CN205374827U - Optical transmission module - Google Patents
Optical transmission module Download PDFInfo
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- CN205374827U CN205374827U CN201620134474.XU CN201620134474U CN205374827U CN 205374827 U CN205374827 U CN 205374827U CN 201620134474 U CN201620134474 U CN 201620134474U CN 205374827 U CN205374827 U CN 205374827U
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- monitoring detector
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- laser instrument
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Abstract
The utility model provides an optical transmission module, it includes the module body, be equipped with laser instrument driver chip, laser instrument chip and control detector on the module body, control detector and laser instrument chip are all established in the place ahead of laser instrument driver chip's front end, and the rear end of laser instrument chip is towards laser instrument driver chip, be equipped with a speculum between the rear end of laser instrument chip and the control detector for the light reflex of sending laser instrument chip rear end is to the receipt face of control detector. Adopt above -mentioned structure, size that can the minimize module to the function of monitoring the detector is remain, laser instrument chip to distance between the laser instrument driver chip can also be shortened as far as possible.
Description
Technical field
This utility model relates to technical field of optical fiber communication, is especially a kind of light emission module.
Background technology
In high speed optoelectronic transmission system, the light emission module in optical signal transceiver is most important, especially for the high-speed laser of more than 25G.In this light emission module, the length of the connecting line between chip of laser (LDChip) and laser driving chip (LDD) can have a strong impact on the quality of signal transmission, therefore, distance between chip of laser and laser driving chip is more short, and the quality of signal transmission is more good.In order to monitor laser detector whether normal operation, in chip of laser, the front end of chip of laser is used for sending laser, the rear end of chip of laser can spill a small amount of light, and the rear end of chip of laser can arrange a monitoring detector (MPD), sense the light that chip of laser rear end sends, such that it is able to laser instrument is monitored.
In prior art, in order to enable monitoring detector to sense the light that chip of laser rear end sends, monitoring detector is placed on the dead astern of chip of laser, in order to avoid the luminous reflectance received is returned in chip of laser by the light receiving surface of monitoring detector, adopt monitoring detector receiving plane angled with the optical axis that chip of laser is launched.Due to high-speed laser, chip of laser and laser driving chip is needed to be integrated in one piece of module, therefore, for reducing the distance as far as possible, it is accomplished by laser driving chip to be put into the side of chip of laser, so, the width allowing for whole module becomes big, so that the becoming large-sized of whole optical signal transceiver.
Utility model content
The technical problems to be solved in the utility model is, overcome the defect of prior art, a kind of size that can as far as possible reduce module is provided, and retains the function of monitoring detector, additionally it is possible to shorten the chip of laser light emission module to the spacing of laser driving chip as far as possible.
For solving above-mentioned technical problem, this utility model provides a kind of light emission module, it includes module body, described module body is provided with laser driving chip, chip of laser and monitoring detector, described monitoring detector and chip of laser are each provided at the front of the front end of laser driving chip, the rear end of chip of laser is towards laser driving chip, it is provided with a reflecting mirror, for the receiving plane of the luminous reflectance that sent chip of laser rear end to monitoring detector between rear end and the monitoring detector of described chip of laser.
After adopting said structure, a small amount of light that chip of laser rear end sends can be irradiated on the receiving plane of monitoring detector by the reflection of reflecting mirror, thus monitoring detector can the work of monitoring laser chip, and, monitoring detector and chip of laser all can be arranged on the front of the front end of laser driving chip, it is not arranged in the side of laser driving chip, therefore the width of module body can be greatly reduced, and owing to monitoring detector is not required to be arranged on the rear of the rear end of chip of laser, one piece of reflecting mirror is only had between chip of laser and laser driving chip, therefore, chip of laser can accomplish that the distance between laser driving chip is very short.
The angle of the light that the rear end of described chip of laser sends angle of incidence on the mirror is 20～60 degree.This angular range is adopted to enable to the position of reflecting mirror, chip of laser and this three of monitoring detector, can either ensure that the light that chip of laser rear end sends reflexes on the receiving plane of monitoring detector by reflecting mirror, make again the close together between this three so that the space occupying module body is less.
The angle of the light that the rear end of described chip of laser sends angle of incidence on the mirror is 30～45 degree.Adopt this angular range more suitable.
Described monitoring detector is obliquely installed so that the light inciding on the receiving plane of monitoring detector from reflecting mirror and reflect away is radiated at the side of chip of laser.Adopt this structure, it is possible to the light that the receiving plane of monitoring detector is launched will not be entered in chip of laser, namely chip of laser will not be interfered.
Accompanying drawing explanation
Fig. 1 is the location arrangements schematic diagram of the light emission module of prior art；
Fig. 2 is the location arrangements schematic diagram of light emission module in this utility model.
