Mode Analysis of Beam Splitter for Slanted Grating

CORC > 上海光学精密机械研究所 > 中国科学院上海光学精密机械研究所 > 信息光学与光电技术实验室

	Mode Analysis of Beam Splitter for Slanted Grating
	Li, Shubin ; Zhou, Changhe ; Li, Yanyang ; Lu, Yancong ; Wang, Jin ; Liu, Kun ; Wu, Jun
	2014
会议名称	conference on holography, diffractive optics, and applications vi
通讯作者	zhou, ch (reprint author), acad sinica, shanghai inst opt & fine mech, lab informat opt & optoelect tech, pob 800-211, shanghai 201800, peoples r china.
英文摘要	beam splitters are widely used in various optical modern systems for separating optical wave into different directions. we have proposed a novel slanted grating for beam splitter at the central wavelength of 1550nm, which can be used in the optical communication. with the simulated annealing algorithm, beam splitter slanted grating can be optimized by using the rigorous coupled wave analysis (rcwa). the diffraction process can be analyzed by the simplified modal method. the simplified modal method, without complicated calculation, reduces the difficult diffraction process into a vividly and physical modal. we have derived an analytical expression which can provide an insightful physical description of the simplified modal method for the slanted grating. compared with the rectangular grating, the slanted grating has the asymmetric physical structure. therefore, the odd grating mode can also be excited in the slanted grating under normal incidence. the odd grating mode, which only exists in the asymmetric structure, plays the role of breaking the symmetric field distribution in the output plane. the physical analytical expression of mode conversion and coupling for the slanted grating can be obtained to interpretation the asymmetric field distribution. numerical results obtained by the rigorous coupled wave analysis verified the validity of the simplified modal method. we expect the modal method for the slanted grating set forth in this work should be helpful for the tremendous potential application of the slanted grating.
收录类别	CPCI
会议录	holography, diffractive optics, and applications vi
会议录出版者	spie-int soc optical engineering
语种	英语
内容类型	会议论文
源URL	[http://ir.siom.ac.cn/handle/181231/17226]
专题	上海光学精密机械研究所_信息光学与光电技术实验室
作者单位	1.[Li, Shubin 2.Zhou, Changhe 3.Li, Yanyang 4.Lu, Yancong 5.Wang, Jin 6.Liu, Kun 7.Wu, Jun] Acad Sinica, Shanghai Inst Opt & Fine Mech, Lab Informat Opt & Optoelect Tech, Shanghai 201800, Peoples R China
推荐引用方式 GB/T 7714	Li, Shubin,Zhou, Changhe,Li, Yanyang,et al. Mode Analysis of Beam Splitter for Slanted Grating[C]. 见:conference on holography, diffractive optics, and applications vi.