Title :
High contrast optical modulator based on electrically tunable polarization rotation and phase retardation in uniaxially strained (100) multiple quantum wells
Author :
Shen, H. ; Pamulapati, J. ; Wraback, M. ; Taysing-Lara, M. ; Dutta, M. ; Kuo, H.C. ; Lu, Y.
fDate :
6/1/1994 12:00:00 AM
Abstract :
We report a novel approach to the design of normal incidence multiple quantum well light modulators. The quantum confined Stark effect is utilized to tune the light polarization rotation and phase retardation created by a thermally induced in-plane anisotropic strain. An exceedingly high contrast ratio of 5000:1 is demonstrated for a normally-on device at room temperature.<>
Keywords :
Stark effect; electro-optical devices; internal stresses; light polarisation; semiconductor quantum wells; thermal expansion; thermo-optical effects; contrast ratio; electrically tunable polarization rotation; high contrast optical modulator; light polarization rotation; normal incidence multiple quantum well light modulators; normally-on device; phase retardation; quantum confined Stark effect; thermally induced in-plane anisotropic strain; tune; uniaxially strained multiple quantum wells; Absorption; Anisotropic magnetoresistance; Optical buffering; Optical devices; Optical films; Optical modulation; Optical polarization; Optical sensors; Phase modulation; Quantum well devices;
Journal_Title :
Photonics Technology Letters, IEEE
