2004
DOI: 10.1364/opex.12.000829
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Self-phase-modulation induced spectral broadening in silicon waveguides

Abstract: The prospect for generating supercontinuum pulses on a silicon chip is studied. Using ~4ps optical pulses with 2.2GW/cm(2) peak power, a 2 fold spectral broadening is obtained. Theoretical calculations, that include the effect of two-photon-absorption, indicate up to 5 times spectral broadening is achievable at 10x higher peak powers. Representing a nonlinear loss mechanism at high intensities, TPA limits the maximum optical bandwidth that can be generated.

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Cited by 145 publications
(90 citation statements)
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“…Because of a relatively large value of γ 0 in silicon waveguides, L N can easily become 1 mm or less at moderate peak power levels. As a result, the SPM-induced spectral broadening is frequently observed in short silicon waveguides [7][8][9][10][11][12]. Such spectral broadening has already been used to realize useful functions such as optical gating [10], regeneration [19] and multichannel spectral carving [18].…”
Section: Relative Magnitudes Of the Nonlinear And Free-carrier Effectsmentioning
confidence: 99%
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“…Because of a relatively large value of γ 0 in silicon waveguides, L N can easily become 1 mm or less at moderate peak power levels. As a result, the SPM-induced spectral broadening is frequently observed in short silicon waveguides [7][8][9][10][11][12]. Such spectral broadening has already been used to realize useful functions such as optical gating [10], regeneration [19] and multichannel spectral carving [18].…”
Section: Relative Magnitudes Of the Nonlinear And Free-carrier Effectsmentioning
confidence: 99%
“…These features enable efficient nonlinear interaction of optical waves at relatively low power levels inside a short SOI waveguide (<5 cm long). For this reason, considerable effort has been directed in recent years toward investigating the nonlinear phenomena such as self-phase modulation (SPM) [7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23], cross-phase modulation (XPM) [14,[24][25][26], stimulated Raman scattering (SRS) , and four-wave mixing (FWM) [61][62][63][64][65][66][67][68][69][70][71][72][73][74][75][76][77][78][79]. All of these nonlinear effects are currently being explored to realize a variety of optical functions on the chip scale.…”
Section: Introductionmentioning
confidence: 99%
“…These features enable efficient nonlinear phenomena to occur in the SOI waveguides. Many nonlinear effects, such as self-phase modulation (SPM) [11], cross-phase modulation (XPM) [12], fourwave mixing (FWM) and parametric amplification [2,3,8,13,14], twophoton absorption (TPA) [15], and stimulated Raman scattering (SRS) [16], have been demonstrated to efficiently occur with a relative low pump power in a short length of such waveguide. It opens a door for the SOI-based all-optical signal processing devices.…”
Section: Introductionmentioning
confidence: 99%
“…Substantial progress has been achieved, e.g., in the field of Raman amplification, in both continuous-wave [2] and pulsed pump-probe [3,4] experiments. Further nonlinear effects like two-photon absorption (TPA) [5], self-phase modulation (SPM) [6][7][8], cross-phase modulation (XPM) and continuum generation [9], four-wave mixing (FWM) [10] and the Kerr effect [11] have also been successfully demonstrated and thoroughly investigated -typically on time scales ranging from the picosecond to the nanosecond regime. In detail, a careful analysis of self-phase modulation in submicron silicon waveguides was recently presented by Dulkeith et al [8].…”
Section: Introductionmentioning
confidence: 99%