All-optical polarisation switching at 1.5 /spl mu/m in In/sub 1-x/Ga/sub x/As/sub y/(P/sub 1-y/)-InGaAsP multiple quantum wells

Author

Hyland, J.T. ; Kennedy, G.T. ; Miller, Alice ; Button, C.C.

Author_Institution

Sch. of Phys. & Astron., St. Andrews Univ., UK

fYear

1999

fDate

28-28 May 1999

Firstpage

377

Lastpage

378

Abstract

Summary form only given. All-optical polarisation switches based on the excitation of spin polarised electrons in GaAs multiple quantum wells (MQWs) have been demonstrated previously with recovery times in the range 20 to 80 ps at wavelengths around 850 nm. In this work, we have studied the well width dependence of spin-dependent optical nonlinearities and spin relaxation times in InGaAsP MQWs and demonstrated all-optical polarisation switching with a recovery time as short as 5.5 ps at wavelengths compatible with all-optical soliton communication systems.

Keywords

III-V semiconductors; electro-optical switches; gallium arsenide; gallium compounds; indium compounds; photonic switching systems; quantum well devices; semiconductor quantum wells; 1.5 mum; 20 to 80 ps; 850 nm; In/sub 1-x/Ga/sub x/As/sub y/(P/sub 1-y/)-InGaAsP multiple quantum wells; InGaAsP; all-optical polarisation switching; all-optical soliton communication systems; recovery time; spin polarised electrons excitation; spin relaxation times; spin-dependent optical nonlinearities; Absorption; Distributed Bragg reflectors; Erbium-doped fiber amplifier; Gallium arsenide; Optical fiber couplers; Optical fiber polarization; Optical surface waves; Pulse amplifiers; Resonance; Timing;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics, 1999. CLEO '99. Summaries of Papers Presented at the Conference on

Conference_Location

Baltimore, MD, USA

Print_ISBN

1-55752-595-1

Type

conf

DOI

10.1109/CLEO.1999.834332

Filename

834332