Title :
All-optical wavelength conversion of 21.4-Gb/s QPSK signals using intersubband transition in InGaAs/AlAsSb coupled double quantum wells
Author :
Akimoto, Ryoichi ; Kuwatsuka, H. ; Gozu, S. ; Mozume, Teruo ; Ishikawa, Hiroshi
Author_Institution :
Network Photonics Res. Center, Nat. Inst. of Adv. Ind. Sci. & Technol. (AIST), Tsukuba, Japan
Abstract :
We have demonstrated format-free wavelength conversion using cross-phase modulation associated with intersubband transition (ISBT) in a quantum wells waveguide. The waveguide functions as an all-optical phase modulator and a TM-polarized-QPSK launched signal that excites ISBT is converted to a cross-polarized TE-signal immune to ISBT absorption.
Keywords :
optical fibre communication; optical fibre polarisation; optical modulation; optical waveguides; optical wavelength conversion; phase modulation; quadrature phase shift keying; semiconductor quantum wells; ISBT; InGaAs-AlAsSb; QPSK signals; TM-polarized-QPSK; all-optical phase modulator; all-optical wavelength conversion; bit rate 21.4 Gbit/s; coupled double quantum wells; cross-phase modulation; cross-polarized TE-signal; intersubband transition; Absorption; Indium gallium arsenide; Optical fibers; Optical wavelength conversion; Phase shift keying;
Conference_Titel :
Optical Communications (ECOC), 2012 38th European Conference and Exhibition on
