Abstract

We demonstrate Type II difference-frequency generation (DFG) around 1550nm in AlGaAs Bragg reflection waveguides using a pump around 778nm and a signal within the C-band range. Difference-frequency power of 0.95nW was obtained using a pump power of 62.9mW and a signal power of 2.9mW. Nonlinear conversion efficiency was estimated to be 2.5×10−2%/W−1cm−2 in a 1.5-mm-long sample. Using numerical simulations, the phase-matching bandwidth was predicted to be 100nm, while the measured DFG showed no sign of bandwidth limitation across a wavelength span of 40nm, which was limited by instrumentation.

© 2010 Optical Society of America

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