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	Multi-mode coupling in long-period fibre gratings
	Liu Zi-Xi ; Yang Chang-Xi
	2010-05-10 ; 2010-05-10
关键词	Theoretical or Mathematical/ coupled mode analysis diffraction gratings light transmission optical fibre theory/ multimode coupling long-period fibre gratings three-mode coupling equations transmission matrix transmission spectra nonuniform gratings uniform gratings cladding mode resonant wavelengths two-mode coupling model group delay/ A4281D Optical propagation, dispersion and attenuation in fibres A4280F Gratings, echelles
中文摘要	We report multi-mode coupling in long-period fibre gratings (LPFGs). The analytical solution to three-mode coupling equations is presented for the first time. A 3*3 transmission matrix is attained and can be used to calculate the transmission spectra of nonuniform gratings in a way much faster than direct numerical integration. It is shown that when the resonant wavelengths of cladding modes are far from each other, two-mode coupling model can still be used. Otherwise we can only choose a multi-mode coupling model. Theoretically fitting of the result from the multi-mode coupling equations agrees well with the experimental one for mechanically-induced LPFGs.
语种	英语 ; 英语
出版者	Chinese Phys. Soc ; China
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/25349]
专题	清华大学
推荐引用方式 GB/T 7714	Liu Zi-Xi,Yang Chang-Xi. Multi-mode coupling in long-period fibre gratings[J],2010, 2010.
APA	Liu Zi-Xi,&Yang Chang-Xi.(2010).Multi-mode coupling in long-period fibre gratings..
MLA	Liu Zi-Xi,et al."Multi-mode coupling in long-period fibre gratings".(2010).

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