CN206993118U - A kind of optical time domain reflection test device for realizing multi-channel optical fibre test - Google Patents
A kind of optical time domain reflection test device for realizing multi-channel optical fibre test Download PDFInfo
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- CN206993118U CN206993118U CN201720780795.1U CN201720780795U CN206993118U CN 206993118 U CN206993118 U CN 206993118U CN 201720780795 U CN201720780795 U CN 201720780795U CN 206993118 U CN206993118 U CN 206993118U
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- time domain
- optical fibre
- domain reflection
- channel optical
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Abstract
The utility model provides a kind of optical time domain reflection test device for realizing multi-channel optical fibre test, the device includes laser pulse generator, fiber coupler, photon detection counter and Multichannel photoswitch, the laser pulse generator, photon detection counter are connected with fiber coupler respectively, and fiber coupler is connected with Multichannel photoswitch.The utility model increases a multi-channel optical fibre switch in device interior, and switch is controlled by control interface, multiple access is realized, multi-channel optical fibre is detected successively automatically, easy to operate, improves detection efficiency.
Description
Technical field
Fiber laser arrays field is the utility model is related to, more particularly, to a kind of optical time domain reflection for realizing multi-channel optical fibre test
Test device.
Background technology
OTDR Optical Time Domain Reflectometers, it is by Rayleigh scattering and Fresnel when being transmitted in a fiber using optical pulse
The optoelectronic integration instrument of caused signal backwards and manufactured accurate measurement is reflected, it is widely used in fibre circuit
Construction, in safeguarding, a series of measurement work such as length, transmission attenuation, joint decay and the fault location of optical fiber can be carried out.
For using the fibre-optic transmission system (FOTS) on aircraft, naval vessel, because fiber optic network distance is shorter, connection is more multiple
It is miscellaneous, checked for the rapid and simple optical fiber state to airborne avionics, ship's network fibre circuit, realize quick inspection and event
Barrier positioning is, it is necessary to high-precision OTDR detectors, it is desirable to can be pin-pointed to the trouble point of Centimeter Level, so as to on-call maintenance more
Change, ensure system reliable and stable work and aircraft, warship safety operation.
The inside of current High-precision O TDR detection devices is connected by a fiber coupler with tested optical fiber, only one
Fiber laser arrays interface, it can only once detect an optical fiber.For fiber optic network on airborne, naval vessel, the function of being connected on network is set
Standby more, fiber optic network length is smaller, and fiber optic network networking is complicated, when the detection of progress equipment is safeguarded at the scene every time, one-time detection
One optical fiber interface, after having detected and need manually to remove fibre-optical splice, be connected on another tested optical fiber interface, band
Come complex operation, the low problem of detection efficiency.
Utility model content
The purpose of this utility model is：The problem of existing for prior art, there is provided one kind realizes that multi-channel optical fibre is tested
Optical time domain reflection test device, solve the problems, such as that existing OTDR detection devices can only once detect an optical fiber.
The purpose of this utility model is achieved through the following technical solutions：
A kind of optical time domain reflection test device for realizing multi-channel optical fibre test, the device include laser pulse generator, light
Fine coupler, photon detection counter and Multichannel photoswitch, the laser pulse generator, photon detection counter respectively with light
Fine coupler connection, fiber coupler are connected with Multichannel photoswitch.
Further, the optical fiber interface number of the Multichannel photoswitch is 2,4,8,16 or 32.
Further, laser driver is provided between the laser pulse generator and fiber coupler.
Further, SPDA detectors, SPDA detections are provided between the photon detection counter and fiber coupler
Device is connected with laser pulse generator.
Further, the photon detection counter is connected with signal generator.
Further, signal generator is connected with display.
Compared with prior art, the utility model causes the original only High-precision O TDR detections of optical fiber interface all the way
Instrument, possesses multi-channel optical fibre interface, detection will be in use, can will more according to multi-channel optical fibre situation in the tested network in scene at the scene
Individual tested optical fiber is disposably consecutively connected in the test optical fiber connecting interface of High-precision O TDR detectors, then to per all the way
Tested optical fiber is detected successively, can all be preserved per fiber laser arrays result all the way in instrument.
