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Dual-function beam splitter of high contrast gratings
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作者 Wen-Jing Fang Xin-Ye Fan +3 位作者 Hui-Juan Niu Xia Zhang Heng-Ying Xu cheng-lin bai 《Chinese Physics B》 SCIE EI CAS CSCD 2021年第4期252-256,共5页
we preset the design and rabrication of a novel auai-iunction hign contrast gratings that can De usea as a polarizationselective beam splitter with transverse magnetic polarization,which performs two independent funct... we preset the design and rabrication of a novel auai-iunction hign contrast gratings that can De usea as a polarizationselective beam splitter with transverse magnetic polarization,which performs two independent functions,i.e.,reflection focusing and power equalization at a wavelength of 1550 nm.This dual-function grating profile is optimized by the rigorous coupled-wave analysis and the finite-element method.Simple analytical expressions of phase and modal guideline for the beam splitter design are given.The beam splitter based on the grating structure is experimentally studied at a distance of 160 μm from the reflection plane,the results are consistent with the theoretical results basically. 展开更多
关键词 beam splitter high contrast gratings polarization-selective FOCUSING phase modulation
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Breathers and Rogue Waves Derived from an Extended Multi-dimensional N-Coupled Higher-Order Nonlinear Schrdinger Equation in Optical Communication Systems
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作者 cheng-lin bai Yue-Jin Cai Qing-Long Luo 《Communications in Theoretical Physics》 SCIE CAS CSCD 2018年第9期255-262,共8页
In this paper, an extended multi-dimensional N-coupled higher-order nonlinear Schr¨odinger equation (NCHNLSE), which can describe the propagation of the ultrashort pulses in wavelength division multiplexing (WDM)... In this paper, an extended multi-dimensional N-coupled higher-order nonlinear Schr¨odinger equation (NCHNLSE), which can describe the propagation of the ultrashort pulses in wavelength division multiplexing (WDM)systems, is investigated. By the bilinear method, we construct the breather solutions for the extended (1+1),(2+1) and(3+1)-dimensional N-CHNLSE. The rogue waves are derived as a limiting form of breathers with the aid of symbolic computation. The effect of group velocity dispersion (GVD), third-order dispersion (TOD) and nonlinearity on breathers and rogue waves solutions are discussed in the optical communication systems. 展开更多
关键词 N-coupled higher-order nonlinear SchrSdinger equations MULTI-DIMENSIONAL rogue waves BREATHERS bilinear transformation
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