CN105610513A - Chaotic laser transmitter for communication cable fault detection - Google Patents
Chaotic laser transmitter for communication cable fault detection Download PDFInfo
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- CN105610513A CN105610513A CN201510959515.9A CN201510959515A CN105610513A CN 105610513 A CN105610513 A CN 105610513A CN 201510959515 A CN201510959515 A CN 201510959515A CN 105610513 A CN105610513 A CN 105610513A
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- fiber grating
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- chaotic laser
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/50—Transmitters
- H04B10/501—Structural aspects
- H04B10/503—Laser transmitters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
- H04B10/077—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using a supervisory or additional signal
- H04B10/0771—Fault location on the transmission path
Abstract
The invention relates to the technology of communication cable fault detection, specifically a chaotic laser transmitter for communication cable fault detection. The invention solves problems that the low-frequency energy of the chaotic laser generated by a conventional chaotic laser generation device is low in percentage, and the frequency spectrum flatness is poor. The transmitter comprises a semiconductor laser, a polarization controller, a 1*2 main fiber coupler, an optical attenuator, a fiber feedback mirror, an optical isolator, a light amplifier, and a low-frequency enhancement device. An output end of the semiconductor laser is connected with the input end of the polarization controller. The output end of the polarization controller is connected with the input end of the 1*2 main fiber coupler. The two output ends of the 1*2 main fiber coupler are respectively connected with the input end of the optical attenuator and the input end of the optical isolator. The output end of the optical attenuator is connected with the input end of the fiber feedback mirror. The transmitter is suitable for the detection of a communication cable fault.
Description
Technical field
The present invention relates to the chaotic laser light generation technology in communication cabinet fault detection, specifically a kind of chaotic laser light emitter detecting for communication cabinet fault.
Background technology
In recent years, communication cable, as the transmission medium of control signal, communication signal, has been widely used in the equipment such as aircraft, boats and ships, motor-car, spaceship. In practice process, communication cable can be due to former thereby generation faults such as its working environment is special, aging circuits, and the lighter quits work electrical equipment, and severe one has an accident aircraft, boats and ships, motor-car, spaceship etc. Therefore, the accurate detection of communication cabinet fault is extremely important. At present, the detection of communication cabinet fault mainly realizes by reflection measurement method, and the generation of chaotic laser light is to utilize reflection measurement method to realize the primary link (WangA of high accuracy, long distance detection, ZhangM, XuH, etal.Locationofwirefaultsusingchaoticsignal[J] .ElectronDeviceLetters, IEEE, 2011,32 (3): 372-374.).
Existing chaotic laser light generation device is because self structure is limit, the chaotic laser light producing exists low frequency energy accounting low, the problem that frequency spectrum flatness is poor, bring thus following problem: in reflection measurement method, because the electronic response device of processing chaotic laser light is low pass device (only allowing the low frequency energy in chaotic laser light to pass through), cause only having used in practical application the fraction energy of chaotic laser light, cause thus the capacity usage ratio of chaotic laser light low, thereby cause the low (Xu Hang of fault detect accuracy of reflection measurement method, Wang Anbang, Han Xiaohong, Deng. the breakpoint of chaotic signal correlation measurement dielectric transmission line and impedance mismatching [J]. Acta Physica Sinica, 2011, 60 (9): 142-147.). based on this, be necessary to invent a kind of brand-new chaotic laser light generation device, the problem that chaotic laser light low frequency energy accounting is low, frequency spectrum flatness is poor being produced to solve existing chaotic laser light generation device.
Summary of the invention
The problem that chaotic laser light low frequency energy accounting is low, frequency spectrum flatness is poor that the present invention produces in order to solve existing chaotic laser light generation device, provides a kind of chaotic laser light emitter detecting for communication cabinet fault.
The present invention adopts following technical scheme to realize: a kind of chaotic laser light emitter detecting for communication cabinet fault, comprises semiconductor laser, Polarization Controller, 1 × 2 main fiber coupler, optical attenuator, optical fiber feedback mirrors, optoisolator, image intensifer, low-frequency enhancement devices; Wherein, the output of semiconductor laser and the input of Polarization Controller are connected; The output of Polarization Controller is connected with the input of 1 × 2 main fiber coupler; Two outputs of 1 × 2 main fiber coupler are connected with the input of optical attenuator and the input of optoisolator respectively; The output of optical attenuator is connected with the input of optical fiber feedback mirrors; The output of optoisolator is connected with the input of image intensifer; The output of image intensifer is connected with the input of low-frequency enhancement devices.