Brief description of the drawings
Fig. 1 is using state structure diagram of the present utility model；
Fig. 2 is functional block diagram of the present utility model.
Embodiment
The utility model is described in detail with specific embodiment below in conjunction with the accompanying drawings.
Embodiment
The problem of the utility model is found in the application for traditional OTDR Optical Time Domain Reflectometers, in original high accuracy
In OTDR detectors, connecing tested optical fiber interface in fiber coupler increases 1*N Multichannel photoswitch (including individually all the way
And multichannel), photoswitch connects fiber coupler all the way, and the multichannel interface of photoswitch is as tested optical fiber interface.Pass through control interface
Photoswitch is controlled, realizes multiple access, multi-channel optical fibre is detected successively automatically, it is easy to operate, improve detection
Efficiency.
A kind of as shown in figure 1, optical time domain reflection test device bag for realizing multi-channel optical fibre test provided by the utility model
Include laser pulse generator, fiber coupler, photon detection counter and Multichannel photoswitch.Laser pulse generator, photon are visited
Survey counter to be connected with fiber coupler respectively, fiber coupler is connected with Multichannel photoswitch.Multichannel photoswitch and tested optical fiber
Connection.
It is illustrated in fig. 2 shown below, to possess the functional block diagram of the High-precision O TDR detectors of multi-way detecting function, wherein：
1 is the 1*N Multichannel photoswitchs that the present utility model proposes, the 1 of switch is connected to the coupler of gauge internal, opens
The N of pass is connected to the N roads optical fiber interface of instrument, and N can be 2,4,8,16,32 tunnels etc., and the intelligent acess of the tested network in outside arrives
On the interface of instrument, N roads tested optical fiber can be accessed simultaneously；
2 be the fiber coupler of instrument, coupler input for the output of laser driver laser signal, the one of coupler
Road is output in switch and is output to through interface in tested optical fiber, while signal is reflected in tested optical fiber and is entered through switch interface
It is output to by coupler in detector 6；
3 be laser driver, is connected between laser pulse generator and fiber coupler, for being carried out to laser signal
Amplification；
4 be laser pulse generator, for producing Ultra-short pulse laser signal, is used to examine for High-precision O TDR detectors
Survey Centimeter Level optical-fiber line fault, it is desirable to which pulse width is less than 1ns；
5 be single-photon detector；
6 be photon detection counter.Photon detection counter is connected with signal generator, and signal generator connects with display
Connect.
The utility model high accuracy multichannel OTDR detectors are designed with multi-channel optical fibre interface, per optical fiber interface can all the way
For the tested optical fiber all the way in external fiber optic network, multichannel interface is connected on the 1*N Multichannel photoswitchs of gauge internal, N=2,
4th, 8,16,32 etc., current switch connection is all set when instrument is tested every time is that interface all the way, is then detected according to OTDR
Journey, laser narrow pulse signal is produced by impulse generator, is input to after laser driver amplifies in coupler, then through coupler
It is output in photoswitch, according to the switch way of setting, the light pulse signal sent, which enters, sets the n-th road optical fiber interface, warp
Fiber-optic signal is entered in tested optical fiber after optical fiber interface, while the backscattering come, reflection are reversely sent back through tested optical fiber
Signal is after optical fiber interface connects with the n-th road photoswitch set, and reverse signal is entered in coupler, and the reverse signal is by coupling
After clutch coupling be output in single-photon detector SPDA, detector by the reverse dim light subsignal detected through opto-electronic conversion into
Be sent to after electric signal in counter, after carrying out counting processing according to system synchronization, finally by count results through system storage at
Uniformly it is shown in after reason on indicator screen, can be according to the joint in the accurate detection fiber circuit of reverse signal, transmission attenuation, event
Barrier point etc.；
After (the n-th tunnel) all the way tested optical fiber line test of configuration is completed, can carry out configuration again is cut switch
Change to other all the way on (m roads), continue fibre circuit detection according to flow above, the process can be by instrument system
By software design patterns, switch switching is automatically configured, the tested optical fiber circuit of access is detected successively all the way.
Preferred embodiment of the present utility model is the foregoing is only, not to limit the utility model, should be referred to
Go out, all made within spirit of the present utility model and principle all any modification, equivalent and improvement etc., all should include
Within the scope of protection of the utility model.
