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

doi:10.1364/OL.42.001943

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

Department of Physics

Research output: Contribution to journal › Article

16 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 language	English
Pages (from-to)	1943-1945
Number of pages	3
Journal	Optics Letters
Volume	42
Issue number	10
DOIs	https://doi.org/10.1364/OL.42.001943
Publication status	Published - 2017 May 15

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All Science Journal Classification (ASJC) codes

Atomic and Molecular Physics, and Optics

Cite this

Hong, S., Jung, W., Nazari, T., Song, S., Kim, T., Quan, C., & Oh, K. (2017). Thermo-optic characteristic of DNA thin solid film and its application as a biocompatible optical fiber temperature sensor. Optics Letters, 42(10), 1943-1945. https://doi.org/10.1364/OL.42.001943

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AU - Quan, Chai

AU - Oh, Kyunghwan

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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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10.1364/OL.42.001943