Title :
Polarization and wavelength insensitive MQW electroabsorption optical gates for WDM switching systems
Author :
Ido, Tatemi ; Koizumi, Mari ; Tanaka, Shigehisa ; Suzuki, Makoto ; Inoue, Hiroaki
Author_Institution :
Central Res. Lab., Hitachi Ltd., Kokubunji, Japan
fDate :
6/1/1996 12:00:00 AM
Abstract :
We propose using MQW electroabsorption (EA) modulators as optical gates in wavelength-division-multiplexing (WDM) switching systems. A fabricated MQW-EA gate with integrated waveguides showed a high extinction ratio (>30 dB), a low polarization-dependent loss (0.3 dB), and a low wavelength-dependent loss (1.1 dB) within the gain band (1545-1560 nm) of erbium doped fiber amplifiers (EDFAs). Ultra-high-speed (<40 ps) switching of a WDM signal was demonstrated.
Keywords :
electro-optical modulation; electro-optical switches; electroabsorption; high-speed optical techniques; light polarisation; multiplexing equipment; optical communication equipment; optical losses; semiconductor quantum wells; sensitivity; switching networks; wavelength division multiplexing; 0.3 dB; 1.1 dB; 1545 to 1560 nm; 40 ps; MQW electroabsorption modulators; MQW electroabsorption optical gates; WDM signal; WDM switching systems; erbium doped fiber amplifiers; fabricated MQW-EA gate; gain band; high extinction ratio; integrated waveguides; low polarization-dependent loss; low wavelength-dependent loss; polarization insensitive; ultra-high-speed ps switching; wavelength insensitive; wavelength-division-multiplexing; Extinction ratio; Optical fiber losses; Optical fiber polarization; Optical modulation; Optical polarization; Optical waveguides; Quantum well devices; Stimulated emission; Switching systems; Wavelength division multiplexing;
Journal_Title :
Photonics Technology Letters, IEEE
