Silicon Based Waveguides

Raman induced wavelength conversion in scaled Silicon waveguides

“…In waveguides with relatively large modal area (∼5 µm 2 ) the contribution of waveguide dispersion is insignificant and birefringence is the only viable means for phase matching [9,11]. However, in submicron modal area waveguides, such as the ones used in this work, birefringence increases dramatically to the extent that it over-compensates the material dispersion [12]. Fortunately, waveguide dispersion also increases sufficiently [13] that it can provide efficient conversion.…”

Silicon Raman laser, amplifier, and wavelength converter (Keynote Paper)

“…⋅∆N, where λ is the wavelength, in microns, and ∆N is the density of electron-hole pairs [26,27]. The latter is related to the pump intensity, p I , by…”

Efficient planar fiber-to-chip coupler based on two-stage adiabatic evolution

“…There exists another class of in-plane fiber-to-chip coupler structures where the light from the fiber is coupled into a fiber-matched waveguide with a rib which is adiabatically reduced in width along the coupler in order to shrink the mode size vertically by "squeezing" the mode out from the rib [14][15][16][17][18][19]. Such structures are usually used for coupling light into rib waveguides, which is an easier problem than coupling into wire waveguides because the mode size in the former is much larger.…”

“…Such structures are usually used for coupling light into rib waveguides, which is an easier problem than coupling into wire waveguides because the mode size in the former is much larger. In [14,15], the light from a fiber is first coupled into a rib waveguide with matching mode, and then transferred into a rib waveguide with smaller mode size. In [14], the measured coupling loss was less than 0.5dB, the input waveguide rib width was 12µm, and the taper length was 1mm.…”

“…In [14], the measured coupling loss was less than 0.5dB, the input waveguide rib width was 12µm, and the taper length was 1mm. In [15], a coupling loss of less than 1dB was reported. The fiber mode diameter was 10.4µm, the input fiber-matched rib waveguide was 12.5 × 12.5µm (width × height) with 10µm etch depth, the output rib waveguide was 3 × 4µm with 2µm etch depth, and the taper length was about 3mm.…”