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Silicon-on-Insulator Polarization Beam Splitter Based on a Taper Asymmetrical Directional Coupler

Polarization dependences of optical devices in highly-integrated optical systems become a major problem. To overcome this issue, one can implement polarization diversity scheme to achieve a single polarization on-chip network. One of the essential components in a polarization diversity scheme is the polarization beam splitter (PBS). In this thesis, we will a PBS based on a silicon-on-insulator (SOI) platform with reduced device size and broad operation bandwidth.
We use the three-dimensional Finite-Difference Time-Domain (3D-FDTD) method to perform the simulation. First, we use two asymmetric waveguides to design an asymmetric directional coupler with only TE-like mode phase matching condition. We then tape the lower waveguide to keep the TE-polarized light, and split the TE- and TM- polarized light. By utilizing an asymmetrical directional coupler with a tapered waveguide, we have achieved a 7.3

Identiferoai:union.ndltd.org:NSYSU/oai:NSYSU:etd-0725112-182701
Date25 July 2012
CreatorsXiao, Min-Yuan
ContributorsChin-Ping Yu, Yi-Jen Chiu, Chien-Chung Lin, Yung-Jui (Ray) Chen
PublisherNSYSU
Source SetsNSYSU Electronic Thesis and Dissertation Archive
LanguageCholon
Detected LanguageEnglish
Typetext
Formatapplication/pdf
Sourcehttp://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0725112-182701
Rightsuser_define, Copyright information available at source archive

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