housin, optical transmission module, light receiving component, wavelength division multiplexer and adapter, the casing has the holding chamber, optical transmission module, the holding intracavity is all located to light receiving component and wavelength division multiplexer, the left and right sides in the holding intracavity is located to optical transmission module and light receiving component, optical transmission module includes first base plate and installs the laser instrument on first base plate, light receiving component includes the second base plate and installs the detector on the second base plate, first base plate and second base plate all link to each other with the casing, wavelength division multiplexer locates between optical transmission module and the light receiving component, the adapter is installed in the outside of casing, and the light path direction of adapter is to wavelength division multiplexer. The utility model discloses a two-way optical device of single fiber can reduce the coupling number of times of the inside chip of optical device and components and parts, improves optical device's production efficiency effectively.
Description
Technical Field
The utility model relates to an optical communication technical field especially relates to a two-way optical device of single fiber.
Background
In the optical fiber communication technology, a single-fiber bidirectional optical device is an optoelectronic device formed by integrating light transmission and light reception in the same package, and the optical device realizes the transmission and reception of optical signals in one optical fiber by utilizing the wavelength division multiplexing technology to realize the function of bidirectional transmission of data. The single-fiber bidirectional optical device has small volume and good reliability, can save optical fibers and reduce production cost, and is widely used in the technical field of optical communication.
Butterfly-shaped packaging optical devices are one of the types of common single-fiber bidirectional optical devices, butterfly-shaped packaging is named due to the appearance, the packaging form is always adopted by an optical communication system, a semiconductor laser, a semiconductor refrigerator, an optical isolator, a backlight detection tube, a thermistor and other components are integrated in a metal-packaged tube shell, and then optical signals emitted by the laser are coupled to optical fibers through a certain optical system for transmission. However, such conventional butterfly-shaped packaged optical devices generally attach the components to the metal ceramic tube shell separately, and the components need to be attached to the tube seat multiple times during assembly, which is troublesome to operate, low in production efficiency and not beneficial to batch manufacturing.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a two-way optical device of single fiber reduces the coupling number of times of the inside components and parts of butterfly encapsulation optical device, solves the technical problem that butterfly encapsulation optical device packaging efficiency is low.
In order to realize the above object, the utility model provides a single fiber bidirectional optical device, it includes casing, optical transmission subassembly, light receiving component, wavelength division multiplexer and adapter, the casing has the holding chamber, optical transmission subassembly the light receiving component reaches wavelength division multiplexer all locates the holding intracavity, optical transmission subassembly with optical receiving component locates the left and right sides in the holding intracavity, optical transmission subassembly include first base plate and install in laser on the first base plate, optical receiving component include the second base plate and install in detector on the second base plate, first base plate reaches the second base plate all with the casing links to each other, wavelength division multiplexer locates optical transmission subassembly with between the optical receiving component, the adapter install in the outside of casing, just the light path direction of adapter aligns wavelength division multiplexer.
Optionally, the first substrate includes a first plate body and a second plate body, the first plate body and the second plate body connected with the first plate body at an included angle, the light emitting assembly includes a backlight detection chip, the laser is installed on the first plate body, the backlight detection chip is installed on the second plate body, and the laser is electrically connected with the backlight detection chip.
Optionally, the light emitting assembly includes at least two sets of the laser and the backlight detection chip, and the at least two sets of the laser and the backlight detection chip are disposed along the front-back direction of the first substrate.
Optionally, the light receiving assembly includes at least two detectors, and the at least two detectors are disposed along a front-back direction of the second substrate.
Optionally, the light receiving assembly includes at least two transimpedance amplifiers, the transimpedance amplifiers and the detectors are arranged in pairs, and the detectors are electrically connected to the transimpedance amplifiers.
Optionally, still include the adjustable ring, the adjustable ring install in the casing with between the adapter, just the adjustable ring cover is located the periphery of adapter.
Optionally, the display device further includes pins, and the pins are mounted on the left and right sides of the housing and electrically connected to the first substrate and the second substrate.
Optionally, the portable electronic device further comprises a cover plate, and the cover plate and the housing are covered to define the accommodating cavity.
Optionally, the cover plate and the housing are hermetically sealed to form the accommodating cavity.
Optionally, the laser is a DFB laser.
The embodiment of the utility model provides a two-way optical device of single fiber compares with prior art, and its beneficial effect lies in:
the utility model discloses single-fiber bidirectional optical device pastes dress earlier and constitutes light emission subassembly on first base plate with laser instrument and the detection chip that is shaded, paste dress with detector and trans-impedance amplifier again and constitute light receiving component on the second base plate, then directly paste the dress in the casing with light emission subassembly and light receiving component and wavelength division multiplexer that the pre-assembling is good, carry out airtight encapsulation to the casing again, the casing that will encapsulate at last constitutes single-fiber bidirectional optical device with adapter coupling welding, reduce the coupling number of times of the inside chip of casing and components and parts effectively, do not need the rethread to paste the small chip of dress volume and components and parts respectively, thereby improve the production efficiency of product.
