Title

Liquid-Crystal-Based Fourier Optical Spectrum Analyzer Without Moving Parts

Keywords

Birefringent filter; Dense wavelength-division multiplexing (DWDM); Fourier series; Fourier transform spectrometer; Liquid crystal devices

Abstract

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. ©2005 The Japan Society of Applied Physics.

Publication Date

1-1-2005

Publication Title

Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers

Volume

44

Issue

1 A

Number of Pages

291-293

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1143/JJAP.44.291

Socpus ID

15544391141 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/15544391141

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