Specific works process is as follows: the continuous light of semiconductor laser output arrives optical fiber feedback mirrors through Polarization Controller, 1 × 2 main fiber coupler, optical attenuator successively, and return to semiconductor laser along original optical path after the reflection of optical fiber feedback mirrors, then noise spectra of semiconductor lasers causes disturbance, makes thus semiconductor laser output spectrum unevenness and presents the logical chaotic laser light of composing shape of band. This chaotic laser light arrives image intensifer through Polarization Controller, 1 × 2 main fiber coupler, optoisolator successively, and be amplified into low-frequency enhancement devices through image intensifer, the chaotic laser light that then output low frequency energy accounting is high after low-frequency enhancement devices filtering, frequency spectrum flatness is good.
Based on said process, compared with existing chaotic laser light generation device, a kind of chaotic laser light emitter detecting for communication cabinet fault of the present invention is by adopting brand new, having produced low frequency energy accounting, higher (the low frequency energy accounting in 1GHz bandwidth has increased by 30 times of left and right, low frequency energy accounting in 3GHz bandwidth has increased by 6 times of left and right), frequency spectrum flatness is better (in can remain on ± 1.5dB of the frequency spectrum flatness in 3GHz, the lifting amplitude of frequency spectrum flatness exceedes 15dB, chaotic laser light as shown in Figure 3), significantly improve thus the capacity usage ratio of chaotic laser light, thereby significantly improve the fault detect accuracy of reflection measurement method.
The present invention is rational in infrastructure, it is ingenious to design, and efficiently solves the problem that chaotic laser light low frequency energy accounting is low, frequency spectrum flatness is poor that existing chaotic laser light generation device produces, and is applicable to the detection of communication cabinet fault.
Brief description of the drawings
Fig. 1 is the first structural representation of the present invention.
Fig. 2 is the second structural representation of the present invention.
Fig. 3 is the spectrum diagram of the chaotic laser light that produces of the present invention.
In figure: 1-semiconductor laser, 2-Polarization Controller, 3-1 × 2 main fiber coupler, 4-optical attenuator, 5-optical fiber feedback mirrors, 6-optoisolator, 7-image intensifer, 8-fiber grating, 9-the one 1 × 2 is from fiber coupler, and 10-the 21 × 2 is from fiber coupler, 11-the first fiber grating, 12-the second fiber grating, 13-the 3rd fiber grating.
Detailed description of the invention
Embodiment mono-
The chaotic laser light emitter detecting for communication cabinet fault, comprises semiconductor laser 1, Polarization Controller 2,1 × 2 main fiber coupler 3, optical attenuator 4, optical fiber feedback mirrors 5, optoisolator 6, image intensifer 7, low-frequency enhancement devices; Wherein, the output of semiconductor laser 1 is connected with the input of Polarization Controller 2; The output of Polarization Controller 2 is connected with the input of 1 × 2 main fiber coupler 3; Two outputs of 1 × 2 main fiber coupler 3 are connected with the input of optical attenuator 4 and the input of optoisolator 6 respectively; The output of optical attenuator 4 is connected with the input of optical fiber feedback mirrors 5; The output of optoisolator 6 is connected with the input of image intensifer 7; The output of image intensifer 7 is connected with the input of low-frequency enhancement devices.
In the present embodiment, as shown in Figure 1, described low-frequency enhancement devices comprises fiber grating 8; The output of image intensifer 7 is connected with the input of fiber grating 8. When work, chaotic laser light is amplified into fiber grating through image intensifer, the chaotic laser light that then output low frequency energy accounting is high after fiber grating filtering, frequency spectrum flatness is good.
When concrete enforcement, the frequency detuning of the centre wavelength of the centre wavelength of fiber grating 8 and semiconductor laser 1 is ± 50GHz in, side mode suppression ratio >=20dB, and live width≤300pm. The three dB bandwidth of fiber grating 8 is 200pm. Fiber grating is also used (IEEEJ.Lightw.Technol. in WDM-PON Network Fault Detection, Vol.30,3420,2012), but, in the application of WDM-PON, fiber grating is the selector as a wavelength, and object is to make flashlight mate with the wave band of each branch road of network, does not relate to the change to the spectral Energy distribution of signal.
