Interaction of supercontinuum and Raman solitons with microstructure fiber gratings.
We investigate the interaction of visible supercontinuum light with fiber Bragg gratings that are UV-written in a birefringent air-silica microstructure fiber. Spectral enhancements near the grating resonance are observed, and their variations are studied by adjusting the power level and polarization of input pulses. With weak input pulses (<0.5nJ), individual Raman solitons are observed in the spectrum, and the grating generates a picosecond dispersive wave centered near its bandgap when a Raman soliton has both spatial and spectral overlap with the grating resonance. Using the nonlinear Schrödinger equation (NLSE) with a simplified model of the grating dispersion, our numerical modeling reproduces the salient features of this enhancement, and shows the important role played by grating dispersion outside the bandgap.
Li
Yufeng
Y
Salisbury
F
F
Zhu
Zhaoming
Z
Brown
Thomas
T
Westbrook
Paul
P
Feder
Kenneth
K
Windeler
Robert
R