Coherent optical time domain reflectometry using three frequency multiplexing probe

Abstract This paper proposes a multi-frequency probe based coherent optical time domain reflectometry (MFP C-OTDR). In the new C-OTDR scheme, single frequency light is converted to multi-frequency light and three multiplexing frequencies with the same power level are adopted as the probe, while local oscillator (LO) remains original single frequency. Coherent detection between the backscattered Rayleigh light of the multi-frequency probe and LO generates many intermediate frequencies (IFs), and three IFs corresponding to the three dominant frequencies of the probe are simultaneously measured and processed. Experimental results indicate that the MFP C-OTDR can triple the measurement number compared with conventional single frequency probe based C-OTDR, which brings much quick fading noise reduction capability and a 1.2 dB single way dynamic range (SWDR) enhancement.

[1]  Yahei Koyamada,et al.  Characteristics and reduction of coherent fading noise in Rayleigh backscattering measurement for optical fibers and components , 1992 .

[2]  Minyu Yao,et al.  Improvement of flatness of optical frequency comb based on nonlinear effect of intensity modulator. , 2011, Optics letters.

[3]  S. Akiba,et al.  Fault localization of optical WDM submarine cable networks using coherent-optical time-domain reflectometry , 1998, IEEE Photonics Technology Letters.

[4]  P B Phua,et al.  Spatially encoded multibeam laser Doppler vibrometry using a single photodetector. , 2010, Optics letters.

[5]  R. Howard.  Statistics of coherently detected backscatter and range performance of coherent OTDRs , 1987 .

[6]  P. Healey.  Fading rates in coherent OTDR , 1984 .

[7]  Fumihiko Ito,et al.  Ultra high dynamic range coherent optical time domain reflectometry employing frequency division multiplexing , 2011, International Conference on Optical Fibre Sensors.

[8]  M. Sumida,et al.  Enhanced coherent OTDR for long span optical transmission lines containing optical fiber amplifiers , 1995, IEEE Photonics Technology Letters.

[9]  H. Izumita,et al.  Fading noise reduction in coherent OTDR , 1992, IEEE Photonics Technology Letters.

[10]  P. Healey,et al.  Instrumentation principles for optical time domain reflectometry , 1986 .

[11]  M. Sumida.  Optical time domain reflectometry using an M-ary FSK probe and coherent detection , 1996 .

[12]  M. Sumida.  OTDR performance enhancement using a quaternary FSK modulated probe and coherent detection , 1995, IEEE Photonics Technology Letters.

[13]  R. C. Booth,et al.  OTDR in single-mode fibre at 1.5 μm using homodyne detection , 1982 .

[14]  P B Phua,et al.  Multipoint laser Doppler vibrometry with single detector: principles, implementations, and signal analyses. , 2011, Applied optics.

[15]  P. Healey,et al.  Fading in heterodyne OTDR , 1984 .

[16]  Richard Edward Epworth,et al.  Development of a coherent OTDR instrument , 1987 .

[17]  Jianping Yao,et al.  Investigation of phase-modulator-based all-optical bandpass microwave filter , 2005 .

[18]  S. Furukawa,et al.  High dynamic range coherent OTDR for fault location in optical amplifier systems , 1994, Conference Proceedings. 10th Anniversary. IMTC/94. Advanced Technologies in I & M. 1994 IEEE Instrumentation and Measurement Technolgy Conference (Cat. No.94CH3424-9).

[19]  F. W. Willems,et al.  Simultaneous suppression of stimulated Brillouin scattering and interferometric noise in externally modulated lightwave AM-SCM systems , 1994, IEEE Photonics Technology Letters.

[20]  Masatoyo Sumida,et al.  High-accurate fault location technology using FSK-ASK probe backscattering reflectometry in optical amplifier submarine transmission systems , 1996 .

[21]  Jianping Yao,et al.  Optical generation and distribution of continuously tunable millimeter-wave signals using an optical phase modulator , 2005, Journal of Lightwave Technology.

[22]  Yahei Koyamada,et al.  Stochastic amplitude fluctuation in coherent OTDR and a new technique for its reduction by stimulating synchronous optical frequency hopping , 1997 .