CN117539052A - Single-channel optical attenuation module and optical attenuator - Google Patents
Single-channel optical attenuation module and optical attenuator Download PDFInfo
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- CN117539052A CN117539052A CN202410027666.XA CN202410027666A CN117539052A CN 117539052 A CN117539052 A CN 117539052A CN 202410027666 A CN202410027666 A CN 202410027666A CN 117539052 A CN117539052 A CN 117539052A
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- 230000003287 optical effect Effects 0.000 title claims abstract description 75
- 238000013016 damping Methods 0.000 claims abstract description 14
- 230000001681 protective effect Effects 0.000 claims description 6
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 230000005693 optoelectronics Effects 0.000 claims 2
- 238000012360 testing method Methods 0.000 description 17
- 238000010586 diagram Methods 0.000 description 12
- 238000012544 monitoring process Methods 0.000 description 12
- 239000013307 optical fiber Substances 0.000 description 11
- 230000007613 environmental effect Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
- G02B26/0816—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light by means of one or more reflecting elements
- G02B26/0833—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light by means of one or more reflecting elements the reflecting element being a micromechanical device, e.g. a MEMS mirror, DMD
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Light Control Or Optical Switches (AREA)
Abstract
The invention discloses a single-channel light attenuation module, which comprises: a linear sliding table; the damping piece is arranged on the sliding block of the linear sliding table, the damping piece is driven by the sliding block to do linear motion, and the damping piece is arranged at an included angle with the linear motion direction of the damping piece; the collimating component is arranged above the attenuation sheet and comprises two collimators, the two collimators are symmetrically arranged on two sides of the attenuation sheet in the linear movement direction of the attenuation sheet, and light of the collimators passes through corresponding positions of the attenuation sheet when the attenuation sheet moves linearly. According to the invention, the attenuation value is independently adjusted through the optical attenuation module, so that the volume is miniaturized, and in this case, the attenuator can be provided with a plurality of optical attenuation modules, so that one attenuator is provided with a plurality of channels, a plurality of devices are supported, and the cost is reduced.
Description
Technical Field
The invention relates to the technical field of optical attenuators, in particular to a single-channel optical attenuation module and an optical attenuator.
Background
The multimode attenuator with power monitoring is one of basic devices of an optical communication test measurement scene, and is necessary equipment for further building a test system. The requirements of the optical module test scene on the multimode attenuator with power monitoring are clear, and the requirements of the optical chip market on the multimode attenuator with power monitoring are also expected.
At present, the scheme for realizing attenuation value adjustment usually adopts an MEMS attenuator, and one attenuator only has one channel for use, and only can support one device, generally a case is integrated, so that the volume is large, small-volume modularization cannot be realized, and if a plurality of devices are supported, a plurality of attenuators are needed, so that the cost is high. In addition, MEMS attenuators are susceptible to environmental factors (temperature changes and vibration), resulting in poor attenuation accuracy.
Disclosure of Invention
Features and advantages of the invention will be set forth in part in the description which follows, or may be obvious from the description, or may be learned by practice of the invention.
In order to solve the problems that the existing optical attenuator is only used by one channel, only one device can be supported, the volume is large due to the integration of the devices, and meanwhile, if a plurality of devices are to be supported, a plurality of optical attenuators are needed, so that the cost is high.
The technical scheme adopted by the invention for solving the technical problems is as follows: providing a single channel optical attenuation module comprising:
a linear sliding table;
the damping piece is arranged on the sliding block of the linear sliding table, the damping piece is driven by the sliding block to do linear motion, and the damping piece is arranged at an included angle with the linear motion direction of the damping piece;
the collimating component is arranged above the attenuation sheet and comprises two collimators, the two collimators are symmetrically arranged on two sides of the attenuation sheet in the linear movement direction of the attenuation sheet, and light of the collimators passes through corresponding positions of the attenuation sheet when the attenuation sheet moves linearly.
The single-channel optical attenuation module further comprises an input end and an output end, wherein one collimator is connected with the input end, and the other collimator is connected with the output end.
The single-channel light attenuation module further comprises an input end and an output end, wherein the input end is connected with one of the collimators, the output end is connected with the beam splitter, the beam splitter is connected with the other collimator through one channel, and the beam splitter is connected with the photoelectric detector through the other channel.
The single-channel light attenuation module further comprises an encoder, a rotating shaft of the encoder is connected with an output shaft of a motor of the linear sliding table through a coupler, and the encoder is used for recording the position of an attenuation sheet.