Drawings
Fig. 1 is a schematic structural diagram of a single-fiber bidirectional optical device according to an embodiment of the present invention.
In the figure, 1, a housing; 2. a light emitting assembly; 21. a first substrate; 211. a first plate body; 212 a second plate body; 22. a laser; 23. a backlight detection chip; 3. a light receiving member; 31. a second substrate; 32. a detector; 33. a transimpedance amplifier; 4. a wavelength division multiplexer; 5. an adapter; 6. an adjusting ring; 7. and (7) a pin.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
In the description of the present invention, it should be noted that the face facing the front of the human body is defined as "front face", and the face facing the back of the human body is defined as "back face". The terms "upper", "lower", "front", "rear", "inner", "outer", and the like in the present invention are used to indicate the positional relationship based on the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the devices and elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should be understood that the terms "first", "second", etc. are used to describe various information, but the information should not be limited to these terms, and these terms are only used to distinguish the same type of information from each other. For example, a "first" message may also be referred to as a "second" message, and similarly, a "second" message may also be referred to as a "first" message, without departing from the scope of the present invention.
As shown in fig. 1, the utility model discloses a two-way optical device of single fiber of preferred embodiment, it includes casing 1, optical transmission module 2, light receiving module 3, wavelength division multiplexer 4 and adapter 5, casing 1 has holding chamber 10, optical transmission module 2 light receiving module 3 reaches wavelength division multiplexer 4 all locates in the holding chamber 10, optical transmission module 2 with light receiving module 3 locates the left and right sides in holding chamber 10, optical transmission module 2 include first base plate 21 and install in laser 22 on the first base plate 21, light receiving module 3 include second base plate 31 and install in detector 32 on the second base plate, first base plate 21 and second base plate 31 all with casing 1 links to each other, wavelength division multiplexer 4 locates light transmitting module 2 with between the light receiving module 3, adapter 5 install in the outside of casing 1, just the light path direction of adapter 5 aims at wavelength division multiplexer 4.
Based on the above technical solution, during assembly, in this embodiment, the laser 22 is firstly attached to the first substrate 21, the detector 32 is attached to the second substrate 31, then the preassembled first substrate 21 and second substrate 31 and the wavelength division multiplexer 4 are attached to the housing 1, then the housing 1 is packaged, and finally the packaged housing 1 and the adapter 5 are coupled and welded to form the single-fiber bidirectional optical device of this embodiment. The utility model discloses paste laser instrument 22 and detector 32 in advance and constitute light emission subassembly 2 and light receiving element 3 on first base plate 21 and second base plate 31 respectively to encapsulate in casing 1, thereby reduce the coupling number of times of the inside components and parts of the two-way optical device of single fiber, no longer need paste each components and parts that the dress is small respectively, thereby improve the production efficiency of product effectively.
Specifically, in this embodiment, the first substrate 21 includes a first board body 211 and a second board body 212, the first board body 211 and the second board body 212 are connected at an included angle, the emission assembly 2 further includes a backlight detection chip 23, the laser 22 is installed on the first board body 211 and used for emitting an optical signal, the backlight detection chip 23 is installed on the second board body 212, wherein the laser 22 is electrically connected to the backlight detection chip 23, so that the backlight detection chip 23 can detect whether the laser 22 emits light normally.
Further, the light emitting assembly 2 in this embodiment includes at least two sets of the laser 22 and the backlight detecting chip 23, and the at least two sets of the laser 22 and the backlight detecting chip 23 are disposed along the front-back direction of the first substrate 21. When transmitting optical signals, the wavelength division multiplexer 4 collects and couples optical paths with different wavelengths emitted by the laser 22 to the same optical fiber, thereby realizing the communication function of transmitting optical signals with different wavelengths by a single optical fiber.
Further, the light receiving module 3 in this embodiment includes at least two detectors 32, and the at least two detectors 32 are disposed along the front-rear direction of the second substrate 31. When receiving the optical signal, the wavelength division multiplexer 4 demultiplexes the optical signal into multiple optical paths with different wavelengths, and the different detectors 32 respectively receive the optical signals with different wavelengths.
Further, in this embodiment, the receiving assembly 3 further includes at least two transimpedance amplifiers 33, the transimpedance amplifier 33 and the detector 32 are arranged in pair, the detector 32 is electrically connected to the transimpedance amplifier 33, and the transimpedance amplifier 33 amplifies the optical signal received by the detector 32.
