CN205038374U - Subassembly is received and dispatched to single fiber light - Google Patents
Subassembly is received and dispatched to single fiber light Download PDFInfo
- Publication number
- CN205038374U CN205038374U CN201520556417.6U CN201520556417U CN205038374U CN 205038374 U CN205038374 U CN 205038374U CN 201520556417 U CN201520556417 U CN 201520556417U CN 205038374 U CN205038374 U CN 205038374U
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- laser
- filter plate
- light
- generating device
- fiber
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Abstract
The utility model provides a subassembly is received and dispatched to single fiber light, includes: laser generation means, the filter plate sets up laser generation means's play plain noodles makes the light process that laser generation means sent the filter plate, the fiber connector is located the light path that laser generation means sent for it makes the process to connect optic fibre the light process of filter plate the fiber connector gets into optic fibre, laser detector sets up one side of filter plate for receive the light signal that returns from optic fibre, still include optical isolator, set up in the laser emission device with between the filter plate, and lie in in the light path of the light that laser generation means sent, so above -mentioned structure is owing to be equipped with optical isolator between laser generation means and filter plate, can effectually avoid because of in the light reflex returns laser generation means, and do not have get into optic fibre completely in, lead to the interference that causes to send and receive signals.
Description
Technical field
The utility model relates to optical communication technology field, particularly relates to single-fiber optical transmitting-receiving subassembly.
Background technology
The effect of single-fiber optical transmitting-receiving subassembly is used to the conversion realizing light signal and electric signal, and by realizing the transmission of light signal with being coupled of optical fiber, it is as the core work parts in optical fiber telecommunications system, and its performance directly determines the transmission quality of optical fiber communication.
In intelligent acess network, local end and user side will widely apply single-fiber optical transmitting-receiving subassembly, because upward signal or downgoing signal are through shunt or wavelength division multiplexer, signal is by large high attenuation, this just requires that the sensitivity of laser detector will improve greatly, but single-fiber bidirectional device is the integrated device of transmitting-receiving unification, crosstalk will be produced between receiving and transmitting signal, this crosstalk will affect the sensitivity of device, especially, after the whole wave plate after filtration of light meeting that generating device of laser sends in theory, enter in optical fiber, but in fact generating device of laser has part light without filter plate but is reflected back generating device of laser through filter plate, so just, unnecessary interference can be caused to receiving and transmitting signal.
Utility model content
Based on this, be necessary the problem causing receiving and transmitting signal to disturb for the above-mentioned situation through filter plate reflect back into laser, a kind of novel single-fiber optical transmitting-receiving subassembly is provided.
A kind of single-fiber optical transmitting-receiving subassembly, comprising: generating device of laser; Filter plate, is arranged on the exiting surface of described generating device of laser, and the light that described generating device of laser is sent is through described filter plate; Fiber connector, is positioned in light path that generating device of laser sends, makes to enter optical fiber through the light of described filter plate through described fiber connector for connecting fiber; Laser detector, is arranged on the side of described filter plate, for receiving the light signal returned from optical fiber, also comprises optoisolator, is arranged between described generating device of laser and described filter plate, and is arranged in the light path of the light that described generating device of laser sends.
Such said structure, owing to being provided with optoisolator between generating device of laser and filter plate, effectively can being avoided because light is reflected back in generating device of laser, and not enter completely in optical fiber, cause the interference caused to receiving and transmitting signal.
Wherein in an embodiment, the incidence surface of described optoisolator is perpendicular to the optical axis direction of described generating device of laser.
Wherein in an embodiment, the optical axis of described generating device of laser is through dot center's point of the incidence surface of described optoisolator.
Wherein in an embodiment, described filter plate tilts 45 ° to place relative to the optical axis direction of described generating device of laser.
Wherein in an embodiment, the incidence surface of described laser detector is parallel to the optical axis of the light that described generating device of laser is launched.
Wherein in an embodiment, also comprise diaphragm, be arranged between described laser detector and described filter plate.
Accompanying drawing explanation
Fig. 1 is the single-fiber optical transmitting-receiving subassembly structural representation in the utility model one preferred embodiment.
Embodiment
Consult Fig. 1, Fig. 1 is the structural representation of the present embodiment, a kind of single-fiber optical transmitting-receiving subassembly 100, comprise: generating device of laser 110, filter plate 120 is arranged on the exiting surface of generating device of laser 110, and in the light path of the light sent at generating device of laser 110, filter plate 120 has Unidirectional transparent, the light that generating device of laser 110 penetrates penetrates from the right side (exiting surface) of filter plate after can inject filter plate 120 from the left side of filter plate 120 (incidence surface), the light that generating device of laser 110 sends enters fiber connector 130 through described filter plate 120, fiber connector 130 is for connecting fiber, the light through described filter plate 120 is made to enter optical fiber through described fiber connector 130, laser detector 140, be arranged on described filter plate 120 side, and laser detector is arranged in the light path of the light reflected through filter plate 120 for receiving the light signal returned from optical fiber, particularly, the light injected on the right side of filter plate 120 through filter plate 120, thus can not enter laser detector 140 after filter plate 120 reflects.More particularly, filter plate 120 tilts 45 ° to place relative to the optical axis direction of described generating device of laser 110, the incidence surface of laser detector 140 is parallel to the optical axis of the light that described generating device of laser is launched, and the light signal returned from optical fiber is entered in laser detector 140 perpendicular to the incidence surface of laser detector 140 after filter plate 120.
