Bandpass response of collinear beam acousto-optic tunable filters

Author

Chang, I.C. ; Xu, J. ; Wo, D.

Author_Institution

Aurora Assoc., Santa Clara, CA, USA

Volume

1

fYear

1997

fDate

5-8 Oct 1997

Firstpage

745

Abstract

This paper presents theoretical and experimental results of the collinear beam acousto-optic tunable filter (CBAOTF) for wavelength division multiplexing (WDM) applications. The bandpass response of a TeO ₂ CBAOTF is calculated taking into account the effect of optical beam divergence. Significant improvement of the bandpass response is obtainable by properly apodizing the acoustic excitation. The experimental results of a polarization independent CBAOTF measured at 1550 nm include 1.3 nm bandwidth, 95 percent diffraction efficiency at a drive power of less than 100 mW. The bandpass falls off below 27 dB at 3 nm away from the center wavelength

Keywords

acousto-optical filters; band-pass filters; tellurium compounds; 100 mW; 1550 nm; TeO₂; acoustic excitation; apodization; bandpass response; bandwidth; collinear beam acousto-optic tunable filter; diffraction efficiency; drive power; optical beam divergence; polarization independent CBAOTF; wavelength division multiplexing; Acoustic beams; Acoustic measurements; Band pass filters; Bandwidth; Optical beams; Optical filters; Optical polarization; Power measurement; Wavelength division multiplexing; Wavelength measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium, 1997. Proceedings., 1997 IEEE

Conference_Location

Toronto, Ont.

ISSN

1051-0117

Print_ISBN

0-7803-4153-8

Type

conf

DOI

10.1109/ULTSYM.1997.663123

Filename

663123