Translator Disclaimer
23 March 1988 Correlation-Optical-Time-Domain-Reflectometry For High Resolution Distributed Fiber-Optic Sensing
Author Affiliations +
Proceedings Volume 0838, Fiber Optic and Laser Sensors V; (1988)
Event: Cambridge Symposium on Fiber Optics and Integrated Optoelectronics, 1987, Cambridge, MA, United States
Distributed fiber-optic sensing systems require a spatial resolution of less than one meter, which cannot easily by reached by conventional optical-time-domain-reflectometry (OTDR), because of present electronics response times limited to about 10 ns. Correlation-Optical-Time-Domain-Reflectometry (COTDR) is a powerful technique for high resolution test of distributed single-mode fiber sensors in the long wavelength range 1.3-1.6μm. This paper describes the realization of a 1.3μm COTDR using a 200 Mb/s pseudo-random sequence which allows a spatial resolution of 50 cm, and gives results obtained on a short single-mode fiber length with localized defects simulating a distributed line of sensors.
© (1988) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Jean-Jacques Bernard and Emmanuel Depresles "Correlation-Optical-Time-Domain-Reflectometry For High Resolution Distributed Fiber-Optic Sensing", Proc. SPIE 0838, Fiber Optic and Laser Sensors V, (23 March 1988);

Back to Top