Ultralong 250 km remote sensor system based on a fiber loop mirror interrogated by an optical time-domain reflectometer.

A 253 km ultralong remote displacement sensor system based on a fiber loop mirror interrogated by a commercial optical time-domain reflectometer is proposed and experimentally demonstrated. The use of a fiber loop mirror increases the signal-to-noise ratio, allowing the system to interrogate sensors placed 253 km away from the monitoring system without using any optical amplification. The displacement sensor was based on a long period grating spliced inside of the loop mirror, which modifies the mirror reflectivity accordingly to the applied displacement.

[1]  Stefano Selleri,et al.  Resilient long-distance sensor system using a multiwavelength Raman laser , 2010 .

[2]  R. A. Perez-Herrera,et al.  L-band multiwavelength erbium-doped fiber ring laser for sensing applications , 2011, International Conference on Optical Fibre Sensors.

[3]  Takanori Saitoh,et al.  Ultra-long-distance (230 km) FBG sensor system , 2008 .

[4]  Young-Geun Han,et al.  Development of a multiwavelength Raman fiber laser based on phase-shifted fiber Bragg gratings for long-distance remote-sensing applications. , 2005, Optics letters.

[5]  Changyuan Yu,et al.  100-km Long Distance Fiber Bragg Grating Sensor System Based on Erbium-Doped Fiber and Raman Amplification , 2010, IEEE Photonics Technology Letters.

[6]  Orlando Frazão,et al.  Optical bend sensor based on a long-period fiber grating monitored by an optical time-domain reflectometer , 2005 .

[7]  M. Lopez-Amo,et al.  Hybrid OTDR-fiber laser system for remote sensor multiplexing , 2010, European Workshop on Optical Fibre Sensors.

[8]  Sien Chi,et al.  Long-distance fiber grating sensor system using a fiber ring laser with EDWA and SOA , 2005 .

[9]  Jose Miguel Lopez-Higuera,et al.  Remote (155 km) Fiber Bragg Grating Interrogation Technique Combining Raman, Brillouin, and Erbium Gain in a Fiber Laser , 2011, IEEE Photonics Technology Letters.

[10]  A. Vengsarkar,et al.  Optical fiber long-period grating sensors. , 1996, Optics letters.

[11]  K. Nakamura,et al.  Ultra-Long-Distance Fiber Bragg Grating Sensor System , 2007, IEEE Photonics Technology Letters.