CN110266379B - Backlight monitoring optical assembly - Google Patents
Backlight monitoring optical assembly Download PDFInfo
- Publication number
- CN110266379B CN110266379B CN201910600811.8A CN201910600811A CN110266379B CN 110266379 B CN110266379 B CN 110266379B CN 201910600811 A CN201910600811 A CN 201910600811A CN 110266379 B CN110266379 B CN 110266379B
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- backlight
- detector
- laser
- shaped groove
- mirror
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 25
- 230000003287 optical effect Effects 0.000 title claims description 14
- 239000003292 glue Substances 0.000 claims 1
- 238000002310 reflectometry Methods 0.000 abstract description 3
- 239000013307 optical fiber Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012806 monitoring device Methods 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 241000282414 Homo sapiens Species 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 238000013473 artificial intelligence Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005496 eutectics Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000001579 optical reflectometry Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
- H04B10/079—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
- H04B10/0795—Performance monitoring; Measurement of transmission parameters
- H04B10/07955—Monitoring or measuring power
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
- H04B10/079—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
- H04B10/0799—Monitoring line transmitter or line receiver equipment
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Optical Couplings Of Light Guides (AREA)
Abstract
The invention provides a backlight monitoring light component, which comprises a laser, a detector and a reflecting mirror, wherein a first inclined mirror surface and a second inclined mirror surface which form an included angle with each other to form a V-shaped groove are arranged on the reflecting mirror, the detector can move back and forth along a guide groove formed in the top surface of the reflecting mirror, the included angle between the first inclined mirror surface and a photosensitive surface is not equal to the included angle between the first inclined mirror surface and a backlight emitting surface, and the included angle between the second inclined mirror surface and the photosensitive surface is not equal to the included angle between the second inclined mirror surface and the backlight emitting surface. Thus, the V-shaped groove on the reflecting mirror can reflect the backlight with large divergence angle to the photosensitive surface of the detector, namely the backlight receiving efficiency of the detector is high; the detector can move along the guide groove, so that the sizes of backlight received by the photosensitive surfaces of the detector are different, and the detector can be applicable to lasers with different backlight sizes; the backlight reflected by the V-grooves and then incident on the photosensitive surface of the detector is not perpendicular to the photosensitive surface, so that the light beam reflected from the detector back to the laser is reduced, i.e. the backlight reflectivity is low.
Description
Technical Field
The present invention relates to the field of optical assemblies, and in particular, to a backlight monitoring optical assembly.
Background
In an optical fiber communication system, the luminous efficiency of an optical fiber laser serving as a light source is obviously affected by temperature, in order to ensure the stability of the optical fiber communication system, a device for monitoring the luminous power of the optical fiber laser is generally added in an optical fiber laser package, and then a control system compensates the problem of power reduction or increase of the optical fiber laser under different temperature conditions by identifying the current of the monitoring device, so that the consistency of the performance of the optical fiber system in different working environments is ensured. Such a monitoring device is called a backlight monitoring light assembly comprising a detector for receiving the backlight emitted by the laser.
With the high-speed development of the Internet, big data, artificial intelligence and high-definition televisions, the requirements on the transmission rate of an optical fiber network are higher and higher, and various methods are used by human beings to improve the transmission rate of the optical fiber network, and with the improvement of the transmission rate, the requirements on the performance and the process of an optical device chip are higher and higher, for example, an optical device with low speed is basically packaged coaxially, and a laser and a detector are vertical patches, so that backlight emitted by the laser can conveniently and efficiently enter a photosensitive surface of the detector. However, for high-speed devices, the conventional vertical patch approach has failed to meet the requirements of the laser because backlight that is normally incident to the photosensitive surface of the detector is reflected back to the laser, whereas high-speed devices require low back light reflectivity, which increases as the rate of the laser increases.
