Abstract
Biasing a traveling-wave semiconductor amplifier to the transparency condition permits the exploitation of resonant nonlinear effects without altering the carrier-density distribution in the amplifier.1,2 Experimental investigations of amplifiers operating at transparency have shown an intensity-dependent refractive index of ~10−11 cm2·W−1, with a time constant considerably shorter than 10.1 Optical switching has previously been demonstrated in a nonlinear directional coupler operating in this regime.3 We present results from an optical switch operating on the principle of intensity-dependent rotation of polarization4,5
© 1995 Optical Society of America
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