Main > Chinese Optics Letters >  Volume 13 >  Issue 9 >  Page 091301 > Article
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  • Received: Apr. 9, 2015

    Accepted: Jun. 30, 2015

    Posted: Jan. 23, 2019

    Published Online: Sep. 14, 2018

    The Author Email: Junbo Yang (yangjunbo008@sohu.com)

    DOI: 10.3788/COL201513.091301

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    Jingjing Zhang, Junbo Yang, Huanyu Lu, Wenjun Wu, Jie Huang, Shengli Chang. Polarization-independent grating coupler based on silicon-on-insulator[J]. Chinese Optics Letters, 2015, 13(9): 091301

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(nw2Neff2)1/2·2πλa=mπ+tan1[C1·(Neff2nc2nw2Neff2)1/2]+tan1[C2·(Neff2ns2nw2Neff2)1/2]{C1=C2=1(TEmode)C1=(nw/nc)2;C2=(nw/ns)2(TMmode),(1)

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T(Neff+sinθ)=mλ,m=0,±1,±2,(2)

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Neff={fn12+(1f)n22(TEmode)1fn12+(1f)n22(TMmode),(3)

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fn12+(1f)n221fn12+(1f)n22=λT,(4)

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