2008
DOI: 10.2528/pier07101102
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Raman Amplification and Superluminal Propagation of Ultrafast Pulses Based on Loop Silicon Waveguides: Theoretical Modeling and Performance

Abstract: Abstract-In this paper, we report, for the first time to the best of our knowledge, the detailed modeling and performance of Raman amplification and superluminal propagation of weak ultrafast femtosecond optical pulses in nonlinear loop single mode silicon-oninsulator anomalously dispersive optical waveguides. Using the device, theoretical results for 100-fs signal optical pulse show that when the launch peak power of signal pulse is fixed at −10 dBm, the gain value up to 30 dB can be achieved, and the delay t… Show more

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Cited by 6 publications
(1 citation statement)
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“…Such phenomenon called superluminality is generally attributed to steep anomalous dispersion [1][2][3][4][5][6][7][8] and tunneling effect [9][10][11][12][13][14][15][16][17], which have been experimentally demonstrated in the electromagneticallyinduced-absorption [1][2][3][4][5]/ring-resonator [6][7][8] optical systems and the photonic/waveguide [9][10][11][12][13][14][15][16][17] systems, respectively. However, the systems employing the anomalous dispersion usually operate near the steep absorption line, which leads to a narrow superluminal frequency range as well as low transmission (for passive systems), while the systems associated with the tunneling mechanism also suffer from extremely low transmission [16][17][18][19][20][21][22][23][24][25][26].…”
Section: Introductionmentioning
confidence: 99%
“…Such phenomenon called superluminality is generally attributed to steep anomalous dispersion [1][2][3][4][5][6][7][8] and tunneling effect [9][10][11][12][13][14][15][16][17], which have been experimentally demonstrated in the electromagneticallyinduced-absorption [1][2][3][4][5]/ring-resonator [6][7][8] optical systems and the photonic/waveguide [9][10][11][12][13][14][15][16][17] systems, respectively. However, the systems employing the anomalous dispersion usually operate near the steep absorption line, which leads to a narrow superluminal frequency range as well as low transmission (for passive systems), while the systems associated with the tunneling mechanism also suffer from extremely low transmission [16][17][18][19][20][21][22][23][24][25][26].…”
Section: Introductionmentioning
confidence: 99%