CN111830649A - Optical distribution unit based on fiber bragg grating and distribution method - Google Patents
Optical distribution unit based on fiber bragg grating and distribution method Download PDFInfo
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- CN111830649A CN111830649A CN201910317788.1A CN201910317788A CN111830649A CN 111830649 A CN111830649 A CN 111830649A CN 201910317788 A CN201910317788 A CN 201910317788A CN 111830649 A CN111830649 A CN 111830649A
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- 230000003287 optical effect Effects 0.000 title claims abstract description 55
- 239000000835 fiber Substances 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000001514 detection method Methods 0.000 claims abstract description 79
- 239000013307 optical fiber Substances 0.000 claims abstract description 18
- 230000005540 biological transmission Effects 0.000 abstract description 7
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000012545 processing Methods 0.000 abstract description 2
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 230000007547 defect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
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- 238000005516 engineering process Methods 0.000 description 1
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4439—Auxiliary devices
- G02B6/4471—Terminating devices ; Cable clamps
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4439—Auxiliary devices
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Abstract
The invention discloses an optical distribution unit and a distribution method based on fiber bragg gratings, and provides a method for replacing paper labels with fiber bragg gratings capable of transmitting different wavelengths. Each connection unit comprises a service unit and a detection unit. The service unit comprises a service optical fiber, a service unit connector and a service port. The detection unit comprises a detection optical fiber, a detection unit connector, a detection port and an indicator light. By directing the service unit connector to plug into the target service port, if the transmission wavelengths of the fiber grating in the detection unit connector and the optical filter in the detection port are the same, the identification light passing through the fiber grating can pass through the optical filter. After photoelectric conversion and processing of the main control module, an LED2 indicator light on the side of the target detection port is switched on, which indicates that the target service unit connector and the target service port are successfully matched. The unit may facilitate management and maintenance of the fiber optic line.
Description
Technical Field
The invention relates to the field of optical communication, in particular to an optical distribution unit based on fiber bragg grating and a distribution method.
Background art:
the intense market competition and the rapid development of technology, the requirements of users on network bandwidth, stability and real-time performance are higher and higher, and the trend of FTTx has come. With the increasing demand for opening services, in the optical fiber distribution system, a large number of optical paths need to be distributed, however, how to accurately identify targets in a large number of optical fiber jumpers and pigtail ports becomes a technical problem in the field.
For such point-to-point lines, if the optical fiber distribution management is continued to be performed by using manually identified paper labels, the defects are very obvious, the labels are easy to fall off, the handwriting is easy to be fuzzy, and the label information needs to be looked over one by one to find the target end. Due to the characteristics, the defects of low searching efficiency, easy error and the like are caused, and the maintenance workload and the management difficulty of the system are greatly increased.
In conclusion, the existing optical distribution frame paper label identification has corresponding technical defects, and the identification working efficiency is influenced. Therefore, it is an urgent technical problem to provide a solution that can replace paper labels to realize the identification of optical fibers.
Disclosure of Invention
The invention aims to provide an optical distribution unit and a distribution method based on fiber bragg gratings, which can avoid misjudgment caused by automatic falling of an original paper label and can correctly guide a service fiber connector to be inserted into a specified service port.
An optical distribution unit based on fiber bragg grating comprises a main control module, a connecting unit, an optical splitter and a signal source which are connected in series in sequence, the main control module is connected with the management system, the connection unit comprises a service unit and a detection unit, the main control module is respectively connected with each independent electronic device on the detection unit, the service unit comprises a service optical fiber, a service unit connector and a service port, the service port is arranged on the service unit connector, the service optical fiber is connected with the service unit connector and the optical splitter, the detection unit comprises a detection optical fiber, a detection unit connector, a detection port and an indicator light, the detection port is arranged on the detection unit connector, the detection optical fiber is connected with the detection unit connector and the optical splitter, and the indicator light is arranged on the detection port.
The signal source comprises service signal light and detection signal light, and the working wavelengths of the two signal lights are respectively in different working windows.
The service port and the detection port are bound with each other, and two output ends of each optical splitter are respectively a service unit connector and a detection unit connector which are paired.
The detection unit connector is provided with a fiber grating that is transmissive to a specific wavelength and the specific wavelength is within a wavelength window of the detection optical signal.
The detection port includes: the system comprises an optical filter capable of transmitting specific wavelengths, a photoelectric detection module and two LED indicator lamps, wherein an LED1 is used for guiding a target service port needing to be opened, and an LED2 is used for detecting whether a service unit connector is correctly inserted into the specified target service port.
And the transmission wavelength of the optical filter is consistent with that of the grating in the detection unit connector.
The device usable for the optical filter includes: a fiber grating; a dielectric film; an F-P interferometer; Mach-Zehnder interferometers.
The management system is communicated with an indicator light LED1 of a corresponding target service port through the wiring board main control module, an LED1 indicator light is lightened, and a field worker inserts the service unit connector into the target service port according to the prompt of the LED1 indicator light.
