Cancellation of bending-induced birefringence in single-mode fibers: application to faraday sensors.
We demonstrate that one can cancel the bending-induced linear birefringence in single-mode fibers by inducing a controlled anisotropy in a direction orthogonal to the bending plane. In particular, the controlled anisotropy can be generated by application of a lateral compressive stress on the fiber. This effect can be applied for the construction of birefringence-free fiber coils in Faraday sensor heads (e.g., in current sensors) to improve their sensitivity.
Instituto de Física, Facultad de Ingeniería (UdelaR), J. Herrera y Reissig 565, Montevideo, Uruguay. dpercian@ucu.edu.uy
César D
CD
Perciante
José A
JA
Ferrari