Tapered optical fiber temperature sensor coated with DNA based biopolymer

Sanggwon Song, Seongjin Hong, Aeri Jung, Kyunghwan Oh

Research output: Contribution to journalConference articlepeer-review


We demonstrated a biocompatible temperature sensor using single mode tapered fiber and DNA-CTMA(DNA-Cetyl tri-methyl ammonium) solid film. DNA-CTMA was coated on the tapered region, which is an interferometer. The spectral change with temperature was measured due to the refractive index changes of DNA-CTMA according to temperature. The range of the temperature change was from 35 to 65°C, and the sensitivity was-0.91 nm/'C. Furthermore, confirmed that the stain sensitivity of this sensor was-19 pm/us.

Original languageEnglish
Article number1114001-220
JournalProceedings of SPIE - The International Society for Optical Engineering
Publication statusPublished - 2019
EventBiomedical Imaging and Sensing Conference 2019, BISC 2019 - Yokohama, Japan
Duration: 2019 Apr 222019 Apr 26

Bibliographical note

Publisher Copyright:
© 2019 SPIE.

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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