Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/26898
Title: Coupled local-mode theory for strongly modulated long period gratings
Authors: Jin, L
Jin, W 
Ju, J
Wang, Y
Keywords: Coupled local-mode theory
Long period grating
Photonic crystal fiber
Issue Date: 2010
Publisher: Institute of Electrical and Electronics Engineers
Source: Journal of lightwave technology, 2010, v. 28, no. 12, 5460986, p. 1745-1751 How to cite?
Journal: Journal of lightwave technology 
Abstract: A method for modeling the mode-coupling process in strongly modulated long period gratings (LPGs) is reported. The method is based on calculating the variations of local-mode profiles and propagation constants over the perturbed regions and solving the coupled local-mode equations to obtain a quantitative description of the intermodal energy exchange. The mode-coupling process and the spectral characteristics of a CO2 laser-inscribed LPG in a photonic crystal fiber are numerically modeled and found in good agreement with the experimentally measured results. Compared with the methods based on the conventional coupled-mode and the mode-projection theories, the current method provides a more accurate description of the mode coupling process for LPGs with strong but slow-varying perturbations.
URI: http://hdl.handle.net/10397/26898
ISSN: 0733-8724
EISSN: 1558-2213
DOI: 10.1109/JLT.2010.2049252
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