We report the first (to our knowledge) observation of correlated photon emission in hydrogenated amorphous- silicon waveguides. We compare this to photon generation in crystalline silicon waveguides with the same geometry. In particular, we show that amorphous silicon has a higher nonlinearity and competes with crystalline silicon in spite of higher loss.
© 2010 Optical Society of America
Original Manuscript: July 30, 2010
Manuscript Accepted: August 24, 2010
Published: October 13, 2010
S. Clemmen, A. Perret, S. K. Selvaraja, W. Bogaerts, D. van Thourhout, R. Baets, Ph. Emplit, and S. Massar, "Generation of correlated photons in hydrogenated amorphous-silicon waveguides," Opt. Lett. 35, 3483-3485 (2010)