Frequency-modulated continuous wave reflectometry for 100-km fiber span backscatter measurement without using optical amplifier

Jihong Geng; Christine Spiegelberg; Shibin Jiang

doi:10.1117/12.623440

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23 May 2005 Frequency-modulated continuous wave reflectometry for 100-km fiber span backscatter measurement without using optical amplifier

Jihong Geng, Christine Spiegelberg, Shibin Jiang

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Proceedings Volume 5855, 17th International Conference on Optical Fibre Sensors; (2005) https://doi.org/10.1117/12.623440
Event: 17th International Conference on Optical Fibre Sensors, 2005, Bruges, Belgium

Abstract

Frequency-modulated continuous wave (FMCW) measurements of Rayleigh backscattering and Fresnel reflection from 95-km fiber have been demonstrated by using a compact piezo-electrically-tuned sub-kilohertz-linewidth fiber laser. This technique enables ultra-long fiber fault location in optical transmission systems. The high sensitivity (over-80dBm) of the long-range backscatter measurements without using optical amplifier are benefit from the extremely long coherence length of the sub-kilohertz linewidth fiber laser, which has been estimated to be 210 km in air.

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Jihong Geng, Christine Spiegelberg, and Shibin Jiang "Frequency-modulated continuous wave reflectometry for 100-km fiber span backscatter measurement without using optical amplifier", Proc. SPIE 5855, 17th International Conference on Optical Fibre Sensors, (23 May 2005); https://doi.org/10.1117/12.623440

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