2 February 2009 Slow and fast light in optical fibers using acoustooptic coupling between two co-propagating modes
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Abstract
We demonstrate numerically that acoustooptic interaction between two co-propagating modes in an optical fiber can be utilized to obtain positive and negative delays. A single acousto-optic interaction region, and a configuration based on two acousto-optic interaction regions, separated by a section of unperturbed fiber, are simulated. It is found that the delays and advancements can be several pulse lengths in the configuration with two acoustooptic coupling regions separated by a section of unperturbed fiber. These results are not in conflict with relativistic causality, but are a consequence of the difference in group velocity between the two coupled modes.
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Magnus W. Haakestad, Johannes Skaar, "Slow and fast light in optical fibers using acoustooptic coupling between two co-propagating modes", Proc. SPIE 7226, Advances in Slow and Fast Light II, 72260F (2 February 2009); doi: 10.1117/12.807548; https://doi.org/10.1117/12.807548
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