Thermo-optic characteristic of DNA thin solid film and its application as a biocompatible optical fiber temperature sensor

Seongjin Hong, Woohyun Jung, Tavakol Nazari, Sanggwon Song, Taeoh Kim, Chai Quan, Kyunghwan Oh

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

We report unique thermo-optical characteristics of DNA-Cetyl tri-methyl ammonium (DNA-CTMA) thin solid film with a large negative thermo-optical coefficient of -3.4 × 10 -4 /°C in the temperature range from 20°C to 70°C without any observable thermal hysteresis. By combining this thermo-optic DNA film and fiber optic multimode interference (MMI) device, we experimentally demonstrated a highly sensitive compact temperature sensor with a large spectral shift of 0.15 nm/°C. The fiber optic MMI device was a concatenated structure with single-mode fiber (SMF)-coreless silica fiber (CSF)-single mode fiber (SMF) and the DNA-CTMA film was deposited on the CSF. The spectral shifts of the device in experiments were compared with the beam propagation method, which showed a good agreement.

Original languageEnglish
Pages (from-to)1943-1945
Number of pages3
JournalOptics Letters
Volume42
Issue number10
DOIs
Publication statusPublished - 2017 May 15

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temperature sensors
deoxyribonucleic acid
optical fibers
optics
fibers
fiber optics
silicon dioxide
interference
shift
hysteresis
propagation
coefficients
temperature

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

Cite this

Hong, Seongjin ; Jung, Woohyun ; Nazari, Tavakol ; Song, Sanggwon ; Kim, Taeoh ; Quan, Chai ; Oh, Kyunghwan. / Thermo-optic characteristic of DNA thin solid film and its application as a biocompatible optical fiber temperature sensor. In: Optics Letters. 2017 ; Vol. 42, No. 10. pp. 1943-1945.
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Thermo-optic characteristic of DNA thin solid film and its application as a biocompatible optical fiber temperature sensor. / Hong, Seongjin; Jung, Woohyun; Nazari, Tavakol; Song, Sanggwon; Kim, Taeoh; Quan, Chai; Oh, Kyunghwan.

In: Optics Letters, Vol. 42, No. 10, 15.05.2017, p. 1943-1945.

Research output: Contribution to journalArticle

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AU - Quan, Chai

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AB - We report unique thermo-optical characteristics of DNA-Cetyl tri-methyl ammonium (DNA-CTMA) thin solid film with a large negative thermo-optical coefficient of -3.4 × 10 -4 /°C in the temperature range from 20°C to 70°C without any observable thermal hysteresis. By combining this thermo-optic DNA film and fiber optic multimode interference (MMI) device, we experimentally demonstrated a highly sensitive compact temperature sensor with a large spectral shift of 0.15 nm/°C. The fiber optic MMI device was a concatenated structure with single-mode fiber (SMF)-coreless silica fiber (CSF)-single mode fiber (SMF) and the DNA-CTMA film was deposited on the CSF. The spectral shifts of the device in experiments were compared with the beam propagation method, which showed a good agreement.

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