Confinement loss in adiabatic photonic crystal fiber tapers
JOSA B, Vol. 23, Issue 9, pp. 1965-1974 (2006)
http://dx.doi.org/10.1364/JOSAB.23.001965
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Abstract
We numerically study confinement loss in photonic crystal fiber (PCF) tapers and compare our results with previously published experimental data. Agreement between theory and experiment requires taking into account hole shrinkage during the tapering process, which we measure by using a noninvasive technique. We show that losses are fully explained within the adiabatic approximation and that they are closely linked to the existence of a fundamental core-mode cutoff. This cutoff is equivalent to the core-mode cutoff in depressed-cladding fibers, so that losses in PCF tapers can be obtained semiquantitatively from an equivalent depressed-cladding fiber model. Finally, we discuss the definition of adiabaticity in this open boundary problem.
© 2006 Optical Society of America
OCIS Codes
(060.2270) Fiber optics and optical communications : Fiber characterization
(060.2310) Fiber optics and optical communications : Fiber optics
(060.2400) Fiber optics and optical communications : Fiber properties
ToC Category:
Photonic Crystals
History
Original Manuscript: January 13, 2006
Revised Manuscript: March 27, 2006
Manuscript Accepted: April 13, 2006
Citation
Boris T. Kuhlmey, Hong C. Nguyen, M. J. Steel, and Benjamin J. Eggleton, "Confinement loss in adiabatic photonic crystal fiber tapers," J. Opt. Soc. Am. B 23, 1965-1974 (2006)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-23-9-1965
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