As shown in the figure: 1, module body, 2, laser driving chip, 3, chip of laser, 4, monitoring detector, 5, reflecting mirror, 6, lens, 7, isolating device, 8, optical fiber.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described in more detail:
Fig. 1 is the structural representation of the light emission module of prior art, as shown in the figure: module body 1 is provided with monitoring detector 4, chip of laser 3 and laser driving chip 2, monitoring detector 4 is placed on the dead astern of chip of laser 3, in order to avoid the luminous reflectance received is returned in chip of laser 3 by the light receiving surface of monitoring detector 4, adopt monitoring detector 4 receiving plane angled with the optical axis that chip of laser 3 is launched.So that the close together between chip of laser 3 and laser driving chip 2, chip of laser 3 and monitoring detector 4 are arranged on the side of laser driving chip 2 so that chip of laser 3 is near laser driving chip 2.Adopting in this way, the space in module body that total occupies is relatively big, certainly will add the width of module body so that the volume of whole module is bigger.
Fig. 2 is the structural representation of this utility model light emission module, as shown in the figure: this utility model provides a kind of light emission module, it includes module body 1, described module body 1 is provided with laser driving chip 2, chip of laser 3 and monitoring detector 4, described monitoring detector 4 and chip of laser 3 are each provided at the front of the front end of laser driving chip 2, the rear end of chip of laser 3 is towards laser driving chip 2, it is provided with a reflecting mirror 5 between rear end and the monitoring detector 4 of described chip of laser 3, receiving plane for luminous reflectance that chip of laser 3 rear end is sent to monitoring detector 4.Wherein, one end that laser driving chip 2 is used for and chip of laser 3 connects is the front end of laser driving chip 2.
The front end emission laser of chip of laser 3, enters in optical fiber after lens 6 and isolating device 7.Laser driving chip 2 drives chip of laser 3 to launch laser, for monitoring laser chip 3, when the front end emission laser of chip of laser 3, the rear end of chip of laser 3 also can send a small amount of light out, monitored detector 4 is detected, such that it is able to the work of monitoring laser chip 3.
After adopting said structure, a small amount of light that chip of laser rear end sends can be irradiated on the receiving plane of monitoring detector by the reflection of reflecting mirror, thus monitoring detector can the work of monitoring laser chip, and, monitoring detector and chip of laser all can be arranged on the front of the front end of laser driving chip, it is not arranged in the side of laser driving chip, therefore the width of module body can be greatly reduced, and owing to monitoring detector is not required to be arranged on the rear of the rear end of chip of laser, one piece of reflecting mirror is only had between chip of laser and laser driving chip, therefore, chip of laser can accomplish that the distance between laser driving chip is very short.
The angle of the light that the rear end of described chip of laser 3 sends angle of incidence a on reflecting mirror 5 is 20～60 degree.This angular range is adopted to enable to the position of reflecting mirror, chip of laser and this three of monitoring detector, can either ensure that the light that chip of laser rear end sends reflexes on the receiving plane of monitoring detector by reflecting mirror, make again the close together between this three so that the space occupying module body is less.
The angle of the light that the rear end of described chip of laser 3 sends angle of incidence a on the mirror is 30～45 degree.Adopt this angular range more suitable.
Described monitoring detector 4 is obliquely installed on the receiving plane so that inciding monitoring detector 4 from reflecting mirror 5 and the light reflected away is radiated at the side of chip of laser 3.Adopt this structure, it is possible to the light that the receiving plane of monitoring detector is launched will not be entered in chip of laser, namely chip of laser will not be interfered.Monitoring detector 4 is obliquely installed and refers to, between monitoring detector 4 and reflecting mirror 5 at an angle, make to be reflected light that mirror reflexes on the receiving plane of monitoring detector 4 and be irradiated to the side of chip of laser 3 through the light that the receiving plane of monitoring detector 4 reflects away again, without reflexing in chip of laser 3.
Claims (4)
1. a light emission module, it includes module body, described module body is provided with laser driving chip, chip of laser and monitoring detector, it is characterized in that: described monitoring detector and chip of laser are each provided at the front of the front end of laser driving chip, the rear end of chip of laser is towards laser driving chip, it is provided with a reflecting mirror, for the receiving plane of the luminous reflectance that sent chip of laser rear end to monitoring detector between rear end and the monitoring detector of described chip of laser.
2. light emission module according to claim 1, it is characterised in that: the angle of the light that the rear end of described chip of laser sends angle of incidence on the mirror is 20～60 degree.
3. light emission module according to claim 2, it is characterised in that: the angle of the light that the rear end of described chip of laser sends angle of incidence on the mirror is 30～45 degree.
4. light emission module according to claim 1, it is characterised in that: described monitoring detector is obliquely installed so that the light inciding on the receiving plane of monitoring detector from reflecting mirror and reflect away is radiated at the side of chip of laser.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520640929 | 2015-08-24 | ||
| CN2015206409290 | 2015-08-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205374827U true CN205374827U (en) | 2016-07-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620134474.XU Active CN205374827U (en) | 2015-08-24 | 2016-02-23 | Optical transmission module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205374827U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020035074A1 (en) * | 2018-08-17 | 2020-02-20 | 青岛海信宽带多媒体技术有限公司 | Optical module |
-
2016
- 2016-02-23 CN CN201620134474.XU patent/CN205374827U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020035074A1 (en) * | 2018-08-17 | 2020-02-20 | 青岛海信宽带多媒体技术有限公司 | Optical module |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |