CN113237545A - Optical power detection pen free of carrying tail fiber - Google Patents
Optical power detection pen free of carrying tail fiber Download PDFInfo
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- CN113237545A CN113237545A CN202110540243.4A CN202110540243A CN113237545A CN 113237545 A CN113237545 A CN 113237545A CN 202110540243 A CN202110540243 A CN 202110540243A CN 113237545 A CN113237545 A CN 113237545A
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- 230000003287 optical effect Effects 0.000 title claims abstract description 87
- 238000001514 detection method Methods 0.000 title claims abstract description 83
- 239000000835 fiber Substances 0.000 title claims abstract description 38
- 239000013307 optical fiber Substances 0.000 claims abstract description 63
- 238000006243 chemical reaction Methods 0.000 claims description 24
- 238000001914 filtration Methods 0.000 claims description 17
- 230000003321 amplification Effects 0.000 claims description 15
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 15
- 238000012545 processing Methods 0.000 claims description 13
- 238000003860 storage Methods 0.000 claims description 11
- 238000012360 testing method Methods 0.000 description 17
- 238000004891 communication Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000006870 function Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 206010070834 Sensitisation Diseases 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008313 sensitization Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/02—Details
- G01J1/0219—Electrical interface; User interface
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
- G01J1/44—Electric circuits
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/30—Testing of optical devices, constituted by fibre optics or optical waveguides
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- Engineering & Computer Science (AREA)
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- Chemical & Material Sciences (AREA)
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- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Abstract
The invention discloses a portable tail fiber-free optical power detection pen, which comprises: a housing in a long column shape; a fiber optic adapter disposed at an end of the housing; the optical power detection circuit is arranged in the shell, and a signal input port of the optical power detection circuit is electrically connected with the optical fiber adapter; the display screen is arranged on the wall surface of the shell, and a signal input port of the display screen is electrically connected with a signal output port of the power detection circuit; the optical fiber signal input from the optical fiber adapter is calculated into optical power through the optical power detection circuit, and then the optical power is displayed by the display screen. Compared with the prior art, the detection pen has the advantages of convenience in carrying, small misoperation risk and high detection efficiency.
Description
Technical Field
The invention relates to an optical power detection pen without carrying tail fibers, and belongs to the technical field of optical power detection.
Background
Optical fiber communication is used as a main communication mode of a power communication private network and covers all stations, along with continuous construction of a network, the number of optical cables accessed to the stations is more and more, optical cables of most stations are accessed to an optical fiber distribution cabinet, and along with continuous increase of service demand, tail fibers are distributed in the cabinet frequently. In the actual work of operation and maintenance personnel, such as optical cable detection, service cutting and the like, the attenuation of the fiber core of the optical cable is often required to be tested, and the receiving and sending of optical fiber signals are detected. The conventional test mode is that the tail fiber in the cabinet is pulled out first, then one end of a test tail fiber is inserted into the optical fiber interface, and the other end of the test tail fiber is connected with the optical power meter for testing. Through the practical discovery of mass production of the applicant, the existing test method has the following problems: firstly, in the process of continuously plugging and unplugging the test tail fiber, the risk of mistakenly operating other fibers is caused, especially in a station with larger service volume, because more tail fibers are accessed, the operation space of the ODF wiring unit is narrow, and a hand is difficult to stretch into the ODF wiring unit to insert the tail fiber into a fiber core; and secondly, the optical fiber detection efficiency is low, which is not favorable for the requirement of interruption time during service cutover.
Disclosure of Invention
Based on the above, the invention provides the tail fiber-free optical power detection pen which is convenient to operate, high in detection efficiency and capable of reducing the misoperation risk.
The technical scheme of the invention is as follows: a portable tail fiber-free optical power detection pen comprises:
a housing in a long column shape;
a fiber optic adapter disposed at an end of the housing;
the optical power detection circuit is arranged in the shell, and a signal input port of the optical power detection circuit is electrically connected with the optical fiber adapter;
the display screen is arranged on the wall surface of the shell, and a signal input port of the display screen is electrically connected with a signal output port of the power detection circuit;
the optical fiber signal input from the optical fiber adapter is calculated into optical power through the optical power detection circuit, and then the optical power is displayed by the display screen.
In one example, the optical fiber adapters include a first optical fiber adapter and a second optical fiber adapter respectively disposed at two end portions of the housing, and the first optical fiber adapter and the second optical fiber adapter are electrically connected to a signal input port of the optical power detection circuit.
In one example, the first fiber optic adapter is a male FC connector and the second fiber optic adapter is a female FC connector.
In one example, the optical power detection circuit includes:
the optical detector is electrically connected with the optical fiber adapter and used for receiving an optical signal;
the photoelectric conversion circuit is electrically connected with the optical detector and is used for converting an optical signal into a current signal;
the I/V conversion circuit is electrically connected with the photoelectric conversion circuit and is used for converting the current signal into a voltage signal;
the filtering and amplifying circuit is electrically connected with the I/V conversion circuit and is used for amplifying the voltage signal and filtering the ripple signal;
the A/D conversion circuit is electrically connected with the filtering amplification circuit and is used for converting the voltage signal into a digital signal;
and the MCU processing circuit is respectively electrically connected with the A/D conversion circuit and the display screen, and is used for calculating the optical power according to the digital signal and outputting the optical power value to the display screen for displaying.
In one example, the optical power detection circuit further includes:
the range switching circuit is electrically connected with the filtering amplification circuit and the MCU processing circuit respectively;
the MCU processing circuit controls the amplification factor of the filtering amplification circuit according to the range command of the range switching circuit.
In one example, the method further comprises the following steps:
and the rechargeable storage battery is used for supplying working electricity for the optical power detection circuit and the display screen.
In one example, the method further comprises the following steps:
the charging interface is arranged on the shell and is electrically connected with the rechargeable storage battery;
the rechargeable storage battery can be charged through the charging interface.
In one example, the method further comprises the following steps:
and the power supply button is arranged on the shell and used for controlling whether the rechargeable storage battery supplies power or not.
The invention has the beneficial effects that: after the detection pen is adopted, when the optical power is detected, the tail fiber of the optical fiber interface to be detected in the cabinet can be firstly pulled out, then the optical fiber adapter of the detection pen is inserted into the corresponding optical fiber interface, the optical fiber signal input from the optical fiber adapter is displayed by the display screen after the optical power is calculated by the optical power detection circuit, and the detection of the optical power can be quickly realized. Compared with the prior art, the detection pen has the advantages that:
1. is convenient to carry. The detection pen is smaller in size, more convenient to carry and convenient to test in a complicated machine room link.
2. The risk of misoperation is small. This detection pen need not to carry the test tail optical fiber, has removed the intermediate link of connecting the test tail optical fiber from, can directly peg graft fast through optic fibre adapter and the optical fiber interface that awaits measuring, can make fortune dimension personnel more be convenient for detect in narrow and small space, has avoided the maloperation risk that repeated plug test tail optical fiber caused.
3. The detection efficiency is high. The detection pen can be directly inserted into the interface to be detected through the optical fiber adapter, and detection efficiency can be effectively improved.
Drawings
FIG. 1 is a schematic structural diagram of a tail fiber-free optical power detection pen;
FIG. 2 is a schematic diagram of the optical power detection pen without carrying the tail fiber;
description of reference numerals:
1, a shell;
2, a fiber optic adapter;
3, displaying a screen;
4, a charging interface;
5 a power button;
6 range switch buttons.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, but rather should be construed as broadly as the present invention is capable of modification in various respects, all without departing from the spirit and scope of the present invention.
The invention provides a tail fiber-free optical power detection pen, which comprises a shell 1, an optical fiber adapter 2, an optical power detection circuit and a display screen 3. The casing 1 is in a long column shape, and specifically can be in a pen shape, and the inside of the casing is provided with a containing cavity capable of containing parts such as an optical power detection circuit. A fiber optic adapter 2 is mounted on the end of the housing 1 for receiving optical signals. The optical power detection circuit is arranged in the shell 1, a signal input port of the optical power detection circuit is electrically connected with the optical fiber adapter 2, and the optical power detection circuit is used for calculating optical power. The display screen 3 is mounted on the wall surface of the casing 1, and a signal input port of the display screen 3 is electrically connected to a signal output port of the power detection circuit. In this embodiment, the display screen 3 may be an OLED screen.
After adopting this detection pen, when detecting optical power, can pull out the tail fiber of the optical fiber interface that awaits measuring in the rack earlier, then insert this detection pen's optic fibre adapter 2 in corresponding optical fiber interface, from the optical fiber signal of optic fibre adapter 2 input, after calculating into optical power through the optical power detection circuit, show by display screen 3 to can realize the detection of optical power fast. Compared with the prior art, the detection pen has the advantages that:
1. is convenient to carry. The detection pen is smaller in size, more convenient to carry and convenient to test in a complicated machine room link.
2. The risk of misoperation is small. This detection pen need not to carry the test tail optical fiber, has removed the intermediate link of connecting the test tail optical fiber from, can directly peg graft fast through optic fibre adapter 2 and the optical fiber interface that awaits measuring, can make fortune dimension personnel more be convenient for detect in narrow and small space, has avoided the maloperation risk that repeated plug test tail optical fiber caused.
3. The detection efficiency is high. The detection pen can be directly inserted into the interface to be detected through the optical fiber adapter 2, and detection efficiency can be effectively improved.
Further, in this test pen, the optical fiber adapter 2 includes a first optical fiber adapter and a second optical fiber adapter, which are respectively disposed at two ends of the housing 1, and the first optical fiber adapter and the second optical fiber adapter are both electrically connected to the signal input port of the optical power detection circuit. Specifically, because the optical fiber adapters 2 are installed at both ends of the housing 1, the test of the optical fiber interfaces to be tested in different directions can be realized without converting the direction of the detection pen in a narrow space of the cabinet. It should be noted that the first fiber optic adapter and the second fiber optic adapter adopt a parallel circuit structure, and one of the first fiber optic adapter and the second fiber optic adapter is selected as a signal input interface during testing.
Furthermore, in this test pen, first optic fibre adapter is FC male head, and second optic fibre adapter is FC female head to alright peg graft different optical fiber interface that awaits measuring simultaneously. In other embodiments, the fiber optic adapter 2 may also be an SC, ST &2.5mm universal joint for further increased utility.
Further, in the detection pen, the optical power detection circuit comprises an optical detector, a photoelectric conversion circuit, an I/V conversion circuit, a filtering amplification circuit, an A/D conversion circuit and an MCU processing circuit, wherein the optical detector is electrically connected with the optical fiber adapter 2 and used for receiving optical signals; the photoelectric conversion circuit is electrically connected with the optical detector and is used for converting the optical signal into a current signal; the I/V conversion circuit is electrically connected with the photoelectric conversion circuit and is used for converting the current signal into a voltage signal; the filtering and amplifying circuit is electrically connected with the I/V conversion circuit and is used for amplifying the voltage signal and filtering out the ripple signal; the A/D conversion circuit is electrically connected with the filtering amplification circuit and is used for converting the voltage signal into a digital signal; the MCU processing circuit is respectively electrically connected with the A/D conversion circuit and the display screen 3 and is used for calculating the optical power according to the digital signals and outputting the optical power value to the display screen 3 for displaying.
Specifically, the light detector projects received light signals on a photosensitive surface, the light signals are converted into current by a photoelectric conversion circuit, voltage signals are obtained through an I/V conversion circuit and an amplifying circuit, then the signals are sent to a low-pass filter for filtering and responsivity compensation and amplification, voltage corresponding to a power value is obtained, then the voltage is subjected to A/D conversion, digital quantity representing the power value is obtained, and finally data processing and judgment are carried out through an MCU processing circuit, and the data are sent to a display for light power display.
Furthermore, in the detection pen, the optical power detection circuit further comprises a range switching circuit, and the range switching circuit is electrically connected with the filtering amplification circuit and the MCU processing circuit respectively. Under the working state, the MCU processing circuit can control the amplification factor of the filtering amplification circuit according to the range command of the range switching circuit, thereby obtaining different measurement ranges. The range switching circuit can be provided with a range switching button 6 on the shell 1, and the range switching is realized by the range switching button 6. In this embodiment, the supported optical fiber optical signal wavelength range is 800-1700 nm, and specifically, the measurement range can be switched by a short span switching circuit, for example, 850nm/1300nm/1310nm/1490nm/1550nm/1625 nm.
Furthermore, the detection pen also comprises a rechargeable storage battery which is used for supplying power for the operation of the optical power detection circuit and the display screen 3. The storage battery can be a lithium battery, can be charged repeatedly, and can work continuously for 12 hours after single charging.
Furthermore, the detection pen further comprises a charging interface 4, wherein the charging interface 4 is arranged on the shell 1 and is electrically connected with the rechargeable storage battery; the rechargeable battery can be charged through the charging interface 4. In this embodiment, the charging interface 4 may be a general type-c interface, and may realize rapid charging of the storage battery.
Furthermore, the detection pen further comprises a power button 5 arranged on the shell 1 and used for controlling the power supply of the rechargeable storage battery, so that the on-off of the detection pen is realized. In this embodiment, the detection pen enters the automatic power-off function after no operation for 5 minutes, or the power-off function is turned off after long pressing of the power-off key for 1 second, and the current consumption is less than or equal to 5uA in the power-off state.
In one example, in the detection pen, the optical detector adopts an LSIPD-L0.3 series sensor of 'Beijing sensitization light', the MCU processing circuit adopts a 51 single chip microcomputer of STC as a main control chip, an OLED screen display is equipped as an information display interface, and the probe adopts the LSIPD-L0.3 series sensor of 'Beijing sensitization light', and is equipped with 2 tact function switches. The power circuit adopts a 5VDC power supply which is easy to obtain as a charging power supply, and selects a currently popular type-c interface, and the interface can be used for quick charging and can also be used for firmware upgrade of equipment (the firmware upgrade is only used in the device and is not open to the outside). The 5V power supply charges the soft package lithium battery after passing through the charging IC, the battery adopts 4.2V/400 mAh capacity, the maximum charging current is controlled within 1C, the current is 400mA, and the battery is provided with a protection IC. The power output by BAT is supplied to the whole machine by 3.3V output by LDO with EN end, the enable of LDO is determined by IO end of single chip and power key, thus the power off and ultra-low power consumption output can be realized. Because the output signal of the sensor is a relational expression of optical power-micro-irrigation current, the sensor is not suitable for adopting a conventional operational amplifier voltage amplifying circuit, needs to adopt a micro-current to voltage amplifying circuit to carry out signal acquisition, and needs to adopt a channel switching IC to switch the amplification factor of the operational amplifier so as to adapt to different signal power measurements.
The detection pen is a portable optical power meter, is a basic tool for accurately measuring the optical fiber power, has small and exquisite appearance and is convenient to use, and is used for quickly detecting the power attenuation condition of a light source after the light source passes through an optical fiber in a simple and effective mode so as to judge the problems of disconnection, serious loss and the like of the optical fiber. Is a necessary tool which is specially designed for installation, operation and maintenance of optical fiber communication personnel and is convenient to carry.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (8)
1. The utility model provides a do not need to carry optical power detection pen of tail optical fiber which characterized in that includes:
a housing (1) in the shape of a long column;
a fiber optic adapter (2) disposed at an end of the housing (1);
the optical power detection circuit is arranged in the shell (1), and a signal input port of the optical power detection circuit is electrically connected with the optical fiber adapter (2);
the display screen (3) is arranged on the wall surface of the shell (1), and a signal input port of the display screen (3) is electrically connected with a signal output port of the power detection circuit;
the optical fiber signal input from the optical fiber adapter (2) is calculated into optical power through the optical power detection circuit, and then is displayed by the display screen (3).
2. The optical power detection pen without the pigtail according to claim 1, wherein the optical fiber adapter (2) comprises a first optical fiber adapter and a second optical fiber adapter respectively disposed at two ends of the housing (1), and the first optical fiber adapter and the second optical fiber adapter are electrically connected to a signal input port of the optical power detection circuit.
3. The optical power detection pen of claim 2, wherein the first optical fiber adapter is a FC male connector, and the second optical fiber adapter is a FC female connector.
4. The optical power detection pen without carrying tail fiber of claim 1, wherein the optical power detection circuit comprises:
the optical detector is electrically connected with the optical fiber adapter (2) and is used for receiving an optical signal;
the photoelectric conversion circuit is electrically connected with the optical detector and is used for converting an optical signal into a current signal;
the I/V conversion circuit is electrically connected with the photoelectric conversion circuit and is used for converting the current signal into a voltage signal;
the filtering and amplifying circuit is electrically connected with the I/V conversion circuit and is used for amplifying the voltage signal and filtering the ripple signal;
the A/D conversion circuit is electrically connected with the filtering amplification circuit and is used for converting the voltage signal into a digital signal;
and the MCU processing circuit is respectively electrically connected with the A/D conversion circuit and the display screen (3), and is used for calculating optical power according to the digital signal and outputting an optical power value to the display screen (3) for displaying.
5. The pigtail-free optical power detection pen of claim 4, wherein the optical power detection circuit further comprises:
the range switching circuit is electrically connected with the filtering amplification circuit and the MCU processing circuit respectively;
the MCU processing circuit controls the amplification factor of the filtering amplification circuit according to the range command of the range switching circuit.
6. The optical power detection pen without carrying tail fiber according to claim 1, further comprising:
and the rechargeable battery is used for supplying power for the operation of the optical power detection circuit and the display screen (3).
7. The optical power detection pen without carrying tail fiber according to claim 6, further comprising:
the charging interface (4) is arranged on the shell (1) and is electrically connected with the rechargeable storage battery;
the rechargeable battery can be charged through the charging interface (4).
8. The optical power detection pen without carrying tail fiber according to claim 6, further comprising:
and the power supply button (5) is arranged on the shell (1) and is used for controlling whether the rechargeable storage battery supplies power or not.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110540243.4A CN113237545B (en) | 2021-05-18 | 2021-05-18 | Optical power detection pen free of carrying tail fiber |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110540243.4A CN113237545B (en) | 2021-05-18 | 2021-05-18 | Optical power detection pen free of carrying tail fiber |
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| CN113237545A true CN113237545A (en) | 2021-08-10 |
| CN113237545B CN113237545B (en) | 2023-04-07 |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4403826A (en) * | 1981-03-23 | 1983-09-13 | Bell Telephone Laboratories, Incorporated | Ultraviolet radiation detector |
| JPH1183625A (en) * | 1997-12-29 | 1999-03-26 | Craig D Poole | Optical power meter using low current measuring circuit |
| CN201680907U (en) * | 2010-05-28 | 2010-12-22 | 桂林电子科技大学 | Dual-purpose optical power meter |
| CN202693267U (en) * | 2012-04-19 | 2013-01-23 | 山西省电力公司大同供电分公司 | Optical fiber test apparatus |
| CN104793295A (en) * | 2015-03-24 | 2015-07-22 | 长芯盛（武汉）科技有限公司 | USB3.0 type photoelectric hybrid connector connecting assembly of composite optical cable |
| CN105717580A (en) * | 2016-03-16 | 2016-06-29 | 华为技术有限公司 | Male head and female head of optical fiber connector and an optical fiber connector |
| CN207096500U (en) * | 2017-07-10 | 2018-03-13 | 国网江苏省电力公司南京供电公司 | A kind of multifunctional optical fiber adapter crossover tool |
| CN208399010U (en) * | 2018-07-19 | 2019-01-18 | 厦门市贝莱通信设备有限公司 | A kind of TAP spectroscopic detectors |
-
2021
- 2021-05-18 CN CN202110540243.4A patent/CN113237545B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4403826A (en) * | 1981-03-23 | 1983-09-13 | Bell Telephone Laboratories, Incorporated | Ultraviolet radiation detector |
| JPH1183625A (en) * | 1997-12-29 | 1999-03-26 | Craig D Poole | Optical power meter using low current measuring circuit |
| CN201680907U (en) * | 2010-05-28 | 2010-12-22 | 桂林电子科技大学 | Dual-purpose optical power meter |
| CN202693267U (en) * | 2012-04-19 | 2013-01-23 | 山西省电力公司大同供电分公司 | Optical fiber test apparatus |
| CN104793295A (en) * | 2015-03-24 | 2015-07-22 | 长芯盛（武汉）科技有限公司 | USB3.0 type photoelectric hybrid connector connecting assembly of composite optical cable |
| CN105717580A (en) * | 2016-03-16 | 2016-06-29 | 华为技术有限公司 | Male head and female head of optical fiber connector and an optical fiber connector |
| CN207096500U (en) * | 2017-07-10 | 2018-03-13 | 国网江苏省电力公司南京供电公司 | A kind of multifunctional optical fiber adapter crossover tool |
| CN208399010U (en) * | 2018-07-19 | 2019-01-18 | 厦门市贝莱通信设备有限公司 | A kind of TAP spectroscopic detectors |
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| Title |
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| SUCHANDAN PAL 等: "Fabrication and performance-analysis of a planar silica-based cascaded symmetric Y-branch 1 × 8 optical power splitter" * |
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