Fused-silica beam splitter grating design based on modified simplified modal method

	Fused-silica beam splitter grating design based on modified simplified modal method
	Wang B.; Hao P.; Wu Y.; Li Y.
	2014
发表期刊	Guangxue Xuebao/Acta Optica Sinica
ISSN	ISBN/02532239
卷号	34 期号:7
摘要	The simplified modal method (SMM), which is used to estimate the initial values of grating parameters, is modified. The reflection of dielectric grating is considered. Then grating is equivalent to multilayer thin films. Associating with the modal theory, transmission efficiency is calculated, and SMM is modified. The calculation results show that deviation between this modified method and RCWA is less than 2% for TE and TM polarizations which is better than SMM. With respect to SMM, which only gives starting value of grating parameters, this method can be used to optimize the grating parameters. Contrast to RCWA, it gives a clear physical explanation of grating diffraction by considering the transmission efficiency as the result of phase shift of modes and difference of grating and aerial admittance. Then a grating beam splitter with two ports is designed and optimized by this modification of simplified modal method (MSMM), which gets a good splitting result at the band of 1020~1100 nm. The transmission efficiency of 0th and -1st order for both TE and TM polarizations is near to 50% at this band.
收录类别	EI
语种	中文
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/44009
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Wang B.,Hao P.,Wu Y.,et al. Fused-silica beam splitter grating design based on modified simplified modal method[J]. Guangxue Xuebao/Acta Optica Sinica,2014,34(7).
APA	Wang B.,Hao P.,Wu Y.,&Li Y..(2014).Fused-silica beam splitter grating design based on modified simplified modal method.Guangxue Xuebao/Acta Optica Sinica,34(7).
MLA	Wang B.,et al."Fused-silica beam splitter grating design based on modified simplified modal method".Guangxue Xuebao/Acta Optica Sinica 34.7(2014).

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