A passive way to extend DTSS system distance

Yandong Gong; Jianzhong Hao; Michael Ong Ling Chuen; Varghese Paulose

doi:10.1117/12.782608

16 May 2008 A passive way to extend DTSS system distance

Yandong Gong, Jianzhong Hao, Michael Ong Ling Chuen, Varghese Paulose

Proceedings Volume 7004, 19th International Conference on Optical Fibre Sensors; 70040M (2008) https://doi.org/10.1117/12.782608
Event: 19th International Conference on Optical Fibre Sensors, 2008, Perth, WA, Australia

Abstract

Brillouin or Raman-based Distributed Temperature and Strain Sensor (DTSS) provide a chance to distributed measure the temperature and strain over tens of kilometer with higher resolution. Lots of efforts, for example, Raman amplifier, Signal processing methods et al, have been used to extend their sensing distance and increase their sensitivity and signal noise ratio. A sensing fiber, which has a gradually increasing Brillouin gain-coefficient g_B/A_eff or Raman gain coefficient g_R/A_eff along its length and which can keep the received Brillouin or Raman Stoke's power constant in a Brillouin or Raman DTSS, is proposed in this paper. This novel fiber and practical fiber link with such nonlinear coefficient profile can further double or triple extend the sensing distance of the distributed Brillouin or Raman Fiber-optic Sensor system.

Citation Download Citation

Yandong Gong, Jianzhong Hao, Michael Ong Ling Chuen, and Varghese Paulose "A passive way to extend DTSS system distance", Proc. SPIE 7004, 19th International Conference on Optical Fibre Sensors, 70040M (16 May 2008); https://doi.org/10.1117/12.782608

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