Enhancement of self-phase modulation induced spectral broadening in silicon suspended membrane waveguides
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AbstractWe experimentally observed a possibly enhanced self-phase modulation (SPM) in silicon suspended membrane waveguides (SMWs) by measuring the spectral broadening of optical pulses. The nonlinear coefficient n 2 and the two-photon absorption coefficient β 2 of silicon SMWs were measured to be (4.6 ±0.9) ×10-18 m2 W-1 and 0.46 cm GW-1 at 1555 nm wavelength. We also proposed a method of using SPM-induced spectral broadening to obtain the coupling loss of a single grating coupler and experimentally compared the spectra of two grating couplers in silicon SMWs and in silicon-on-insulator waveguides.
All Author(s) ListZhang Y., Cheng Z., Liu L., Zhu B., Wang J., Zhou W., Wu X., Tsang H.K.
Journal nameJournal of Optics
Volume Number18
Issue Number5
PublisherInstitute of Physics Publishing
Place of PublicationUnited Kingdom
LanguagesEnglish-United Kingdom
Keywordsnonlinear, self-phase modulation, silicon-oninsulator, suspended membrane waveguide

Last updated on 2021-17-01 at 01:20