{"title":"A novel wavelength sensor using a structure of optical directional coupler","authors":"K. Sae-tang, S. Somkuarnpanit, S. Khuntaweetep","doi":"10.1109/FOPC.2002.1015833","DOIUrl":null,"url":null,"abstract":"The finite-difference time-domain (FDTD) is used in an analysis of the field intensity of light propagating through the structure. The device with width of 0.4 /spl mu/m and thickness of 0.4 /spl mu/m, which corresponding to the coupling length of 40 /spl mu/m, provides a linear relationship between the coupling efficiency against wavelength. The device can sense the wavelength in a range between 1.5 /spl mu/m and 1.6 /spl mu/m, with continuous resolution. The wide wavelength could also be achieved by paralleling the light to a number of wavelength-sensing modules with particular required bands. Therefore, it could be employed for wavelength sensing for most optical communications, optoelectronics, laser applications etc.","PeriodicalId":117784,"journal":{"name":"Proceedings of 2002 IEEE/LEOS Workshop on Fibre and Optical Passive Components (Cat.No.02EX595)","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2002-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"7","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings of 2002 IEEE/LEOS Workshop on Fibre and Optical Passive Components (Cat.No.02EX595)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/FOPC.2002.1015833","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 7
Abstract
The finite-difference time-domain (FDTD) is used in an analysis of the field intensity of light propagating through the structure. The device with width of 0.4 /spl mu/m and thickness of 0.4 /spl mu/m, which corresponding to the coupling length of 40 /spl mu/m, provides a linear relationship between the coupling efficiency against wavelength. The device can sense the wavelength in a range between 1.5 /spl mu/m and 1.6 /spl mu/m, with continuous resolution. The wide wavelength could also be achieved by paralleling the light to a number of wavelength-sensing modules with particular required bands. Therefore, it could be employed for wavelength sensing for most optical communications, optoelectronics, laser applications etc.
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