Title :
High-speed MQW electroabsorption optical modulators integrated with low-loss waveguides
Author :
Ido, T. ; Sano, H. ; Suzuki, M. ; Tanaka, S. ; Inoue, H.
Author_Institution :
Central Res. Lab., Hitachi Ltd., Tokyo, Japan
Abstract :
An MQW electro-absorption optical modulator integrated with low-loss input and output waveguides is proposed to achieve larger modulation bandwidth with a shorter modulation region, keeping the total device length large enough for easy fabrication and packaging. A fabricated 1-mm-long modulator with a modulation-region length of 50 μm shows a low insertion loss (7 dB), low driving voltage (V/sub 10/ /sub dB/=2.6 V), and large modulation bandwidth f/sub 3 dB/=40 (GHz) extrapolated from measurements up to 20 GHz. This modulator is suitable for application to ultra-high-speed fiber transmission systems.
Keywords :
electro-optical modulation; electroabsorption; optical fabrication; optical fibre communication; optical losses; optical planar waveguides; packaging; semiconductor quantum wells; 1 mm; 2.6 V; 20 GHz; 40 GHz; 50 mum; 7 dB; easy fabrication; high-speed MQW electroabsorption optical modulators; large modulation bandwidth; larger modulation bandwidth; low driving voltage; low insertion loss; low-loss input waveguides; low-loss waveguides; modulation-region length; output waveguides; packaging; shorter modulation region; total device length; ultra-high-speed fiber transmission systems; Bandwidth; High speed optical techniques; Integrated optics; Optical device fabrication; Optical devices; Optical losses; Optical modulation; Optical waveguides; Packaging; Quantum well devices;
Journal_Title :
Photonics Technology Letters, IEEE
