Dynamic bandpass filtering using a programmable Interferometer array

Author

Afonso, A. ; de la Tocnaye, J.Ld.B. ; Wolffer, N. ; Defosse, Y. ; Gautier, P.

Author_Institution

Groupement des Ecoles de Telecommun.-Ecole Nat. Superieure de Telecommun. de Bretagne, Brest, France

Volume

17

Issue

5

fYear

2005

fDate

5/1/2005 12:00:00 AM

Firstpage

1079

Lastpage

1081

Abstract

We describe the principle and present preliminary results obtained on a dynamic bandpass filter using a 4-f free space imaging system with demultiplexing optics in one arm of a Michelson interferometer. Attenuation and blocking are performed by delaying the channel optical paths thanks to a reconfigurable nano-polymer dispersed liquid crystal phase modulator array. Our system is intrinsically polarization insensitive.

Keywords

Michelson interferometers; band-pass filters; demultiplexing; nanostructured materials; optical arrays; optical filters; phase modulation; polymer dispersed liquid crystals; spatial light modulators; 4-f free space imaging; Michelson interferometer; channel optical paths; demultiplexing; dynamic bandpass filtering; programmable interferometer array; reconfigurable nano-polymer dispersed liquid crystal phase modulator array; Band pass filters; Filter bank; Filtering; Optical arrays; Optical attenuators; Optical filters; Optical imaging; Optical interferometry; Optical modulation; Phased arrays; Fiber-optics components; interferometer; spatial light modulator (SLM);

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2005.844331

Filename

1424106