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Experimental setup for generation of pump and probe pulses. The upper path provided the pump pulses at , while the lower path generated the probe pulses at . OC: optical coupler, OBF: optical bandpass filter, ODL: optical delay line, VOA: variable optical attenuator, PMF: polarization maintaining fiber, DSF: dispersion shifted fiber (zero dispersion at ), EDFA: erbium-doped fiber amplifier. Inset: waveguide structure.
Measured Raman gain in -long silicon waveguide with (a) TE pump pulses and (b) TM pump pulses.
(a) Stimulated Raman scattering measured at peak-coupled pump powers of 0, 6, 16, 23, 30, 36, 42, 48 and , respectively. (b) Stokes gain spectrum.
Raman gain as a function of peak-coupled pump powers. The solid curve is the theoretical plot of Raman gain.
(a) Amplification of probe pulses observed by a photodiode. (b) Raman gain as a function of time delay between pump and probe pulses.
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