Blue-Extended Sub-Nanosecond Supercontinuum Generation in Simply Designed Nonlinear Microstructured Optical Fibers

Author

Ghosh, Debashri ; Roy, Samudra ; Pal, Mrinmay ; Leproux, Philippe ; Viale, Pierre ; Tombelaine, Vincent ; Bhadra, Shyamal K.

Author_Institution

Fiber Opt. & Photonics Div., Council of Sci. & Ind. Res., Kolkata, India

Volume

29

Issue

2

fYear

2011

Firstpage

146

Lastpage

152

Abstract

We report experimentally observed extreme blue-enhanced supercontinuum (SC) generation down to 372 nm wavelength in simply designed and easily fabricated nonlinear microstructured optical fibers (MOFs). Three different MOFs of various core sizes and dispersion profiles are fabricated in order to optimize the parameters for achieving deeper blue components by group-index matching. The physical mechanism involved in the generation of extreme blue component is explained along with other nonlinear processes participating in the spectral broadening. We also explore the extent of applicability of the group-index matching technique for obtaining blue-enhanced SC and finally optimize the location of the zero dispersion wavelength (ZDW) with respect to the pump wavelength to achieve the maximum blue shift.

Keywords

holey fibres; optical design techniques; optical fibre dispersion; optical fibre fabrication; optical pumping; spectral line broadening; spectral line shift; supercontinuum generation; blue shift; blue-extended subnanosecond supercontinuum generation; core sizes; dispersion profiles; group-index matching; nonlinear microstructured optical fibers; nonlinear processes; spectral broadening; wavelength 372 nm; zero dispersion wavelength; Indexes; Nonlinear optics; Optical fiber dispersion; Optical pumping; Silicon compounds; Ultrafast optics; Dispersion; microstructured fibers; nonlinear effects; supercontinuum generation;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/JLT.2010.2096458

Filename

5657219