The invention has the advantages that: according to the optical distribution unit based on the fiber bragg grating, the fiber bragg grating capable of transmitting different wavelengths is used for replacing paper labels, the service unit connector is inserted into a target service port according to the indication of the LED1 indicator lamp, whether matching is successful or not is judged according to the LED2 indicator lamp after connection is finished, and the matching condition can be checked in time, and an optical fiber circuit can be managed and maintained.
Drawings
FIG. 1 is a block diagram of an optical distribution line identification unit according to the present invention;
FIG. 2 is a schematic view of a connector of the test unit according to the present invention;
FIG. 3 is a schematic structural diagram of a detection port according to the present invention;
fig. 4 is a schematic structural diagram of a photodetection module according to the present invention.
Wherein: 21-fiber grating, 31-optical filter, 32-photoelectric detection module, 321-photoelectric detector, 322-logic control circuit.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1 to 4, an optical distribution unit based on fiber bragg grating includes a main control module (the main control module is connected to a management system), 12 connection units, 12 optical splitters, and a signal source, wherein: the main control unit and the detection unit are connected with all electronic devices which need to be connected with the main control module through a connection bus, and each connection unit comprises a service unit and a detection unit. The service unit comprises a service optical fiber, a service unit connector and a service port. The detection unit comprises a detection optical fiber, a detection unit connector, a detection port, an LED1 and an LED2 indicator light.
The signal source comprises service signal light and detection signal light, and the working wavelengths of the two signal lights are respectively in different working windows.
The service port and the detection port are bound with each other, and two output ends of each optical splitter are respectively a service unit connector and a detection unit connector which are paired.
The detection unit connector is provided with a fiber grating that is transmissive to a specific wavelength and the specific wavelength is within a wavelength window of the detection optical signal.
The light that can pass through the fiber grating in the detection unit connector is called identification light.
The detection port includes: the system comprises an optical filter capable of transmitting specific wavelengths, a photoelectric detection module and two LED indicator lamps, wherein an LED1 is used for guiding a target service port needing to be opened, and an LED2 is used for detecting whether a service unit connector is correctly inserted into the specified target service port.
And the transmission wavelength of the optical filter is consistent with that of the grating in the detection unit connector.
The device usable for the optical filter includes: a fiber grating; a dielectric film; an F-P interferometer; Mach-Zehnder interferometers.
The management system is communicated with an indicator light LED1 of a corresponding target service port through the wiring board main control module, an LED1 indicator light is lightened, and a field worker inserts the service unit connector into the target service port according to the prompt of the LED1 indicator light.
The photoelectric detection module comprises a photoelectric detector, and if the transmission wavelengths of the fiber bragg grating in the detection unit connector and the optical filter in the detection port are the same, the identification light passing through the fiber bragg grating can pass through the optical filter. The photoelectric detection module converts the identification light signal passing through the optical filter into an electric signal, transmits the electric signal to the main control module, and is processed by the main control module to switch on the lateral LED2 indicator light of the target detection port, so that the target service unit connector and the target service port are successfully matched. If the transmission wavelengths of the fiber grating in the detection unit connector and the optical filter in the detection port are different, the identification light passing through the fiber grating cannot pass through the optical filter. Then the photodetector does not detect the optical signal after the optical filter, the main control module does not work, and the LED2 indicator lights out, indicating that the service unit connector is not inserted into the designated target service port.
The specific implementation method comprises the following steps:
a. the management system is communicated with an indicator light LED1 of a corresponding target service port through the wiring board main control module, an LED1 indicator light is lightened, and a field worker inserts the service unit connector into the target service port according to the prompt of the LED1 indicator light;
turning on the illuminated LED1, inserting the service unit connector into the target service port as indicated by LED 1;
b. the staff inserts the service unit connector and the detection unit connector with the corresponding fiber bragg grating into the service port and the detection port with the optical filter in a pairwise correspondence manner, the fiber bragg grating 21 in the detection unit connector senses the transmission of the detection light, transmits the identification light with a specific wavelength, and then transmits the identification light into the detection port as shown in fig. 3;
matching the service unit connector with the detection unit connector and then inserting the service unit connector into a target service port and a detection port;
c. the transmitted identification light enters the detection port, the detection port comprises an optical filter 31 with the same characteristic as the fiber bragg grating in the detection unit connector, when the light beam enters the optical filter 31, the identification light with a specific wavelength can successfully pass through the optical filter 31 and can be detected by the photoelectric detection module 32;
when the LED2 is lit, the match is successful;
d. the photoelectric detector 321 converts the optical signal into an electrical signal, and transmits the electrical signal to the logic control circuit 322, the logic control circuit senses the electrical signal, and outputs an identification electrical signal to the main control module through processing, the main control module switches on the LED2 indicator according to the level pulse, which indicates that the matching is successful, and if the LED2 indicator is not switched on, it indicates that the photoelectric detector does not detect the identification light, the matching is failed, and an incorrect service optical fiber connector is inserted.
In summary, the embodiment of the present invention utilizes the uniqueness of the transmission wavelength of the specific fiber grating to effectively detect whether the fiber insertion is correct; the accuracy of the fiber insertion is visually communicated to the constructor through the form of indication of the indicator light, and the technical common knowledge indicates that the invention can be realized by other embodiments without departing from the spirit or essential characteristics of the constructor. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of or equivalence to the invention are intended to be embraced therein.
