Liquid-crystal-based Fourier optical spectrum analyzer without moving parts
Abbreviated Journal Title
Jpn. J. Appl. Phys. Part 1 - Regul. Pap. Brief Commun. Rev. Pap.
liquid crystal devices; Fourier transform spectrometer; Fourier series; dense wave length-division multiplexing (DWDM); birefringent filter; TRANSFORM SPECTROMETER; TECHNOLOGY; Physics, Applied
We propose and demonstrate a liquid-crystal (LC)-based Fourier optical spectrum analyzer (FOSA). The FOSA consists of a birefringent filter array with an embedded LC phase modulator. The LC phase modulator. is used to control the phase difference between two orthogonally polarized beams to avoid mechanical movement in conventional Fourier transform spectrometers. The detailed operation principle,of this FOSA is described. A single-LC-based 6-stage FOSA is experimentally demonstrated, and the results obtained using such a FOSA show good agreement with the results measured using a reference spectrometer.
Japanese Journal of Applied Physics Part 1-Regular Papers Brief Communications & Review Papers
"Liquid-crystal-based Fourier optical spectrum analyzer without moving parts" (2005). Faculty Bibliography 2000s. 5437.