@article{b3767caa97074c37a43e93f8da8c7c65,
title = "The fundamental limitations on the practical realizations of white light cavities",
abstract = "We study the possibility of realizing white light cavities (WLCs) - cavities which essentially resonate over a continuous band and not at discrete frequencies, by utilizing linearly chirped Bragg reflectors (LCBGs) for phase compensation. Analytical and numerical analyses show that this goal cannot be achieved because the reflection of a specific frequency by a LCBG cannot be modeled as occurring at the position where the Bragg condition is satisfied. The accumulated effect of multiple scatterings at different locations along the LCBG produces a positive group delay, preventing the realization of a WLC using this approach. We also present a generic, filter theory based, argument showing that any phase component that exhibit a negative group delay necessarily has a corresponding dip in its amplitude response. The implications of this conclusion on the limitations and design rules of WLC based devices are discussed in details.",
keywords = "Fast light, Sensing, White light cavity",
author = "Yum, {Honam N.} and X. Liu and Hemmer, {P. R.} and J. Scheuer and Shahriar, {M. S.}",
note = "Funding Information: The authors would like to express their thanks to Jacob Khurgin for useful comments and stimulating discussions. This work was supported in part by the Israeli Science foundation, the US AFOSR Grant no. FA9550-10-1-0228 and the Exchange Program of the NU-TAU Institutes for Nanotechnology supported in part by the NSF Nanoscale Science and Engineering Initiative , Award number EEC-0647560 . ",
year = "2013",
doi = "10.1016/j.optcom.2013.05.015",
language = "אנגלית",
volume = "305",
pages = "260--266",
journal = "Optics Communications",
issn = "0030-4018",
publisher = "Elsevier B.V.",
}