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Minus second-order reflector by bullet-alike grating

CHEN FU1, BO WANG1,2,* , ZHISEN HUANG1, ZEFAN LIN1, KUNHUA WEN1, ZIMING MENG1, ZHAOGANG NIE1, FANGTENG ZHANG1, XIANGJUN XING1, LI CHEN1, LIANG LEI1, JINYUN ZHOU1

Affiliation

  1. School of Physics and Optoelectronic Engineering, Guangdong University of Technology, Guangzhou 510006, China
  2. Guangdong Provincial Key Laboratory of Information Photonics Technology, Guangdong University of Technology, Guangzhou 510006, China

Abstract

A polarization-independent bullet-alike reflection grating under second Bragg incidence is proposed, which can diffract the energy of TE-polarized light and TM-polarized light to -2nd order. Structural parameters can be obtained by using the finite element method, where efficiencies are 96.66% under TE polarization and 96.39% under TM polarization. Diffraction efficiencies of greater than 92% can be obtained in a 100 nm bandwidth (from 2710 to 2810 nm) for the -2nd order of both TEand TM-polarized waves. After analysis, the grating has a large manufacturing tolerance and will have a good application prospect in the optical communication industry.

Keywords

Polarization independence, Minus second-order, Bullet-alike grating, The finite element method.

Citation

CHEN FU, BO WANG, ZHISEN HUANG, ZEFAN LIN, KUNHUA WEN, ZIMING MENG, ZHAOGANG NIE, FANGTENG ZHANG, XIANGJUN XING, LI CHEN, LIANG LEI, JINYUN ZHOU, Minus second-order reflector by bullet-alike grating, Optoelectronics and Advanced Materials - Rapid Communications, 15, 5-6, May-June 2021, pp.240-244 (2021).

Submitted at: Oct. 8, 2020

Accepted at: June 11, 2021