InGaAsP photonic crystal slot nanobeam waveguides for refractive index sensing

  • Bowen Wang
  • , Mehmet A. Dündar
  • , Richard Nötzel
  • , Fouad Karouta
  • , Sailing He
  • , Rob W. van der Heijden

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

Abstract

Results are presented on the use of InGaAsP photonic crystal nanobeam slot waveguides for refractive index sensing. These sensors are read remote-optically through photoluminescence, which is generated by built-in InGaAs quantum dots. The nanobeams are designed to maximize the electromagnetic field intensity in the slot region, which resulted in record-high sensitivities in the order of 700 nm/RIU (refractive index unit). A cavity, created by locally deflecting the two beams towards each other through overetching, is shown to improve the sensitivity by about 20%.

Original languageEnglish
Title of host publicationPhotonic and Phononic Properties of Engineered Nanostructures
PublisherSPIE
Number of pages8
ISBN (Print)9780819484833
DOIs
Publication statusPublished - 2011
EventPhotonic and Phononic Properties of Engineered Nanostructures - San Francisco, CA, United States
Duration: 24 Jan 201127 Jan 2011

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume7946
ISSN (Print)0277-786X

Conference

ConferencePhotonic and Phononic Properties of Engineered Nanostructures
Country/TerritoryUnited States
CitySan Francisco, CA
Period24/01/1127/01/11

Keywords

  • nanobeam
  • photonic crystal
  • slot

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