Continuously apodized fiber-to-chip surface grating coupler with refractive index engineered subwavelength structure

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DOIResolve DOI: http://doi.org/10.1364/OL.35.003243
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TypeArticle
Journal titleOPTICS LETTERS
ISSN0146-9592
1539-4797
Volume35
Issue19
Pages32433245; # of pages: 3
AbstractWe demonstrate a fully etched, continuously apodized fiber-to-chip surface grating coupler for the first time (to our knowledge). The device is fabricated in a single-etch step and operates with TM-polarized light, achieving a coupling efficiency of 3:7 dB and a 3 dB bandwidth of 60 nm. A subwavelength microstructure is employed to generate an effective medium engineered to vary the strength of the grating and thereby maximize coupling efficiency, while mitigating backreflections at the same time. Minimum feature size is 100 nm for compatibility with deep-UV 193 nm lithography.
Publication date
PublisherOptical Society of America
LanguageEnglish
AffiliationNRC Institute for Microstructural Sciences; NRC Genomics and Health Initiative; National Research Council Canada
Peer reviewedNo
NPARC number17162595
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Record identifiera5dad129-0899-463a-9c49-5e686f2cfe8e
Record created2011-03-26
Record modified2016-05-09
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