All-optical modulation using two-photon absorption in silicon core optical fibers

P Mehta; N Healy; T D Day; J R Sparks; P J A Sazio; J V Badding; A C Peacock

doi:10.1364/OE.19.019078

All-optical modulation using two-photon absorption in silicon core optical fibers

Opt Express. 2011 Sep 26;19(20):19078-83. doi: 10.1364/OE.19.019078.

Authors

P Mehta¹, N Healy, T D Day, J R Sparks, P J A Sazio, J V Badding, A C Peacock

Affiliation

¹ Optoelectronics Research Centre, University of Southampton, Southampton SO17 1BJ, UK.

PMID: 21996848
DOI: 10.1364/OE.19.019078

Abstract

All-optical modulation based on degenerate and non-degenerate two-photon absorption (TPA) is demonstrated within a hydrogenated amorphous silicon core optical fiber. The nonlinear absorption strength is determined by comparing the results of pump-probe experiments with numerical simulations of the coupled propagation equations. Subpicosecond modulation is achieved with an extinction ratio of more than 4 dB at telecommunications wavelengths, indicating the potential for these fibers to find use in high speed signal processing applications.

Publication types

Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

Computer-Aided Design
Equipment Design
Optical Fibers*
Photons*
Refractometry / instrumentation*
Scattering, Radiation*
Silicon / chemistry*

Substances

Silicon