Embodiment bis-
The chaotic laser light emitter detecting for communication cabinet fault, comprises semiconductor laser 1, Polarization Controller 2,1 × 2 main fiber coupler 3, optical attenuator 4, optical fiber feedback mirrors 5, optoisolator 6, image intensifer 7, low-frequency enhancement devices; Wherein, the output of semiconductor laser 1 is connected with the input of Polarization Controller 2; The output of Polarization Controller 2 is connected with the input of 1 × 2 main fiber coupler 3; Two outputs of 1 × 2 main fiber coupler 3 are connected with the input of optical attenuator 4 and the input of optoisolator 6 respectively; The output of optical attenuator 4 is connected with the input of optical fiber feedback mirrors 5; The output of optoisolator 6 is connected with the input of image intensifer 7; The output of image intensifer 7 is connected with the input of low-frequency enhancement devices.
In the present embodiment, as shown in Figure 2, described low-frequency enhancement devices comprises that the one 1 × 2 from fiber coupler the 9, the 21 × 2 from fiber coupler 10, the first fiber grating 11, the second fiber grating 12, the 3rd fiber grating 13; The output of image intensifer 7 is connected from the input of fiber coupler 9 with the one 1 × 2; The one 1 × 2 is connected with the input of the 21 × 2 input from fiber coupler 10 and the first fiber grating 11 respectively from two outputs of fiber coupler 9; The 21 × 2 two outputs from fiber coupler 10 are connected with the input of the second fiber grating 12 and the input of the 3rd fiber grating 13 respectively. When work, chaotic laser light is amplified into the one 1 × 2 from fiber coupler through image intensifer, is then divided into two-way through the one 1 × 2 from fiber coupler: the first via chaotic laser light that output low frequency energy accounting is high after the first fiber grating filtering, frequency spectrum flatness is good; The second tunnel is divided into two-way through the 21 × 2 again from fiber coupler: the first via chaotic laser light that output low frequency energy accounting is high after the second fiber grating filtering, frequency spectrum flatness is good; The second tunnel chaotic laser light that output low frequency energy accounting is high after the 3rd fiber grating filtering, frequency spectrum flatness is good. In this process, if the bandwidth of the first fiber grating, the second fiber grating, the 3rd fiber grating is set to different value, can output spectrum flatness difference, all adjustable chaotic laser lights of low frequency energy accounting and spectral bandwidth, make thus chaotic laser light be applicable to the capture card of different bandwidth, thereby further improved the capacity usage ratio of chaotic laser light.
When concrete enforcement, in the be ± 50GHz of frequency detuning of the centre wavelength of the first fiber grating 11, the centre wavelength of the second fiber grating 12, the centre wavelength of the 3rd fiber grating 13 and the centre wavelength of semiconductor laser 1, side mode suppression ratio >=20dB, and live width≤300pm. The three dB bandwidth of the first fiber grating 11 is 50pm. The three dB bandwidth of the second fiber grating 12 is 150pm. The three dB bandwidth of the 3rd fiber grating 13 is 250pm, and coupling ratio is 50:50. Fiber grating is also used (IEEEJ.Lightw.Technol. in WDM-PON Network Fault Detection, Vol.30,3420,2012), but, in the application of WDM-PON, fiber grating is the selector as a wavelength, and object is to make flashlight mate with the wave band of each branch road of network, does not relate to the change to the spectral Energy distribution of signal.
Claims (5)
1. the chaotic laser light emitter detecting for communication cabinet fault, is characterized in that: comprise semiconductor laser (1), Polarization Controller (2), 1 × 2 main fiber coupler (3), optical attenuator (4), optical fiber feedback mirrors (5), optoisolator (6), image intensifer (7), low-frequency enhancement devices; Wherein, the output of semiconductor laser (1) is connected with the input of Polarization Controller (2); The output of Polarization Controller (2) is connected with the input of 1 × 2 main fiber coupler (3); Two outputs of 1 × 2 main fiber coupler (3) are connected with the input of optical attenuator (4) and the input of optoisolator (6) respectively; The output of optical attenuator (4) is connected with the input of optical fiber feedback mirrors (5); The output of optoisolator (6) is connected with the input of image intensifer (7); The output of image intensifer (7) is connected with the input of low-frequency enhancement devices.
