dorsal/arxiv
View SchemaBroadband SBS Slow Light in an Optical Fiber
| Authors | Zhaoming Zhu, Andrew M. C. Dawes, Daniel J. Gauthier, Lin Zhang, Alan E. Willner |
|---|---|
| Categories | |
| ArXiv ID | physics/0607169 |
| URL | https://arxiv.org/abs/physics/0607169 |
| DOI | 10.1364/OE.14.007238 |
Abstract
We investigate slow-light via stimulated Brillouin scattering in a room temperature optical fiber that is pumped by a spectrally broadened laser. Broadening the spectrum of the pump field increases the linewidth $\Delta\omega_p$ of the Stokes amplifying resonance, thereby increasing the slow-light bandwidth. One physical bandwidth limitation occurs when the linewidth becomes several times larger than the Brillouin frequency shift $\Omega_B$ so that the anti-Stokes absorbing resonance cancels out substantially the Stokes amplifying resonance and hence the slow-light effect. We find that partial overlap of the Stokes and anti-Stokes resonances can actually lead to an enhancement of the slow-light delay - bandwidth product when $\Delta\omega_p \simeq 1.3 \Omega_B$. Using this general approach, we increase the Brillouin slow-light bandwidth to over 12 GHz from its nominal linewidth of $\sim$30 MHz obtained for monochromatic pumping. We controllably delay 75-ps-long pulses by up to 47 ps and study the data pattern dependence of the broadband SBS slow-light system.
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"abstract": "We investigate slow-light via stimulated Brillouin scattering in a room\ntemperature optical fiber that is pumped by a spectrally broadened laser.\nBroadening the spectrum of the pump field increases the linewidth\n$\\Delta\\omega_p$ of the Stokes amplifying resonance, thereby increasing the\nslow-light bandwidth. One physical bandwidth limitation occurs when the\nlinewidth becomes several times larger than the Brillouin frequency shift\n$\\Omega_B$ so that the anti-Stokes absorbing resonance cancels out\nsubstantially the Stokes amplifying resonance and hence the slow-light effect.\nWe find that partial overlap of the Stokes and anti-Stokes resonances can\nactually lead to an enhancement of the slow-light delay - bandwidth product\nwhen $\\Delta\\omega_p \\simeq 1.3 \\Omega_B$. Using this general approach, we\nincrease the Brillouin slow-light bandwidth to over 12 GHz from its nominal\nlinewidth of $\\sim$30 MHz obtained for monochromatic pumping. We controllably\ndelay 75-ps-long pulses by up to 47 ps and study the data pattern dependence of\nthe broadband SBS slow-light system.",
"arxiv_id": "physics/0607169",
"authors": [
"Zhaoming Zhu",
"Andrew M. C. Dawes",
"Daniel J. Gauthier",
"Lin Zhang",
"Alan E. Willner"
],
"categories": [
"physics.optics"
],
"doi": "10.1364/OE.14.007238",
"title": "Broadband SBS Slow Light in an Optical Fiber",
"url": "https://arxiv.org/abs/physics/0607169"
},
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