{"title":"Design of Long-Period Grating Couplers Based on Asymmetric Dual-Core Fibres","authors":"F. Chan, K. Yasumoto","doi":"10.1109/ICEAA.2007.4387437","DOIUrl":null,"url":null,"abstract":"We demonstrate a grating coupler using an asymmetric dual-core fibre with a pair of long-period gratings (LPGs). Simple formulas for the achievement of high coupling efficiency are derived and the results are compared with reported LPG couplers based on two discrete fibres. Our results show that with a proper choice of grating parameters, the coupling efficiency reaches 100%. A passing band with steep band transitions and side lobes less than ~25 dB can be achieved.","PeriodicalId":273595,"journal":{"name":"2007 International Conference on Electromagnetics in Advanced Applications","volume":"6 5 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2007-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2007 International Conference on Electromagnetics in Advanced Applications","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ICEAA.2007.4387437","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 1
Abstract
We demonstrate a grating coupler using an asymmetric dual-core fibre with a pair of long-period gratings (LPGs). Simple formulas for the achievement of high coupling efficiency are derived and the results are compared with reported LPG couplers based on two discrete fibres. Our results show that with a proper choice of grating parameters, the coupling efficiency reaches 100%. A passing band with steep band transitions and side lobes less than ~25 dB can be achieved.
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