Fiber Bragg grating as an optical filter tuned by a magnetic field.
We describe a novel tunable optical filter for use in optical-frequency-domain multiplexed communication systems. The shift in the Bragg condition of a fiber Bragg grating as a result of magnetically induced circular birefringence is calculated with coupled-mode theory on the basis of circular states of polarization, and the values obtained for silica and terbium-doped optical fibers are compared.
Arce-Diego
J L
JL
López-Ruisánchez
R
R
López-Higuera
J M
JM
Muriel
M A
MA