The damping piece is installed on the slider through the mounting panel, be equipped with the anti-dazzling screen on the mounting panel, one side of straight line slip table is equipped with photoelectric switch, through the cooperation of anti-dazzling screen and photoelectric switch restriction damping piece's travel distance.
The single-channel light attenuation module further comprises a cover body arranged on the base of the linear sliding table, and a U-shaped notch is formed in the top of the cover body; the collimation assembly further comprises a support, the support comprises a top plate and two side plates arranged on the top plate at intervals, the top plate is fixed on the top surface of the cover body, the two side plates extend into the cover body, and a collimator is arranged on each side plate.
The left and right ports of the U-shaped notch are respectively positioned on the left and right sides of the cover body, and each port is provided with a protective cover.
The optical attenuator comprises a shell, wherein a plurality of optical attenuation modules are arranged in the shell.
According to the single-channel optical attenuation module, the attenuation value is independently adjusted, the size is miniaturized, in this case, the attenuator can be provided with a plurality of optical attenuation modules, one optical attenuator is provided with a plurality of channels, a plurality of devices are supported, and the cost is reduced. Through setting up the encoder and being used for monitor motor rotation position, and then according to motor rotation position record attenuation piece position for accuracy and stability that the attenuation value was adjusted improve like this, solved and received the problem that environmental factor leads to the precision to become poor.
Drawings
The advantages and the manner of carrying out the invention will become more apparent from the following detailed description, taken in conjunction with the accompanying drawings, in which the content shown is meant to illustrate, but not to limit, the invention in any sense, and wherein:
FIG. 1 is a diagram showing an external structure of an optical attenuation module according to the present invention;
FIG. 2 is a schematic diagram of a second external configuration of the optical attenuation module according to the present invention;
FIG. 3 is an exploded view of the light attenuating module of the present invention;
FIG. 4 is a schematic diagram of the light attenuating module of the present invention with the cover removed;
FIG. 5 is a schematic diagram of a light attenuation module according to the present invention from the side;
FIG. 6 is a block diagram of an optical attenuation module without monitoring optical power in accordance with the present invention;
FIG. 7 is a block diagram of an optical attenuation module with monitor optical power in accordance with the present invention;
FIG. 8 is an external block diagram of an optical attenuator in the present invention;
FIG. 9 is an internal structural view of an optical attenuator according to the present invention;
fig. 10 is a view from above to below in fig. 9;
FIG. 11 is a block diagram of an optical attenuator of the present invention connected to a light source and a power meter;
FIG. 12 is a block diagram of an optical attenuator of the present invention installed in a chassis of an ALPHA test platform;
fig. 13 is a block diagram of the optical attenuator of the present invention installed in a chassis of an OMEGA test platform.
Description of the embodiments
As shown in fig. 1 to 5, the optical attenuation module 100 provided in the present invention is a single channel, and includes a linear sliding table, an attenuation sheet and a collimation assembly.
The linear sliding table comprises a U-shaped base, a screw rod 105, a guide rail sliding block assembly and a motor 106, wherein the base comprises a strip-shaped bottom plate 101 and end plates 102 arranged at two ends of the bottom plate 101, the screw rod 105 is arranged on the two end plates 102, a guide rail 103 is arranged on the bottom plate 101, a sliding block 104 is arranged on the guide rail 103 and is in threaded fit with the screw rod 105, the motor 106 is arranged on the outer side face of the left end plate, an output shaft of the motor 106 is connected with the screw rod 105, and the motor 106 drives the screw rod 105 to rotate so as to drive the sliding block 104 to do reciprocating linear motion.
The rectangular attenuation piece 200 is mounted on the sliding block 104 through the mounting plate 210, the attenuation piece 200 is driven by the sliding block 104 to do linear motion, and the attenuation piece 200 and the linear motion direction of the attenuation piece are arranged at an included angle of 4 degrees.
The collimating component is arranged above the attenuation sheet 200, the collimating component comprises a bracket and two collimators 320, the two collimators 320 are symmetrically arranged on two sides of the attenuation sheet 200 with the linear motion direction of the attenuation sheet 200, and light of the collimators 320 passes through corresponding positions of the attenuation sheet 200 when the attenuation sheet 200 moves linearly, so that attenuation value adjustment is realized. According to the invention, the attenuation value is independently adjusted through the optical attenuation module, so that the volume is miniaturized, and in this case, the optical attenuator can be provided with a plurality of optical attenuation modules, so that one optical attenuator is provided with a plurality of channels, a plurality of devices are supported, and the cost is reduced.
