Distributed optical fiber sensor for spatial location of polarization mode coupling

Ilkan Cokgor; Vincent A. Handerek; Alan J. Rogers

doi:10.1117/12.141296

5 March 1993 Distributed optical fiber sensor for spatial location of polarization mode coupling

Ilkan Cokgor, Vincent A. Handerek, Alan J. Rogers

Proceedings Volume 1797, Distributed and Multiplexed Fiber Optic Sensors II; (1993) https://doi.org/10.1117/12.141296
Event: Fibers '92, 1992, Boston, MA, United States

Abstract

Transverse stress applied to a highly birefringent fiber at an arbitrary angle (other than 0 or 90 degrees) to the fiber birefringence axes causes rotation of the birefringence axes and changes the beat length of the fiber in that section. If one of the polarization modes is excited at the input, coupling of light from one mode to the other will be observed at a stress point. The presentation describes a method for determining the locations of discrete mode coupling points spaced along a polarization maintaining fiber using a pump-prob architecture based on the optical Kerr effect. Probe light experiences coupling at different stress locations. Counterpropagating strong pump light also experiences coupling while inducing additional birefringence, and changing the polarization state of the probe at the output. This system may be made temperature independent by introducing a phase tracking/triggering system. The advantages and limitations of this technique are described.

Citation Download Citation

Ilkan Cokgor, Vincent A. Handerek, and Alan J. Rogers "Distributed optical fiber sensor for spatial location of polarization mode coupling", Proc. SPIE 1797, Distributed and Multiplexed Fiber Optic Sensors II, (5 March 1993); https://doi.org/10.1117/12.141296

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