SUN Jing-hua, CHEN Cong. Lossless Cable Identification Method Based on White-light Interference[J]. Chinese Journal of Luminescence, 2011,32(5): 493-498
SUN Jing-hua, CHEN Cong. Lossless Cable Identification Method Based on White-light Interference[J]. Chinese Journal of Luminescence, 2011,32(5): 493-498 DOI: 10.3788/fgxb20113205.0493.
Lossless Cable Identification Method Based on White-light Interference
A method of the lossless identification for fiber cable based on white-light interference is studied. When the two ends of fiber-optic are connected
the light-wave is coupled into two beams of light with the same light intensity and transmit in the opposite directions. Detector receives signals generated by the other side. The two optical fibers side by side with the force of outside and the optical fiber path changes are analyzed. The output signals on some conditions are simulated and verified by experiment. The impact signal
the sinusoidal signal with a known frequency and the music signals are used as the divided external signal source
and the output signal is observed. By analyzing the spectral
and comparing with the input signal
this method of the lossless identification system is proved feasible.
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references
Sun Jianping. Accurately determinate the obstacle point in optical cable [J]. Communications World (通信世界), 2002, 3 (35):46-50 (in Chinese).[2] Huang Junhua, Zhang Zhong, Xu Jun, et al. Recognition of land based communication optical cable based on radio-frequency:CHN, CN201233462 . 2009-05-06.[3] Liang Shuang, Wang Jianghuai. Study and implementation on OTDR enevt analysis and obstacle judgement [J]. Optical Communication Technology (光通信技术), 2007, 31 (1):49-51 (in Chinese).[4] Xing Xuening. Principle and application of two kinds of fiber detecting instrument based on bending loss [J]. China Digital Cable TV (中国有线电视), 2006, 14 (18):1788-1790 (in Chinese).[5] Chen S, Palmer A W, Grattan K T V, et al. Study of electronically scanned optical fiber Fizzeu interferometer [J]. Electron. Lett., 1991, 27 (5):1032-1034 (in Chinese).[6] Li Xuesong, Liao Yanbiao, Li Tianchu, et al. White-light scanning fiber Michelson interferometer [J]. Acta Metrologica Sinica (计量学报), 1996, 17 (4):241-245 (in Chinese).[7] Udd E. Fiber optic acoustic sensor based on the Sagnac interferometer [J]. SPIE, 1983, 425 :90-95.[8] Wang Huiwen, Jiang Xianjin, Zhao Changming, et al. Optical Fiber Sensor (光纤传感器) [M]. Beijing: Defense Industry Press, 2001:50-51 (in Chinese).[9] Chen Desheng, Gao Hongyun, Xiao Ling, et al. Optical fiber sensor for sound source location based on sagnac interfero-meter [J]. Journal of Optoelectronics Laser (光电子激光), 2006, 17 (4):415-418 (in Chinese).