Open AccessImpact of dispersion profiles of silicon waveguides on optical parametric amplification in the femtosecond regime
Author(s) -
Zhaolu Wang,
Hongjun Liu,
Nan Huang,
Qibing Sun,
Jin Wen
Publication year - 2011
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.19.024730
Subject(s) - optics , femtosecond , materials science , waveguide , optical parametric amplifier , dispersion (optics) , ultrashort pulse , silicon , silicon photonics , self phase modulation , optoelectronics , laser , optical amplifier , nonlinear optics , physics
The impact of dispersion profiles of silicon waveguides on femtosecond optical parametric amplification (OPA) is theoretically investigated. It is found that flat quasi-phase-matching, smooth temporal profiles and separable spectra for 200 fs pulses can be obtained by tailoring the cross-section of silicon rib waveguide. We achieve on-chip parametric gain as high as 26.8 dB and idler conversion gain of 25.6 dB for a low pump peak power over a flat bandwidth of 400 nm in a 10-mm-long dispersion engineered silicon waveguide. Our on-chip OPA can find important potential applications in highly integrated optical circuits for all-optical ultrafast signal processing.