Ultrafast tilting of the dispersion of a photonic crystal and on-the-fly adiabatic frequency compression of light pulses

Author

Beggs, D.M. ; Kampfrath, Tobias ; Krauss, Thomas F. ; Kuipers, L.

Author_Institution

FOM Inst. AMOLF, Amsterdam, Netherlands

fYear

2012

fDate

2-5 July 2012

Firstpage

1

Lastpage

4

Abstract

We demonstrate the ultrafast tilting of the dispersion curve of a photonic crystal waveguide following the absorption of a femtosecond pump pulse. By shaping the pump cross section with a shadow mask, different waveguide eigenmodes have different spatial overlaps with the perturbation, leading to a local flattening of the dispersion by up to 11%. Such partial mode perturbation can be used to adiabatically compress the spectrum of a light pulse in the waveguide.

Keywords

high-speed optical techniques; optical dispersion; optical pulse compression; optical pumping; optical waveguides; photonic crystals; dispersion curve; femtosecond pump pulse; light pulses; local flattening; on-the-fly adiabatic frequency compression; partial mode perturbation; photonic crystal waveguide; pump cross section; shadow mask; ultrafast tilting; waveguide eigenmodes; Dispersion; Optical waveguides; Photonic crystals; Photonics; Refractive index; Silicon; active control; adiabatic; photonic crystals; silicon; spectral compression; ultrafast;

fLanguage

English

Publisher

ieee

Conference_Titel

Transparent Optical Networks (ICTON), 2012 14th International Conference on

Conference_Location

Coventry

ISSN

2161-2056

Print_ISBN

978-1-4673-2228-7

Electronic_ISBN

2161-2056

Type

conf

DOI

10.1109/ICTON.2012.6253792

Filename

6253792