The existing backlight monitoring light component of the detector is flatly attached below the backlight emitted by the laser, and the backlight monitoring light component can reduce backlight reflected back to the laser, but only a small part of backlight energy is received by the detector under the condition that the backlight divergence angle of the laser is large, so that the backlight requirement of the laser is very large, and the manufacturing difficulty of the laser is increased. In the above backlight monitoring light assembly, if the detector can receive the backlight emitted by a certain laser, the backlight emitted by other lasers with different backlight sizes may not be received by the detector, i.e. different lasers cannot be applied.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a backlight monitoring optical component which has low backlight reflectivity and high backlight receiving efficiency of a detector and is applicable to a backlight without a laser.
In order to solve the technical problems, the invention provides a backlight monitoring light assembly, which comprises a laser and a detector, and further comprises a reflecting mirror, wherein a first inclined mirror surface and a second inclined mirror surface are arranged on the reflecting mirror, the first inclined mirror surface and the second inclined mirror surface form an included angle with each other to form a V-shaped groove, the bottom of the middle part of the V-shaped groove is inclined, a guide groove for installing the detector is formed in the top surface of the reflecting mirror, the detector can move back and forth along the guide groove, backlight emitted by the laser is reflected by the V-shaped groove and then enters a photosensitive surface of the detector, the included angle between the first inclined mirror surface and the photosensitive surface of the detector is not equal to the included angle between the first inclined mirror surface and the backlight emitting surface of the laser, and the included angle between the second inclined mirror surface and the photosensitive surface of the detector is not equal to the included angle between the second inclined mirror surface and the backlight emitting surface of the laser.
Preferably, the implementation structure of the inclined bottom of the middle groove of the V-shaped groove is specifically as follows: one end of the bottom of the middle groove of the V-shaped groove is arranged at the bottom of the guide groove on the top surface of the reflecting mirror, and the other end of the V-shaped groove is arranged at the side surface of the reflecting mirror facing the laser and is lower than one end of the bottom of the guide groove on the top surface of the reflecting mirror.
Preferably, a condensing lens is included, which is mounted on the V-groove.
Preferably, the implementation structure of the photosensitive surface of the detector after the backlight emitted by the laser is reflected by the V-shaped groove is as follows: the backlight emitting surface of the laser faces the V-shaped groove through the condensing lens, and the photosensitive surface of the detector faces the V-shaped groove.
Preferably, the backlight emitting surface of the laser is close to the side surface of the reflecting mirror and faces the V-shaped groove, and the photosensitive surface of the detector faces downwards and faces the V-shaped groove.
Preferably, the laser is mounted on the spacer, and the reflector is mounted on the spacer at a position opposite to the emitting surface of the laser backlight.
Preferably, the condensing lens is adhered to the V-groove by optical adhesive.
Preferably, the angle between the first and second tilting mirrors is less than 90 °.
The invention has the following beneficial effects: because the two inclined mirror surfaces of the V-shaped groove of the reflecting mirror form an included angle with each other, the V-shaped groove has a light condensing effect, so that even if the backlight divergence angle of the laser is relatively large, the emitted backlight is emitted to the reflecting mirror in a divergent mode, the two inclined mirror surfaces of the V-shaped groove on the reflecting mirror can also converge and reflect the backlight to the photosensitive surface of the detector, namely the backlight receiving efficiency of the detector is high; because the detector can move along the guide groove, a user can change the distance between the photosensitive surface of the detector and the reflecting position of the V-shaped groove, so that the sizes of backlights received by the photosensitive surface of the detector are different, and the backlight monitoring optical component can be suitable for lasers with different sizes of backlights; in addition, because the included angle between the first inclined mirror surface and the photosensitive surface of the detector is not equal to the included angle between the first inclined mirror surface and the backlight emitting surface of the laser, the included angle between the second inclined mirror surface and the photosensitive surface of the detector is not equal to the included angle between the second inclined mirror surface and the backlight emitting surface of the laser, and thus the backlight which is reflected by the V-shaped groove and then enters the photosensitive surface of the detector is not perpendicular to the photosensitive surface, the backlight which is reflected from the detector back to the laser is reduced, namely the backlight reflectivity is low, so that the requirement of a high-speed laser is met.
Drawings
FIG. 1 is a schematic diagram of a backlight monitoring light assembly;
FIG. 2 is a schematic diagram of the backlight monitoring light assembly with the detector and condenser lens removed;
FIG. 3 is a front perspective view of a backlight monitoring light assembly;
fig. 4 is a side view of the backlight monitoring light assembly of fig. 2.
