A fiber-optic low-coherent reflectometer was developed to accurately monitor fiber length variation. A large length-coverage range was obtained by using a fiber Bragg grating array in a wavelength-division-multiplexing configuration. The polarization mismatch-induced signal fading was eliminated by applying a polarization spreading technique at the optical receiver and, therefore, no active polarization adjustment was necessary for long-term measurement.
CITATION STYLE
Hui, R., Thomas, J., Allen, C., Fu, B., & Gao, S. (2003). Low-coherent WDM reflectometry for accurate fiber length monitoring. IEEE Photonics Technology Letters, 15(1), 96–98. https://doi.org/10.1109/LPT.2002.805842
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