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International Conference on Transparent Optical Networks

Efficient Slow Light Generation Using Highly Nonlinear Non-Silica-Based Fibers

Kazi S. Abedin

Published Jul 1, 2007• 1 citation
Publisher

Abstract

We will show efficient slow light generation that is based on Brillouin amplification in non-silica based optical fibers with large nonlinear coefficients. We particularly demonstrate efficient delaying of light by 40-60 ns using chalcogenide and tellurite fibers of only a few meters in length.
DOI
10.1109/icton.2007.4296212

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Slow-light delay via stimulated Brillouin scattering (SBS) in optical fibers is usually achieved with delay-dependent amplification that degrades system performance. To address this problem, we propose a SBS slow-light method that makes use of two widely separated anti-Stokes absorption resonances, and achieve nearly transparent slow light in an optical fiber. We demonstrate the method in a highly nonlinear optical fiber, and achieve a slow-light bandwidth of approximately 150 MHz and a relative of delay of approximately 0.3 for approximately 9-ns pulses with a signal attenuation of approximately 4.8 dB.
We report the generation of slow light using Brillouin amplification in a short length of highly nonlinear bismuth-oxide fiber. By using just 2 m of fiber, we demonstrate a five-fold reduction in group velocity for$\sim200−nspulses,whichwebelievetobearecordforaslow−lightpropagationinanopticalfiber.Moreover,byvirtueofthehighnonlinearityperunitlengthofthisfiber,weachievethisataverymodestpumppowerlevelofjust200-ns pulses, which we believe to be a record for a slow-light propagation in an optical fiber. Moreover, by virtue of the high nonlinearity per unit length of this fiber, we achieve this at a very modest pump power level of just200−nspulses,whichwebelievetobearecordforaslow−lightpropagationinanopticalfiber.Moreover,byvirtueofthehighnonlinearityperunitlengthofthisfiber,weachievethisataverymodestpumppowerlevelofjust\sim$400 mW and with a low inherent device latency of 14 ns. These results highlight both the merits and practicality of using high nonlinearity nonsilica fibers for slow-light devices.