T. Kanetake et al., NONLINEAR-OPTICAL PROPERTIES OF AN INGAAS INALAS MULTIPLE-QUANTUM-WELL WAVE-GUIDE WITH PULSED EXCITATION/, IEEE photonics technology letters, 6(3), 1994, pp. 418-421
Large optical refractive nonlinearity in a passive InGaAs/InAlAs multi
ple quantum well waveguide is demonstrated at a wavelength of 1.55 mum
by observing a shift in the transmission fringe of a Fabry-Perot reso
nator with a pulsed pump beam. In a 650-mum long resonator, a half pi
phase shift every 3.3 mW with increasing in pump beam power is observe
d up to 4pi. The response time of the nonlinear refractive index chang
e is estimated to be 1 ns.