Dynamic holographic eight-channel spectral equaliser for WDM

Author

Cohen, A.D. ; Mears, R.J.

Author_Institution

Dept. of Eng., Cambridge Univ., UK

fYear

1997

fDate

11-13 Aug. 1997

Firstpage

46

Lastpage

47

Abstract

We report equalisation of eight 3-4 nm-spaced WDM channels amplified by a non-gain-flattened EDFA. The 9.5 dB spectral gain range is reduced to 0.75 dB. Flattening of the filter passband has been experimentally demonstrated The dynamic holographic technology is based on a 128/spl times/128 pixellated FLC SLM (ferroelectric liquid crystal spatial light modulator) displaying 1-D binary-phase holograms, in combination with a fixed binary-phase grating.

Keywords

band-pass filters; equalisers; ferroelectric liquid crystals; fibre lasers; holographic gratings; liquid crystal devices; optical fibre networks; optical filters; spatial light modulators; wavelength division multiplexing; 0.75 dB; 1-D binary-phase holograms; 9.5 dB; WDM; dB spectral gain range; dynamic holographic eight-channel spectral equaliser; dynamic holographic technology; ferroelectric liquid crystal spatial light modulator; filter passband flattening; fixed binary-phase grating; non-gain-flattened EDFA; pixellated FLC SLM; Erbium-doped fiber amplifier; Ferroelectric materials; Filters; Gain; Gratings; Holography; Liquid crystal displays; Optical modulation; Passband; Wavelength division multiplexing;

fLanguage

English

Publisher

ieee

Conference_Titel

Vertical-Cavity Lasers, Technologies for a Global Information Infrastructure, WDM Components Technology, Advanced Semiconductor Lasers and Applications, Gallium Nitride Materials, Processing, and Devi

Conference_Location

Montreal, Que., Canada

Print_ISBN

0-7803-3891-X

Type

conf

DOI

10.1109/LEOSST.1997.619166

Filename

619166