Reference numerals illustrate: 1-a laser; 2-a detector; a 3-mirror; 4-a gasket; 5-a condensing lens; 6-a first tilting mirror; 7-a second tilting mirror; the bottom of the middle part of the 8-V-shaped groove; 9-a guide groove.
Detailed Description
Exemplary embodiments of the present application will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present application are shown in the drawings, it should be understood that the present application may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the application to those skilled in the art.
As shown in fig. 1, the backlight monitoring optical component comprises a laser 1, a detector 2, a reflecting mirror 3, a gasket 4 and a condensing lens 5, wherein the laser 1 is attached to the gasket 4 through a eutectic process, the reflecting mirror 3 is fixedly crystallized on the gasket 4 through silver colloid, and the reflecting mirror 3 is specifically fixedly crystallized on a position opposite to a backlight emitting surface of the laser 1.
As shown in fig. 2, the reflecting mirror 3 is provided with a first tilting mirror 6 and a second tilting mirror 7, the first tilting mirror 6 and the second tilting mirror 7 form an included angle smaller than 90 ° with each other to form a V-shaped groove with a light condensing effect, the top surface of the reflecting mirror 3 is provided with a guide groove 9 for installing the detector 2, one end of the middle groove bottom 8 of the V-shaped groove is provided at the groove bottom of the guide groove 9, and the other end is provided at the side surface of the reflecting mirror 3 facing the laser 1, so that the middle groove bottom 8 of the V-shaped groove is inclined as shown in fig. 3.
The condensing lens 5 is a spherical lens, has a condensing effect, and is adhered to the V-shaped groove of the reflecting mirror 3 by colorless transparent optical adhesive, and the optical adhesive keeps the light transmittance between the condensing lens 5 and the V-shaped groove of the reflecting mirror 3 to be more than 90%. The detector 2 is mounted with its photosensitive surface facing downwards on the guide slot 9 of the mirror 3 such that the photosensitive surface of the detector 2 faces the V-shaped slot, and the detector 2 can be moved back and forth along the guide slot 9 on the guide slot 9, thereby changing the position of the detector 2 and its photosensitive surface.
As shown in fig. 4, the back light emitting surface of the laser 1 faces the V-shaped groove of the reflecting mirror 3, so that after the laser 1 shown in fig. 1 emits the scattered back light, the scattered back light passes through the condensing lens 5, the condensing lens 5 converges the scattered back light, the converged back light is re-emitted to the V-shaped groove of the reflecting mirror 3, and the V-shaped groove reflects the back light respectively emitted to the first inclined mirror 6 and the second inclined mirror 7 to the photosensitive surface of the detector 2, and the back light is further converged in the reflecting process. The user can move the detector 2 back and forth along the guide groove 9 to change the position of the photosensitive surface, so as to change the distance between the reflecting position on the V-shaped groove and the photosensitive surface of the detector 2, and make the sizes of the backlights received by the photosensitive surface of the detector 2 different, so that the backlight monitoring light assembly of the embodiment can be suitable for lasers 1 with different sizes of backlights. Specifically, if the backlight emitted by the laser is larger, the user can move the detector 2 away from the condensing lens 5 along the guide groove 9, so that the backlight received by the photosensitive surface of the detector 2 becomes smaller; if the backlight emitted by the laser 1 is small, the user can move the detector 2 along the guide groove 9 to approach the condensing lens 5, so that the backlight received by the photosensitive surface of the detector 2 becomes large.
In this embodiment, since the V-shaped groove of the reflecting mirror 3 and the condensing lens 5 both have a condensing effect, even if the divergence angle of the backlight of the laser 1 is very large, the backlight is emitted in a dispersed and divergent shape, and the two inclined mirror surfaces 6 and 7 of the V-shaped groove on the condensing lens 5 and the reflecting mirror 3 can reflect the backlight into the photosensitive surface of the detector 2, that is, the backlight receiving efficiency of the detector 2 is high, so that the backlight monitoring light assembly of this embodiment can also be used normally.
