Open AccessAll-optical modulation using two-photon absorption in silicon core optical fibers
Author(s) -
Priyanth Mehta,
Noel Healy,
Todd D. Day,
Justin R. Sparks,
Pier J. A. Sazio,
John V. Badding,
Anna C. Peacock
Publication year - 2011
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.19.019078
Subject(s) - optics , materials science , extinction ratio , modulation (music) , two photon absorption , cross phase modulation , absorption (acoustics) , optical fiber , amorphous silicon , self phase modulation , optoelectronics , nonlinear optics , core (optical fiber) , wavelength , silicon , phase modulation , physics , laser , crystalline silicon , acoustics , phase noise
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.