A fiber-based device with a novel nematic liquid-crystal overlay compatible with silica fiber at room temperature is reported here to demonstrate polarization-independent modulation. The device is formed using a polished half-coupler block that has been surface treated so that the liquid crystal affects orthogonal polarizations in a similar and simultaneous manner. This permits the modulation of input light of arbitrary polarization on the application of an electric field.
© 1988 Optical Society of America
R. Kashyap, C. S. Winter, and B. K. Nayar, "Polarization-desensitized liquid-crystal overlay optical-fiber modulator," Opt. Lett. 13, 401-403 (1988)