Wherein, optoisolator 150 is arranged between described generating device of laser 110 and described filter plate 120, and be arranged in the light path of the light that described generating device of laser 110 sends, preferably, the optical axis of generating device of laser 110 is through dot center's point of the incidence surface of described optoisolator 150.Due to the optical device that optoisolator 150 is also Unidirectional transparent, the light that generating device of laser 110 penetrates can penetrate from right side after left side incident light isolator 150, and light can not be injected in filter plate 120 in right side, even if there is part light not inject in filter plate 120 like this, owing to there being the existence of optoisolator 150, light can not be injected from the right side of optoisolator 150, filter plate 120 can be again entered through the reflection of optoisolator 150 right flank, so just, light can be avoided to be reflected back in generating device of laser, and do not enter completely in optical fiber, cause the interference caused to receiving and transmitting signal.
In order to further avoid receiving and transmitting signal to the interference of laser detector 140, a diaphragm 160 is set between the incidence surface and filter plate 120 of laser detector 140, to prevent some parasitic lights to the interference of laser detector 140.
Above-mentioned generating device of laser 110, filter plate 120, fiber connector 130, laser detector 140, optoisolator 150, diaphragm 160 are all fixed in housing 170, housing 1 is on the whole by formed in mould unitary plastics part, this working of plastics can select PEI (polyetherimide Polyetherimide) material, above-mentioned generating device of laser 110, filter plate 120, fiber connector 130, laser detector 140, optoisolator 150, diaphragm 160 are all fixed in housing 170, and adopt adhering process to be assembled into one.
Each technical characteristic of the above embodiment can combine arbitrarily, for making description succinct, the all possible combination of each technical characteristic in above-described embodiment is not all described, but, as long as the combination of these technical characteristics does not exist contradiction, be all considered to be the scope that this instructions is recorded.
The above embodiment only have expressed several embodiment of the present utility model, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to utility model patent scope.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be as the criterion with claims.
Claims (6)
1. a single-fiber optical transmitting-receiving subassembly, comprising:
Generating device of laser;
Filter plate, is arranged on the exiting surface of described generating device of laser, and the light that described generating device of laser is sent is through described filter plate;
Fiber connector, is positioned in light path that generating device of laser sends, makes to enter optical fiber through the light of described filter plate through described fiber connector for connecting fiber;
Laser detector, is arranged on the side of described filter plate, for receiving the light signal returned from optical fiber, it is characterized in that, also comprise optoisolator, be arranged between described generating device of laser and described filter plate, and be arranged in the light path of the light that described generating device of laser sends.
2. single-fiber optical transmitting-receiving subassembly according to claim 1, is characterized in that, the incidence surface of described optoisolator is perpendicular to the optical axis direction of described generating device of laser.
3. single-fiber optical transmitting-receiving subassembly according to claim 2, is characterized in that, the optical axis of described generating device of laser is through the central point of the incidence surface of described optoisolator.
4. single-fiber optical transmitting-receiving subassembly according to claim 1, is characterized in that, described filter plate tilts 45 ° to place relative to the optical axis direction of described generating device of laser.
5. single-fiber optical transmitting-receiving subassembly according to claim 1, is characterized in that, the incidence surface of described laser detector is parallel to the optical axis of the light that described generating device of laser is launched.
6. single-fiber optical transmitting-receiving subassembly according to claim 1, is characterized in that, also comprise diaphragm, is arranged between described laser detector and described filter plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520556417.6U CN205038374U (en) | 2015-07-28 | 2015-07-28 | Subassembly is received and dispatched to single fiber light |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520556417.6U CN205038374U (en) | 2015-07-28 | 2015-07-28 | Subassembly is received and dispatched to single fiber light |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205038374U true CN205038374U (en) | 2016-02-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520556417.6U Expired - Fee Related CN205038374U (en) | 2015-07-28 | 2015-07-28 | Subassembly is received and dispatched to single fiber light |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205038374U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114236705A (en) * | 2021-11-04 | 2022-03-25 | 江苏爱得科光子技术有限公司 | Assembled wavelength division multiplexing light-receiving and light-emitting integrated single-fiber bidirectional device |
| CN114236702A (en) * | 2021-11-02 | 2022-03-25 | 江苏爱得科光子技术有限公司 | Wavelength division multiplexing light receiving and transmitting integrated single-fiber bidirectional device |
| CN114236704A (en) * | 2021-11-04 | 2022-03-25 | 江苏爱得科光子技术有限公司 | High-heat-dissipation wavelength division multiplexing light receiving and transmitting integrated single-fiber bidirectional device |
| CN114236703A (en) * | 2021-11-04 | 2022-03-25 | 江苏爱得科光子技术有限公司 | Light receiving and transmitting integrated single-fiber bidirectional device capable of effectively reducing internal crosstalk |
-
2015
- 2015-07-28 CN CN201520556417.6U patent/CN205038374U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114236702A (en) * | 2021-11-02 | 2022-03-25 | 江苏爱得科光子技术有限公司 | Wavelength division multiplexing light receiving and transmitting integrated single-fiber bidirectional device |
| CN114236705A (en) * | 2021-11-04 | 2022-03-25 | 江苏爱得科光子技术有限公司 | Assembled wavelength division multiplexing light-receiving and light-emitting integrated single-fiber bidirectional device |
| CN114236704A (en) * | 2021-11-04 | 2022-03-25 | 江苏爱得科光子技术有限公司 | High-heat-dissipation wavelength division multiplexing light receiving and transmitting integrated single-fiber bidirectional device |
| CN114236703A (en) * | 2021-11-04 | 2022-03-25 | 江苏爱得科光子技术有限公司 | Light receiving and transmitting integrated single-fiber bidirectional device capable of effectively reducing internal crosstalk |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160217 Termination date: 20170728 |