Claims (9)
1. The optical distribution unit based on the fiber bragg grating is characterized by comprising a main control module, a connecting unit, an optical splitter and a signal source which are sequentially connected in series, wherein the main control module is connected with a management system, the connecting unit comprises a service unit and a detection unit, the service unit comprises a service optical fiber, a service unit connector and a service port, the service port is arranged on the service unit connector, the service optical fiber is connected with the service unit connector and the optical splitter, the detection unit comprises a detection optical fiber, a detection unit connector, a detection port and an indicator lamp, the detection port is arranged on the detection unit connector, the detection optical fiber is connected with the detection unit connector and the optical splitter, and the indicator lamp is arranged on the detection port.
2. The fiber grating-based optical distribution unit of claim 1, wherein: the signal source comprises service signal light and detection signal light which work at different wavelengths.
3. The fiber grating-based optical distribution unit of claim 1, wherein: and the detection unit connector is provided with a fiber grating for transmitting a specific wavelength.
4. The fiber grating-based optical distribution unit of claim 1, wherein: the detection port comprises an optical filter transmitting a specific wavelength and a photoelectric detection module.
5. The fiber grating-based optical distribution unit of claim 4, wherein: the indicator light includes an LED1 for directing a targeted service port requiring provisioning of a service and an LED2 for detecting whether the service unit connector is properly plugged into a particular targeted service port.
6. The fiber grating-based optical distribution unit of claim 4, wherein: the optical filter comprises one of fiber bragg grating, a dielectric film, an F-P interferometer and a Mach-Zehnder interferometer.
7. The fiber grating-based optical distribution unit of claim 5, wherein: the photoelectric detection module converts the identification light signal passing through the optical filter into an electric signal and transmits the electric signal to the main control module so as to switch on the LED 2.
8. The method of claims 1-7 for wiring a fiber grating-based optical distribution unit: the method comprises the following steps:
turning on the illuminated LED1, inserting the service unit connector into the target service port as indicated by LED 1;
matching the service unit connector with the detection unit connector and then inserting the service unit connector into a target service port and a detection port;
the match is successful when the LED2 is lit.
9. The optical distribution method based on fiber grating as claimed in claim 8, wherein: the method for lighting the LED1 comprises the following steps:
the management system switches on the indicator light LED1 of the corresponding target service port through the wiring board main control module, and lights up the LED 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910317788.1A CN111830649A (en) | 2019-04-19 | 2019-04-19 | Optical distribution unit based on fiber bragg grating and distribution method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910317788.1A CN111830649A (en) | 2019-04-19 | 2019-04-19 | Optical distribution unit based on fiber bragg grating and distribution method |
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| CN111830649A true CN111830649A (en) | 2020-10-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113852422A (en) * | 2021-11-16 | 2021-12-28 | 中国电信股份有限公司 | System and method for identifying connection relationship between equipment port and optical cable core |
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| JP2006039165A (en) * | 2004-07-27 | 2006-02-09 | Shoden Corp | Wiring board |
| KR20130068304A (en) * | 2011-12-15 | 2013-06-26 | (주)럭스콤 | Coded fbg used optical connector |
| CN104932065A (en) * | 2015-06-29 | 2015-09-23 | 烽火通信科技股份有限公司 | Optical fiber system with PCB-free optical fiber wiring module and optical fiber wiring method |
| JP2015176564A (en) * | 2014-03-18 | 2015-10-05 | 日本電気株式会社 | Connection guidance system and connection guidance method |
| CN105792029A (en) * | 2014-12-24 | 2016-07-20 | 中兴通讯股份有限公司 | Intelligent ODN identification system and device |
| CN105823494A (en) * | 2016-03-17 | 2016-08-03 | 北京中科光讯科技有限公司 | System and method of intelligently recognizing optical cable |
-
2019
- 2019-04-19 CN CN201910317788.1A patent/CN111830649A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006039165A (en) * | 2004-07-27 | 2006-02-09 | Shoden Corp | Wiring board |
| KR20130068304A (en) * | 2011-12-15 | 2013-06-26 | (주)럭스콤 | Coded fbg used optical connector |
| JP2015176564A (en) * | 2014-03-18 | 2015-10-05 | 日本電気株式会社 | Connection guidance system and connection guidance method |
| CN105792029A (en) * | 2014-12-24 | 2016-07-20 | 中兴通讯股份有限公司 | Intelligent ODN identification system and device |
| CN104932065A (en) * | 2015-06-29 | 2015-09-23 | 烽火通信科技股份有限公司 | Optical fiber system with PCB-free optical fiber wiring module and optical fiber wiring method |
| CN105823494A (en) * | 2016-03-17 | 2016-08-03 | 北京中科光讯科技有限公司 | System and method of intelligently recognizing optical cable |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113852422A (en) * | 2021-11-16 | 2021-12-28 | 中国电信股份有限公司 | System and method for identifying connection relationship between equipment port and optical cable core |
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Application publication date: 20201027 |