As shown in fig. 1 to 5, the light attenuation module further includes a cover 400, the cover 400 is fixedly mounted on the base of the linear sliding table, and a U-shaped notch 410 is formed at the top of the cover 400. The bracket comprises a top plate 311 and two side plates 312 which are arranged on the top plate at intervals, the top plate 311 is fixed on the top surface of the cover body 400 through screws, the two side plates 312 extend into the cover body 400, and each side plate 312 is provided with one collimator 320, so that the two collimators 320 are respectively positioned on the left side and the right side of the attenuation sheet 200.
In this embodiment, the left and right ports of the U-shaped notch 410 are respectively located on the left and right sides of the cover 400, and each port is provided with a protective cover 420. The protective cover 420 is U-shaped, and the opening of the protective cover 420 is downward after being fixed on the cover 420, and the multimode optical fiber 500 connected with the collimator can be prevented from being bent by arranging the protective cover 420, so as to protect the optical fiber.
As shown in fig. 3 and 5, the optical attenuation module further includes an encoder 500, the rotation shaft of the encoder 500 is connected with the output shaft of the motor 106 of the linear sliding table through a coupling 510, the encoder 500 is used for monitoring the rotation position of the motor, and further recording the position of the attenuation sheet according to the rotation position of the motor, so that the accuracy and stability of attenuation value adjustment are improved, and the problem of precision degradation caused by environmental factors is solved. A U-shaped web 520 is provided between the encoder 500 and the motor 106.
As shown in fig. 3 and 4, the mounting plate 210 is provided with a light shielding plate 620, one side of the linear sliding table is provided with a photoelectric switch 610, and the moving distance of the attenuation plate 210 is limited by matching the light shielding plate 620 with the photoelectric switch 610. In this embodiment, the light shielding plate 620 is fixed at the front end of the mounting plate 210 by a screw, the photoelectric switch 610 is fixed on an optocoupler circuit board 630, and the optocoupler circuit board 630 is fixed on the cover 400 by a screw. When the light shielding sheet 620 moves to the position where the photoelectric switch 610 is located, the light shielding sheet 620 shields the photoelectric switch 610, indicating that the attenuation sheet 200 has moved forward to the maximum distance, and when the motor rotates in the opposite direction, the attenuation sheet 200 moves backward.
Fig. 6 is a block diagram of a mechanical multimode POA without a monitoring single channel optical attenuation module. In this embodiment, the optical attenuation module further includes an input end 1 and an output end 2, wherein one collimator is connected to the input end 1 through the multimode optical fiber 500, and the other collimator is connected to the output end 2 through the multimode optical fiber 500.
Fig. 7 is a block diagram of a mechanical multimode POA tape monitoring single channel optical attenuation module. In this embodiment, the optical attenuation module further includes an input end 1 and an output end 2, where the input end 1 is connected to one of the collimators through the multimode optical fiber 500. The output end 2 is connected with the optical splitter 700 through the multimode optical fibers 500, the optical splitter 700 is connected with another collimator through one multimode optical fiber 500, and the optical splitter 700 is connected with the photoelectric detector 800 through another multimode optical fiber 500 channel.
Referring to fig. 3, the photodetector 800 is mounted on a module circuit board 107.
The single-channel light attenuation module can realize the functions of monitoring and not monitoring the light power according to the demands of clients, has the function of monitoring the light power, needs to be provided with a photoelectric detector and a beam splitter, and can split part of constant light through the beam splitter, and the part of constant light is received by the photoelectric detector to detect the light power so as to realize the power monitoring.
As shown in fig. 8 to 10, the present invention further proposes an optical attenuator 3, where the optical attenuator 3 includes a housing 301, and a plurality of optical attenuation modules 100 are disposed in the housing 301. In this embodiment, the optical attenuator 3 is provided with 4 optical attenuation modules 100.
Referring to fig. 7 and 9, the input end of the optical attenuation module 100 is connected to the input interface 302 on the housing 301, and the output end of the optical attenuation module 100 is connected to the output interface 303 on the housing 301.
Referring to fig. 11, an input interface 302 of the optical attenuator is connected to an external light source 4 through an optical fiber, and an output interface 303 of the optical attenuator is connected to an external power meter 5 through an optical fiber.