In this embodiment, the inclination angle of the two inclined mirrors 6 and 7 of the V-shaped groove on the reflecting mirror 3 may be set to make the included angle between the first inclined mirror 6 and the photosensitive surface of the detector 2 unequal to the included angle between the first inclined mirror 6 and the backlight emitting surface of the laser 1, and the included angle between the second inclined mirror 7 and the photosensitive surface of the detector 2 unequal to the included angle between the second inclined mirror 7 and the backlight emitting surface of the laser 1, so that the backlight incident to the photosensitive surface of the detector 2 after being reflected by the V-shaped groove is not perpendicular to the photosensitive surface, thereby reducing the backlight reflected from the detector 2 back to the laser 1 to meet the requirement of the high-speed laser.
Finally, it should be noted that the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the scope of the present application, and although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made to the technical solution of the present application without departing from the spirit and scope of the technical solution of the present application.
Claims (6)
1. A backlight monitoring optical component comprises a laser and a detector, and is characterized in that: the laser comprises a laser device, and is characterized by further comprising a reflector, wherein a first inclined mirror surface and a second inclined mirror surface are arranged on the reflector, the first inclined mirror surface and the second inclined mirror surface form an included angle with each other to form a V-shaped groove, the bottom of the middle part of the V-shaped groove is inclined, a guide groove for installing a detector is formed in the top surface of the reflector, the detector can move back and forth along the guide groove, backlight emitted by the laser device is reflected by the V-shaped groove and then is injected into a photosensitive surface of the detector, the included angle between the first inclined mirror surface and the photosensitive surface of the detector is not equal to the included angle between the first inclined mirror surface and the backlight emitting surface of the laser device, and the included angle between the second inclined mirror surface and the photosensitive surface of the detector is not equal to the included angle between the second inclined mirror surface and the backlight emitting surface of the laser device;
One end of the bottom of the middle part of the V-shaped groove is arranged at the bottom of the guide groove on the top surface of the reflecting mirror, and the other end of the V-shaped groove is arranged at the side surface of the reflecting mirror facing the laser and is lower than one end of the bottom of the guide groove on the top surface of the reflecting mirror;
the angle between the first tilt mirror and the second tilt mirror is less than 90 °.
2. The backlight monitoring light assembly of claim 1, wherein: the lens comprises a condensing lens, and the condensing lens is arranged on the V-shaped groove.
3. The backlight monitoring light assembly according to claim 2, wherein the implementation structure of the light-sensitive surface of the detector after the backlight emitted by the laser is reflected by the V-shaped groove is specifically as follows: the backlight emitting surface of the laser faces the V-shaped groove through the condensing lens, and the photosensitive surface of the detector faces the V-shaped groove.
4. A backlight monitoring light assembly according to claim 3, characterized in that: the backlight emitting surface of the laser is close to the side surface of the reflecting mirror and faces the V-shaped groove, and the photosensitive surface of the detector faces downwards and faces the V-shaped groove.
5. The backlight monitoring light assembly of claim 4, wherein: the laser comprises a gasket, wherein the laser is arranged on the gasket, and the reflecting mirror is arranged on the position opposite to the laser backlight emitting surface on the gasket.
6. The backlight monitoring light assembly of claim 2, wherein: the condensing lens is glued on the V-shaped groove through the optical glue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910600811.8A CN110266379B (en) | 2019-07-04 | 2019-07-04 | Backlight monitoring optical assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910600811.8A CN110266379B (en) | 2019-07-04 | 2019-07-04 | Backlight monitoring optical assembly |
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| Publication Number | Publication Date |
|---|---|
| CN110266379A CN110266379A (en) | 2019-09-20 |
| CN110266379B true CN110266379B (en) | 2024-06-11 |
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| CN201910600811.8A Active CN110266379B (en) | 2019-07-04 | 2019-07-04 | Backlight monitoring optical assembly |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2021218463A1 (en) * | 2020-04-26 | 2021-11-04 | 青岛海信宽带多媒体技术有限公司 | Optical module |
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| CN110266379A (en) | 2019-09-20 |
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