Nonlinear-Optic Silicon-Nanowire Waveguides

Using a 4-mm-long compact silicon-nanowire waveguide, we demonstrated nonlinear-optic effects such as the spectral broadening of optical short pulses due to self-phase modulation and nonlinear transmittance due to two-photon absorption. At a 12 W input power level, we observed a 1.5-π nonlinear phas...

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Bibliographic Details
Published in:Japanese Journal of Applied Physics 2005-09, Vol.44 (9R), p.6541
Main Authors: Yamada, Hirohito, Shirane, Masayuki, Chu, Tao, Yokoyama, Hiroyuki, Ishida, Satomi, Arakawa, Yasuhiko
Format: Article
Language:English
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Summary:Using a 4-mm-long compact silicon-nanowire waveguide, we demonstrated nonlinear-optic effects such as the spectral broadening of optical short pulses due to self-phase modulation and nonlinear transmittance due to two-photon absorption. At a 12 W input power level, we observed a 1.5-π nonlinear phase shift and a strong saturation of optical output power in a sample. We also estimated the third-order nonlinear coefficient n 2 and the two-photon absorption coefficient β, and compared them with those previously reported.
ISSN:0021-4922
1347-4065
DOI:10.1143/JJAP.44.6541