Claims (6)
1. a kind of optical time domain reflection test device for realizing multi-channel optical fibre test, it is characterised in that the device includes laser pulse
Generator, fiber coupler, photon detection counter and Multichannel photoswitch, the laser pulse generator, photon detection count
Device is connected with fiber coupler respectively, and fiber coupler is connected with Multichannel photoswitch.
A kind of 2. optical time domain reflection test device for realizing multi-channel optical fibre test according to claim 1, it is characterised in that
The optical fiber interface number of the Multichannel photoswitch is 2,4,8,16 or 32.
A kind of 3. optical time domain reflection test device for realizing multi-channel optical fibre test according to claim 1, it is characterised in that
Laser driver is provided between the laser pulse generator and fiber coupler.
A kind of 4. optical time domain reflection test device for realizing multi-channel optical fibre test according to claim 1, it is characterised in that
SPDA detectors, the SPDA detectors and laser pulse generator are provided between the photon detection counter and fiber coupler
Connection.
A kind of 5. optical time domain reflection test device for realizing multi-channel optical fibre test according to claim 1, it is characterised in that
The photon detection counter is connected with signal generator.
A kind of 6. optical time domain reflection test device for realizing multi-channel optical fibre test according to claim 1, it is characterised in that
Signal generator is connected with display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720780795.1U CN206993118U (en) | 2017-06-30 | 2017-06-30 | A kind of optical time domain reflection test device for realizing multi-channel optical fibre test |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720780795.1U CN206993118U (en) | 2017-06-30 | 2017-06-30 | A kind of optical time domain reflection test device for realizing multi-channel optical fibre test |
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| CN206993118U true CN206993118U (en) | 2018-02-09 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109347544A (en) * | 2018-07-26 | 2019-02-15 | 桂林电子科技大学 | Fiber optical time domain reflection instrument based on extremely low noise near-infrared single photon detection system |
| CN109831248A (en) * | 2019-03-01 | 2019-05-31 | 成都成电光信科技股份有限公司 | The synthesis optical fiber inspection device and method of integrated FC optical fiber link and Network Check |
| CN110120835A (en) * | 2019-06-28 | 2019-08-13 | 电子科技大学 | A kind of outer gate single photon detection optical time domain reflection measurement method |
| CN113224640A (en) * | 2021-07-08 | 2021-08-06 | 成都成电光信科技股份有限公司 | Drive circuit of laser and drive method thereof |
| CN113364518A (en) * | 2021-05-31 | 2021-09-07 | 贵州电网有限责任公司 | Multi-path optical fiber attenuation test system |
-
2017
- 2017-06-30 CN CN201720780795.1U patent/CN206993118U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109347544A (en) * | 2018-07-26 | 2019-02-15 | 桂林电子科技大学 | Fiber optical time domain reflection instrument based on extremely low noise near-infrared single photon detection system |
| CN109347544B (en) * | 2018-07-26 | 2021-12-07 | 传周半导体科技(上海)有限公司 | Optical fiber time domain reflectometer based on ultra-low noise near-infrared single photon detection system |
| CN109831248A (en) * | 2019-03-01 | 2019-05-31 | 成都成电光信科技股份有限公司 | The synthesis optical fiber inspection device and method of integrated FC optical fiber link and Network Check |
| CN110120835A (en) * | 2019-06-28 | 2019-08-13 | 电子科技大学 | A kind of outer gate single photon detection optical time domain reflection measurement method |
| CN110120835B (en) * | 2019-06-28 | 2021-06-04 | 电子科技大学 | External gate control single photon detection optical time domain reflection measurement method |
| CN113364518A (en) * | 2021-05-31 | 2021-09-07 | 贵州电网有限责任公司 | Multi-path optical fiber attenuation test system |
| CN113224640A (en) * | 2021-07-08 | 2021-08-06 | 成都成电光信科技股份有限公司 | Drive circuit of laser and drive method thereof |
| CN113224640B (en) * | 2021-07-08 | 2021-12-28 | 成都成电光信科技股份有限公司 | Drive circuit of laser and drive method thereof |
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