6533b838fe1ef96bd12a4913
RESEARCH PRODUCT
Spectral broadening enhancement in silicon waveguides through pulse shaping
Enrique SilvestreVictor Torres-companyDavid Castelló-lurbePedro Andréssubject
PhysicsNonlinear opticsSiliconbusiness.industrychemistry.chemical_elementPhysics::OpticsIntegrated opticsÒpticaPulse shapingAtomic and Molecular Physics and OpticsPulse (physics)WavelengthSemiconductorOpticsSpectral broadeningchemistrybusinessAbsorption (electromagnetic radiation)Self-phase modulationDoppler broadeningdescription
Spectral broadening in silicon waveguides is usually inhibited at telecom wavelengths due to some adverse effects related to semiconductor dynamics, namely, two-photon and free-carrier absorption (FCA). In this Letter, our numerical simulations show that it is possible to achieve a significant enhancement in spectral broadening when we properly preshape the input pulse to reduce the impact of FCA on spectral broadening. Our analysis suggests that the use of input pulses with the correct skewness and power level is crucial for this achievemen This work was financially supported by the Plan Nacional Investigación, Desarrollo e Innovación (I+D +I) under the research project TEC2008-05490, by Minis- terio de Ciencia e Innovación (Spain), and by the Gener- alitat Valenciana under the grant PROMETEO 2009-077.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2012-01-01 |