The optical attenuator is a 4-channel multimode optical attenuator, can completely and independently work in 4 channels, can self-define the intensity of light to be attenuated to a certain size, can be matched with different modules for use, and is applied to building various different test systems.
The optical attenuation module and the optical attenuator can develop and provide test products such as 1 channel, 2 channel, 3 channel or 4 channel according to different test requirements of clients, reduce research and development cost, improve production efficiency, and effectively reduce use cost of the clients, and the clients can realize the use of various modules by only purchasing one case.
Fig. 12 and 13 show embodiments of specific applications of the optical attenuator, where the optical attenuator 3 of the present invention may be installed in a chassis of an ALPHA test platform or in a chassis of an OMEGA test platform. The standard double-slot module universal socket can be directly inserted into an OMEGA test platform chassis or an ALPHA test platform chassis for use.
The POA multimode programmable variable optical attenuator with power monitoring can be matched with an ALPHA test platform or an OMEGA test platform for use, and is communicated with a host through a USB-TMC protocol to form a programmable POA four-channel programmable variable optical attenuator.
According to the light attenuation module, the optical fiber collimators are fixed on each independent linear sliding table, the encoders are arranged on the linear sliding tables, the continuously gradual-changed rectangular attenuation sheets are fixed on the sliding blocks of the linear sliding tables, the sliding blocks move to drive the attenuation sheets to move, the collimators are fixed, the sliding blocks move to different positions, and light of the collimators passes through the corresponding positions of the attenuation sheets to realize attenuation value adjustment. The single optical attenuation module corresponds to a set of optical path and circuit system, the circuits of the single optical attenuation module are controlled respectively through the chip selection of the main circuit board, each single-channel optical attenuation module can independently carry out attenuation value adjustment, and standard double-slot modules are used for carrying out arbitrary selection of 1 to 4 channels, so that the test requirements of different customers are met, and the single-channel optical attenuation module can be matched with an OMEGA test platform case and an ALPHA test platform case.
While the preferred embodiments of the present invention have been illustrated by reference to the accompanying drawings, those skilled in the art will appreciate that many modifications are possible in carrying out the invention without departing from the scope and spirit thereof. For example, features illustrated or described as part of one embodiment can be used on another embodiment to yield still a further embodiment. The foregoing description and drawings are merely illustrative of preferred embodiments of the present invention and are not intended to limit the scope of the claims, but rather to cover all modifications within the scope of the present invention.
Claims (8)
1. Single channel optical attenuation module, its characterized in that includes:
a linear sliding table;
the damping piece (200) is arranged on the sliding block (104) of the linear sliding table, the damping piece (200) is driven by the sliding block (104) to do linear motion, and the damping piece (200) is arranged at an included angle with the linear motion direction of the damping piece;
the collimating assembly is arranged above the attenuation sheet (200), the collimating assembly comprises two collimators (320), the two collimators (320) are symmetrically arranged on two sides of the attenuation sheet (200) with the linear movement direction of the attenuation sheet (200), and light of the collimators (320) passes through corresponding positions of the attenuation sheet (200) when the attenuation sheet (200) moves linearly.
2. The single-channel optical attenuation module according to claim 1, further comprising an input (1) and an output (2), wherein one collimator (320) is connected to the input (1) and the other collimator (320) is connected to the output (2).
3. The single-channel optical attenuation module according to claim 1, further comprising an input end (1) and an output end (2), wherein the input end (1) is connected to one of the collimators (320), the output end (2) is connected to a beam splitter (700), the beam splitter (700) is connected to the other collimator (320) via one channel, and the beam splitter (700) is connected to the photodetector (800) via the other channel.
4. The single-channel optical attenuation module according to claim 1, further comprising an encoder (500), wherein a rotating shaft of the encoder (500) is connected with an output shaft of the motor (106) of the linear sliding table through a coupling (510), and the encoder (500) is used for recording the position of the attenuation sheet.
5. The single-channel optical attenuation module according to claim 1, wherein the attenuation sheet (200) is mounted on the sliding block (104) through a mounting plate (210), a light shielding sheet (620) is arranged on the mounting plate (210), an optoelectronic switch (610) is arranged on one side of the linear sliding table, and the movement distance of the attenuation sheet (200) is limited through the cooperation of the light shielding sheet (620) and the optoelectronic switch (610).
