Polarization chaos distributed sensing with a semiconductor fiber ring laser

Fang, Nian; Shan, Chao; Wang, Lutang; Huang, Zhaoming

doi:10.1109/cleopr.2009.5292711

Cited by 4 publications

(2 citation statements)

References 3 publications

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“…Due to the sensitivity to initial conditions, the chaotic fiber ring laser (CFRL) can be used as a distributed optical fiber sensor 3,4 . Experimental results demonstrate that the sensitivity of the CFRL sensing system is too low to detect some weak external disturbances.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation of sensitivity improvement of chaotic fiber ring laser sensing system with embedded Sagnac interferometer

et al. 2014

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The sensitivity of optical fiber ring laser distributed sensing system based on the mechanism of chaotic system's sensitivity to initial conditions is low. Fiber interferometer distributed sensing system's sensitivity is high. In this paper, a distributed sensing system with the structure of chaotic fiber ring laser (CFRL) embedding a Sagnac loop interferometer is proposed by combining the property of zero order interference of chaotic light and reciprocity of Sagnac interferometer. It can be used to improve the sensitivity of CFRL sensing system. According to the changes of temporal waveforms, frequency spectrums and autocorrelation functions out of the systems under the same disturbance, the sensitivities are compared between the improved system and the original CFRL system. Experimental results show that the sensitivity of the proposed system is higher than that of the CFRL system. In addition, the response properties of the system under the same amplitude and different frequencies of disturbance signals are measured. The results show that the system can detect the disturbances in the frequency range from 10 kHz to 300 kHz and the responses are flat. The detection abilities to weak signals with different amplitudes are compared. With the rising of disturbance signals amplitudes under the same frequency, the autocorrelation amplitudes of the interference signals increase. In conclusion, the proposed system improves the sensitive to weak disturbance signals with different amplitudes and frequencies. The frequency and amplitude of the disturbance signals can be obtained by the frequency spectrum and autocorrelation function of the waveform of the system.

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Section: Introductionmentioning

confidence: 99%

Experimental investigation of sensitivity improvement of chaotic fiber ring laser sensing system with embedded Sagnac interferometer

et al. 2014

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“…Nian Fang et al [2][3][4] proposed a chaos fiber-optic fence system based on a semiconductor fiber ring laser. A numerous of chaos data has to be acquired in real time at high speed to find the time of a chaos waveform change caused by an intrusion with cross-correlation operation, then locate accurately the intruder.…”

Section: Introductionmentioning

confidence: 99%

DAQ application of PC oscilloscope for chaos fiber-optic fence system based on LabVIEW

Fang

Wang

et al. 2011

Optical Sensors and Biophotonics III

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In order to obtain simultaneously high sample rate and large buffer in data acquisition (DAQ) for a chaos fiber-optic fence system, we developed a double-channel high-speed DAQ application of a digital oscilloscope of PicoScope 5203 based on LabVIEW. We accomplished it by creating call library function (CLF) nodes to call the DAQ functions in the two dynamic link libraries (DLLs) of PS5000.dll and PS5000wrap.dll provided by Pico Technology Company. The maximum real-time sample rate of the DAQ application can reach 1GS/s. We can control the resolutions of the application at the sample time and data amplitudes by changing their units in the block diagram, and also control the start and end times of the sampling operations. The experimental results show that the application has enough high sample rate and large buffer to meet the demanding DAQ requirements of the chaos fiber-optic fence system.

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Method to Determine Length and Starting Point of Waveform Frame from Chaos Time Series in Sensing Applications

Fang

Wang

et al. 2011

2011 Fourth International Conference on Intelligent Computation Technology and Automation

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Polarization chaos distributed sensing with a semiconductor fiber ring laser

Cited by 4 publications

References 3 publications

Experimental investigation of sensitivity improvement of chaotic fiber ring laser sensing system with embedded Sagnac interferometer

Experimental investigation of sensitivity improvement of chaotic fiber ring laser sensing system with embedded Sagnac interferometer

DAQ application of PC oscilloscope for chaos fiber-optic fence system based on LabVIEW

Method to Determine Length and Starting Point of Waveform Frame from Chaos Time Series in Sensing Applications

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