Title :
Signal quality and BER performance improvement by wavelength conversion with an integrated three-port Mach-Zehnder interferometer
Author :
Idler, W. ; Schilling, M. ; Daub, K. ; Baums, D. ; Körner, U. ; Lach, E. ; Laube, G. ; Wünstel, K.
Author_Institution :
Optoelectron. Components Div., Alcatel SEL, Stuttgart, Germany
fDate :
3/16/1995 12:00:00 AM
Abstract :
2.5 Gbit/s all-optical wavelength conversion is reported with a novel monolithically integrated Mach-Zehnder interferometer realised in InGaAs/InP MQW technology. The three-port MZI wavelength converter enables strong improvement of extinction ratios up to 11 dB in dynamic operation and signal chirp reduction by optical crossphase modulation. This improvement of signal quality by wavelength conversion is confirmed by a gain of 2.3 dB in system sensitivity after transmission over 100 km (nondispersion-shifted) fibre compared to the standard 2.5 Gbit/s direct modulation performance of a DFB laser
Keywords :
III-V semiconductors; Mach-Zehnder interferometers; gallium arsenide; indium compounds; integrated optics; optical frequency conversion; optical receivers; semiconductor quantum wells; 100 km; 2.3 dB; 2.5 Gbit/s; BER performance; InGaAsP-InP; MQW technology; MZI wavelength converter; all-optical wavelength conversion; dynamic operation; extinction ratios; integrated three-port Mach-Zehnder interferometer; nondispersion-shifted fibre; optical crossphase modulation; signal chirp reduction; signal quality;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19950306
