Nanostructured sapphire optical fiber for evanescent-field sensing

Hui Chen, Fei Tian, Jiri Kanka, Henry Du

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

Abstract

We report an innovative and scalable strategy of transforming a commercial unclad sapphire optical fiber to an all-alumina nanostructured sapphire optical fiber (NSOF). The strategy entails fiber coating with metal aluminum followed by anodization to form alumina cladding of highly organized pore channel structure. We experimentally demonstrated Ag nanoparticles (NPs)-enabled NSOF for SERS sensing of 10-6 M Rhodamine 6G (R6G) after thermal treatment at 500 °C for 6 hours. We numerically show that AAO cladding significantly increases the evanescent-field overlap, lower porosity of AAO results in higher evanescent-field overlap.

Original languageEnglish
Title of host publicationProceedings of Frontiers in Optics 2015, FIO 2015
ISBN (Electronic)9781943580033
DOIs
StatePublished - 2015
EventFrontiers in Optics 2015, FIO 2015 - San Jose, United States
Duration: 18 Oct 201522 Oct 2015

Publication series

NameProceedings of Frontiers in Optics 2015, FIO 2015

Conference

ConferenceFrontiers in Optics 2015, FIO 2015
Country/TerritoryUnited States
CitySan Jose
Period18/10/1522/10/15

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