Nano-antenna based optical fiber probe

Jun Bum Park, Jinsik Kim, Sookyoung Roh, Dawoon Choi, Hyun Joon Shin, Byoungho Lee

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

Abstract

We propose a resonant optical Yagi-Uda nano-antenna fabricated at the end of the optical fiber probe for the sake of extracting the information of the angular directivity by absorption of directional emission as a subwavelength optical microscopy. A Yagi-Uda nano-antenna consists of a feed element surrounded by a reflector and three directors. The reflector and directors are optimized in pitches with regards to resonance of the antenna elements using the finiteelement method. We used a focused ion beam (FIB) to cut the end of the fiber probe tip away and make the flattened surface to mount the metal nano-antenna structure, followed by FIB platinum deposition patterning for the nano-antenna. To verify the characteristics of the probe based nano-antenna, directional emission from the metal slit with asymmetric metallic surface gratings is probed and detected using the photomultiplier tube. Our approach of the nano-antenna based fiber probe is suitable for scanning applications such as detection of directional emission.

Original languageEnglish
Title of host publicationPhotonic Fiber and Crystal Devices
Subtitle of host publicationAdvances in Materials and Innovations in Device Applications V
DOIs
StatePublished - 2011
EventPhotonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications V - San Diego, CA, United States
Duration: 21 Aug 201122 Aug 2011

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume8120
ISSN (Print)0277-786X

Conference

ConferencePhotonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications V
Country/TerritoryUnited States
CitySan Diego, CA
Period21/08/1122/08/11

Keywords

  • nano-antenna
  • optical fiber probe tip
  • surface plasmon resonance

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