Doubled optical path length for photonic bandgap fiber gas cell using micromirror

Xuefeng Li*, Jinxing Liang, Hiroshi Oigawa, Toshitsugu Ueda

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)


In this paper, we presented the double optical path length of a photonic bandgap fiber (PBGF) gas cell. The gas sensor sensitivity can be improved by a two fold lengthening of the optical length without changing the gas fluid. Furthermore, a high-reflection micromirror was included in the proposed double optical path length gas cell. A Cr/Au sputtering process was applied to fabricate the vertical micromirror using a single-mode fiber (SMF). A measurement system for low gas concentrations based on the micromirror has been implemented, and sensitivity was improved without increasing the response time.

Original languageEnglish
Article number06GM01
JournalJapanese Journal of Applied Physics
Issue number6 PART 2
Publication statusPublished - 2011 Jun

ASJC Scopus subject areas

  • General Engineering
  • General Physics and Astronomy


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