Advances in optical fiber photothermal interferometry for gas detection

Yin Ping Miao, Wei Jin, Fan Yang, Yue Chuan Lin, Yan Zhen Tan, Lut Ho Hoi

Research output: Journal article publicationReview articleAcademic researchpeer-review

11 Citations (Scopus)


We report our recent work on the development of a highly sensitive gas detection technique-photothermal interferometry spectroscopy with hollow-core optical fibers. The basic principle of operation, generation and detection of dynamic photothermal phase modulation, and method to improve the response time of the hollow-core fiber sensors are described. The technique has ultra-high sensitivity and dynamic range, and the measurement is not affected by reflection/scattering and other non-absorbing losses. Sensors based on such a technique could be made compact in size with remote detection, multiplexing and networking capability, which would enable a range of high performance applications in environmental, medical and safety monitoring.
Original languageEnglish
Article number074212
JournalWuli Xuebao/Acta Physica Sinica
Issue number7
Publication statusPublished - 5 Apr 2017


  • Gas sensor
  • Hollow-core photonics bandgap fiber
  • Optical fiber interferometry
  • Optical fiber sensor
  • Photothermal spectroscopy

ASJC Scopus subject areas

  • General Physics and Astronomy


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