Title

Liquid-crystal-based Fourier optical spectrum analyzer without moving parts

Authors

Authors

Y. Q. Lu; F. Du; Y. H. Wu;S. T. Wu

Comments

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Abbreviated Journal Title

Jpn. J. Appl. Phys. Part 1 - Regul. Pap. Brief Commun. Rev. Pap.

Keywords

liquid crystal devices; Fourier transform spectrometer; Fourier series; dense wave length-division multiplexing (DWDM); birefringent filter; TRANSFORM SPECTROMETER; TECHNOLOGY; Physics, Applied

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.

Journal Title

Japanese Journal of Applied Physics Part 1-Regular Papers Brief Communications & Review Papers

Volume

44

Issue/Number

1A

Publication Date

1-1-2005

Document Type

Article

Language

English

First Page

291

Last Page

293

WOS Identifier

WOS:000226996600062

ISSN

0021-4922

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