Authors:	J. Safioui, B. Kuyken, S. Selvaraja, W. Bogaerts, D. Van Thourhout, G. Roelkens, P. Emplit, R. Baets, S. Massar
Title:	Continuous-wave parametric conversion in hydrogenated amorphous photonic wire
Format:	International Conference Proceedings
Publication date:	11/2012
Journal/Conference/Book:	Proceedings of the 2012 Annual Symposium of the IEEE Photonics Society Belenux Chapter
Volume(Issue):	p.81-84
Location:	Belgium
Citations:	Look up on Google Scholar
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Abstract

We exploit the high ƒÔ(3) nonlinearity present in
hydrogenated amorphous silicon
nanophotonic waveguides to demonstrate frequency conversion at telecommunication wavelengths using pump and signal that are both continuous-wave. We reach a frequency conversion efficiency close to -34dB having a on-chip 13mW pump power in a low-loss 1cm long silicon photonic wire. Thanks to the ultra-low pump power and optimised hydrogen concentration during fabrication, optical degradation during illumination was reduced. The nonlinear refractive index is estimated for a set of hydrogenated amorphous silicon waveguides with different hydrogen concentrations by the four-wave mixing process, yielding a maximum value of n2=5.76~10-17 m2⁄W.