Polarization-independent vertical coupler for photonics integration

We present the first systematic design approach for compact polarization-independent mode-size transformers based on tapered resonant vertical couplers with transfer efficiencies greater than 90%. Resonant coupling occurs at a critical taper width having equal TE and TM effective index. Being polari...

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Bibliographic Details
Published inOptics express Vol. 12; no. 1; pp. 117 - 123
Main Authors Chin, Mee-Koy, Lee, Chee-Wei, Shen, Jinyuan
Format Journal Article
LanguageEnglish
Published United States 12.01.2004
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Summary:We present the first systematic design approach for compact polarization-independent mode-size transformers based on tapered resonant vertical couplers with transfer efficiencies greater than 90%. Resonant coupling occurs at a critical taper width having equal TE and TM effective index. Being polarization-independent broadens the usefulness of vertical coupler as a building block for minimizing insertion loss in photonic integrated circuits.
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ISSN:1094-4087
1094-4087
DOI:10.1364/OPEX.12.000117