6. The single-channel light attenuation module according to claim 1, further comprising a cover body (400) arranged on the base of the linear sliding table, wherein a U-shaped notch (410) is arranged at the top of the cover body (400); the collimation assembly further comprises a support, the support comprises a top plate (311) and two side plates (312) arranged on the top plate (311) at intervals, the top plate (311) is fixed on the top surface of the cover body (400), the two side plates (312) extend into the cover body (400), and a collimator (320) is arranged on each side plate (312).
7. The single-channel optical attenuation module according to claim 6, wherein the left and right ports of the U-shaped notch (410) are respectively located on the left and right sides of the cover body (400), and each port is provided with a protective cover (420).
8. Optical attenuator (3) comprising a housing (301), characterized in that a number of optical attenuation modules (100) according to any of claims 1 to 7 are arranged in the housing (301).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410027666.XA CN117539052A (en) | 2024-01-09 | 2024-01-09 | Single-channel optical attenuation module and optical attenuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410027666.XA CN117539052A (en) | 2024-01-09 | 2024-01-09 | Single-channel optical attenuation module and optical attenuator |
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| Publication Number | Publication Date |
|---|---|
| CN117539052A true CN117539052A (en) | 2024-02-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410027666.XA Pending CN117539052A (en) | 2024-01-09 | 2024-01-09 | Single-channel optical attenuation module and optical attenuator |
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| CN103630974A (en) * | 2013-12-16 | 2014-03-12 | 中国电子科技集团公司第四十一研究所 | Linear type continuous variable optical attenuation unit |
| CN105049113A (en) * | 2015-06-17 | 2015-11-11 | 武汉光迅科技股份有限公司 | Active optical module multi-channel automatic test system and method |
| CN106375088A (en) * | 2016-10-11 | 2017-02-01 | 吉林大学 | Coder and decoder chips for quantum cryptography communication |
| CN214278474U (en) * | 2021-03-16 | 2021-09-24 | 广州优西科学仪器有限公司 | Multi-channel optical attenuator |
| CN214707482U (en) * | 2021-06-01 | 2021-11-12 | 昆山纳博旺精工科技有限公司 | Linear motor module |
| CN113942955A (en) * | 2020-07-15 | 2022-01-18 | 沈阳新松机器人自动化股份有限公司 | Two-stage linkage lifting device |
| CN216956733U (en) * | 2022-03-02 | 2022-07-12 | 绍兴中科通信设备有限公司 | Portable multi-channel light attenuation device |
| CN115133994A (en) * | 2022-06-30 | 2022-09-30 | 重庆秦嵩科技有限公司 | 4-channel direct modulation electro-optical conversion assembly based on photoelectric hybrid integration |
| CN218411066U (en) * | 2022-08-19 | 2023-01-31 | 江苏力高检测设备有限公司 | Electricity core deformation testing arrangement |
-
2024
- 2024-01-09 CN CN202410027666.XA patent/CN117539052A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103630974A (en) * | 2013-12-16 | 2014-03-12 | 中国电子科技集团公司第四十一研究所 | Linear type continuous variable optical attenuation unit |
| CN105049113A (en) * | 2015-06-17 | 2015-11-11 | 武汉光迅科技股份有限公司 | Active optical module multi-channel automatic test system and method |
| CN106375088A (en) * | 2016-10-11 | 2017-02-01 | 吉林大学 | Coder and decoder chips for quantum cryptography communication |
| CN113942955A (en) * | 2020-07-15 | 2022-01-18 | 沈阳新松机器人自动化股份有限公司 | Two-stage linkage lifting device |
| CN214278474U (en) * | 2021-03-16 | 2021-09-24 | 广州优西科学仪器有限公司 | Multi-channel optical attenuator |
| CN214707482U (en) * | 2021-06-01 | 2021-11-12 | 昆山纳博旺精工科技有限公司 | Linear motor module |
| CN216956733U (en) * | 2022-03-02 | 2022-07-12 | 绍兴中科通信设备有限公司 | Portable multi-channel light attenuation device |
| CN115133994A (en) * | 2022-06-30 | 2022-09-30 | 重庆秦嵩科技有限公司 | 4-channel direct modulation electro-optical conversion assembly based on photoelectric hybrid integration |
| CN218411066U (en) * | 2022-08-19 | 2023-01-31 | 江苏力高检测设备有限公司 | Electricity core deformation testing arrangement |
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