Open AccessCross-phase modulation-induced spectral and temporal effects on co-propagating femtosecond pulses in silicon photonic wires
Author(s) -
I-Wei Hsieh,
Xiaogang Chen,
Jerry I. Dadap,
Nicolae C. Panoiu,
Richard M. Osgood,
Sharee J. McNab,
Yurii A. Vlasov
Publication year - 2007
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.15.001135
Subject(s) - femtosecond , cross phase modulation , photonics , optics , self phase modulation , phase modulation , modulation (music) , materials science , phase (matter) , optoelectronics , silicon photonics , kerr effect , nonlinear optics , physics , laser , phase noise , nonlinear system , quantum mechanics , acoustics
By performing time-resolved experiments and power-dependent measurements using femtosecond pulses inside submicron cross-section Si photonic-wire waveguides, we demonstrate strong cross-phase modulation (XPM) effects. We find that XPM in Si wires can be significant even for low peak pump powers, i.e., ~15 mW for pi phase shift. Our experimental data closely match numerical simulations using a rigorous coupled-wave theoretical treatment. Our results suggest that XPM is a potentially useful approach for all-optical control of photonic devices in Si wires.