2. a kind of chaotic laser light emitter detecting for communication cabinet fault according to claim 1, is characterized in that: described low-frequency enhancement devices comprises fiber grating (8); The output of image intensifer (7) is connected with the input of fiber grating (8).
3. a kind of chaotic laser light emitter detecting for communication cabinet fault according to claim 1, is characterized in that: described low-frequency enhancement devices comprises that the one 1 × 2 from fiber coupler (9), the 21 × 2 from fiber coupler (10), the first fiber grating (11), the second fiber grating (12), the 3rd fiber grating (13); The output of image intensifer (7) is connected from the input of fiber coupler (9) with the one 1 × 2; The one 1 × 2 two outputs from fiber coupler (9) are connected with the input of the 21 × 2 input from fiber coupler (10) and the first fiber grating (11) respectively; The 21 × 2 two outputs from fiber coupler (10) are connected with the input of the second fiber grating (12) and the input of the 3rd fiber grating (13) respectively.
4. a kind of chaotic laser light emitter detecting for communication cabinet fault according to claim 2, it is characterized in that: the frequency detuning of the centre wavelength of the centre wavelength of fiber grating (8) and semiconductor laser (1) is in ± 50GHz, side mode suppression ratio >=20dB, and live width≤300pm.
5. a kind of chaotic laser light emitter detecting for communication cabinet fault according to claim 3, it is characterized in that: in the be ± 50GHz of frequency detuning of the centre wavelength of the first fiber grating (11), the centre wavelength of the second fiber grating (12), the centre wavelength of the 3rd fiber grating (13) and the centre wavelength of semiconductor laser (1), side mode suppression ratio >=20dB, and live width≤300pm.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106169950A (en) * | 2016-07-21 | 2016-11-30 | 西南大学 | Distance laser chaos synchronizer based on all-fiber |
| CN106452601A (en) * | 2016-09-19 | 2017-02-22 | 西安电子科技大学 | Multiway time delay-free characteristic laser chaos signal generation device based on heterogeneous time delay coupling ring network |
| CN110797745A (en) * | 2019-11-12 | 2020-02-14 | 太原理工大学 | Broadband chaos generating device without time delay characteristic |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1384924A (en) * | 2000-04-24 | 2002-12-11 | 康宁股份有限公司 | Amplitude tunable filter |
| CN1595275A (en) * | 2004-07-09 | 2005-03-16 | 吉林大学 | Gain flattened equalizer of erbium doped fiber amplifier based on chirped fiber grating |
| JP2014052946A (en) * | 2012-09-10 | 2014-03-20 | Nippon Telegr & Teleph Corp <Ntt> | High speed chaos optical signal generation optical circuit |
-
2015
- 2015-12-21 CN CN201510959515.9A patent/CN105610513B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1384924A (en) * | 2000-04-24 | 2002-12-11 | 康宁股份有限公司 | Amplitude tunable filter |
| CN1595275A (en) * | 2004-07-09 | 2005-03-16 | 吉林大学 | Gain flattened equalizer of erbium doped fiber amplifier based on chirped fiber grating |
| JP2014052946A (en) * | 2012-09-10 | 2014-03-20 | Nippon Telegr & Teleph Corp <Ntt> | High speed chaos optical signal generation optical circuit |
Non-Patent Citations (2)
| Title |
|---|
| ANBANG WANG 等: "Generation of flat-spectrum wideband chaos by fiber ring resonator", 《APPLIED PHYSICS LETTERS》 * |
| 王安帮: "宽带混沌产生与混沌光时域反射测量", 《中国博士学位论文全文数据库 基础科学辑》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106169950A (en) * | 2016-07-21 | 2016-11-30 | 西南大学 | Distance laser chaos synchronizer based on all-fiber |
| CN106169950B (en) * | 2016-07-21 | 2023-08-18 | 西南大学 | Long-distance laser chaos synchronous device based on all optical fibers |
| CN106452601A (en) * | 2016-09-19 | 2017-02-22 | 西安电子科技大学 | Multiway time delay-free characteristic laser chaos signal generation device based on heterogeneous time delay coupling ring network |
| CN110797745A (en) * | 2019-11-12 | 2020-02-14 | 太原理工大学 | Broadband chaos generating device without time delay characteristic |
| CN110797745B (en) * | 2019-11-12 | 2021-09-17 | 太原理工大学 | Broadband chaos generating device without time delay characteristic |
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| CN105610513B (en) | 2017-10-10 |
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