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Design of a barcode-like waveguide nanostructurefor efficient chip–fiber coupling

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Abstract

A barcode-like waveguide nanostructure with discretized multilevel pixel lines is designed and optimized by a nonlinear search algorithm. We obtain the design of a one-dimensional multilevel nanostructure with ?1.04 dB efficiency for surface normal coupling to a standard single-mode fiber. Another design is achieved from the automatic optimization process, which enables polarization-independent coupling to a single-mode fiber. The optimum coupling efficiency is simulated to be ?2.83 dB for TE and ?3.49 for TM polarization centered near the 1550 nm wavelength. Polarization-dependent loss of less than 1 dB over 45.3 nm is achieved.

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DOI:10.1364/prj.4.000209

基金项目:National Natural Science Foundation of China (NSFC) (61505039); Shenzhen Municipal Science and Technology Plan Project (JCYJ20150403161923530).

收稿日期:2016-06-24

录用日期:2016-08-24

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作者单位    点击查看

Xiang Wen:Department of Electronic and Information Engineering, Harbin Institute of Technology, Shenzhen Graduate School, The University Town of Shenzhen, Xili, Shenzhen, China
Ke Xu:Department of Electronic and Information Engineering, Harbin Institute of Technology, Shenzhen Graduate School, The University Town of Shenzhen, Xili, Shenzhen, China
Qinghai Song:Department of Electronic and Information Engineering, Harbin Institute of Technology, Shenzhen Graduate School, The University Town of Shenzhen, Xili, Shenzhen, China

联系人作者:Ke Xu(kxu@hitsz.edu.cn)

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引用该论文

Xiang Wen, Ke Xu, and Qinghai Song, "Design of a barcode-like waveguide nanostructurefor efficient chip–fiber coupling," Photonics Research 4(6), 209-213 (2016)

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