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

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 wid...

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Published inTechnical Digest. Summaries of papers presented at the Conference on Lasers and Electro-Optics. Postconference Edition. CLEO '99. Conference on Lasers and Electro-Optics (IEEE Cat. No.99CH37013) pp. 377 - 378
Main Authors Hyland, J.T., Kennedy, G.T., Miller, A., Button, C.C.
Format Conference Proceeding
LanguageEnglish
Published IEEE 1999
Subjects
Absorption
Distributed Bragg reflectors
Erbium-doped fiber amplifier
Gallium arsenide
Optical fiber couplers
Optical fiber polarization
Optical surface waves
Pulse amplifiers
Resonance
Timing
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Summary: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.
ISBN:9781557525956
1557525951
DOI:10.1109/CLEO.1999.834332