Further, the present embodiment further includes an adjusting ring 6, the adjusting ring 6 is installed between the housing 1 and the adapter 5, and the adjusting ring 6 is sleeved on the outer periphery of the adapter 5 for adjusting the length of the adapter 5.
Further, the present embodiment further includes pins 7, and the pins 7 are mounted on the left and right sides of the housing 1, electrically connected to the first substrate 21 and the second substrate 31, and used as a signal input/output interface, a power interface, and the like.
Further, the present embodiment further includes a cover plate (not shown in the drawings), and the cover plate and the housing 1 are covered to define the accommodating cavity 10. Specifically, the cover plate and the housing 1 form the accommodating cavity 10 through an airtight packaging technology, so that moisture can be effectively prevented from entering in the packaging process, a good packaging effect can be obtained, and the reliability of the product can be improved.
More preferably, the laser 22 in this embodiment is a DFB laser, which is also called a distributed feedback laser, and belongs to a side-emitting semiconductor laser, and has good selectivity to wavelength and good wavelength stability.
The utility model discloses a working process does: the laser and the backlight detection chip are firstly attached to a first substrate to form a light emitting assembly, then the detector and the trans-impedance amplifier are attached to a second substrate to form a light receiving assembly, then the pre-assembled light emitting assembly, the pre-assembled light receiving assembly and the wavelength division multiplexer are directly attached to the inside of a shell, then the shell is hermetically packaged, and finally the packaged shell and an adapter are coupled and welded to form a single-fiber bidirectional optical device.
To sum up, the embodiment of the utility model provides a two-way optical device of single fiber can reduce the coupling number of times of the inside chip of casing and components and parts effectively, does not need during the equipment to paste the small chip of dress volume and components and parts respectively again to improve the production efficiency of product.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.
Claims (10)
1. A single-fiber bidirectional optical device is characterized in that: including casing, optical transmission module, light receiving component, wavelength division multiplexer and adapter, the casing has the holding chamber, optical transmission module light receiving component reaches wavelength division multiplexer all locates the holding intracavity, optical transmission module with light receiving component locates the left and right sides in the holding intracavity, optical transmission module include first base plate and install in laser on the first base plate, light receiving component include the second base plate and install in detector on the second base plate, first base plate reaches the second base plate all with the casing links to each other, wavelength division multiplexer is located optical transmission module with between the light receiving component, the adapter install in the outside of casing, just the light path direction of adapter aligns wavelength division multiplexer.
2. The single-fiber bidirectional optical device according to claim 1, characterized in that: the first substrate comprises a first plate body and a second plate body, the first plate body and the second plate body are connected with each other at an included angle, the light emitting assembly comprises a backlight detection chip, the laser is installed on the first plate body, the backlight detection chip is installed on the second plate body, and the laser is electrically connected with the backlight detection chip.
3. The single-fiber bidirectional optical device according to claim 2, characterized in that: the light emitting assembly comprises at least two groups of lasers and backlight detection chips, and the at least two groups of lasers and the backlight detection chips are arranged along the front-back direction of the first substrate.
4. The single-fiber bidirectional optical device according to claim 1, characterized in that: the light receiving assembly includes at least two detectors, and the at least two detectors are arranged along a front-rear direction of the second substrate.
5. The single-fiber bidirectional optical device according to claim 4, wherein: the light receiving component further comprises at least two transimpedance amplifiers, the transimpedance amplifiers and the detectors are arranged in pairs, and the detectors are electrically connected with the transimpedance amplifiers.
6. The single-fiber bidirectional optical device according to claim 1, characterized in that: still include the adjustable ring, the adjustable ring install in the casing with between the adapter, just the adjustable ring cover is located the periphery of adapter.
7. The single-fiber bidirectional optical device according to claim 1, characterized in that: the pin is arranged on the left side and the right side of the shell and electrically connected with the first substrate and the second substrate.
8. The single-fiber bidirectional optical device according to claim 1, characterized in that: the cover plate and the shell are covered to define the accommodating cavity.
9. The single-fiber bidirectional optical device according to claim 8, wherein: the cover plate and the shell form the accommodating cavity through airtight packaging.
10. The single fiber bidirectional optical device according to claim 1, characterized in that: the laser is a DFB laser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221948763.5U CN217879740U (en) | 2022-07-26 | 2022-07-26 | Single-fiber bidirectional optical device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221948763.5U CN217879740U (en) | 2022-07-26 | 2022-07-26 | Single-fiber bidirectional optical device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217879740U true CN217879740U (en) | 2022-11-22 |
Family
ID=84055093
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221948763.5U Active CN217879740U (en) | 2022-07-26 | 2022-07-26 | Single-fiber bidirectional optical device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217879740U (en) |
-
2022
- 2022-07-26 CN CN202221948763.5U patent/CN217879740U/en active Active
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