UV exposure on a single-mode fiber within a multimode interference structure

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

3 Scopus Citations
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Author(s)

  • Qiang Wu
  • Jinhui Yuan
  • Chongxiu Yu
  • Xinzhu Sang
  • Lipeng Sun
  • Jie Li
  • Tuan Guo
  • Baiou Guan
  • Youqiao Ma
  • Pengfei Wang
  • Yuliya Semenova
  • Gerald Farrell

Related Research Unit(s)

Detail(s)

Original languageEnglish
Pages (from-to)6521-6524
Journal / PublicationOptics Letters
Volume39
Issue number22
Publication statusPublished - 15 Nov 2014

Abstract

We experimentally study the effects of UV exposure on a single-mode fiber (SMF) with a fiber multimode interferometer (MMI) based on the singlemode-multimode-singlemode-multimode-singlemode (SMSMS) fiber structure. We observe a wavelength shift of over 33 nm when irradiating the central SMF in the SMSMS fiber structure with a 3-mm-width UV beam (the UV laser has a wavelength of 193 nm and pulse energy of 3 mJ). According to our numerical simulation, the SMSMS fiber structure can achieve a very high refractive-index (RI) sensitivity of 67670 nm/RIU with a very good linearity of R2 ∼ 0.9999. The structure can find potential application for high-sensitivity RI sensing by replacing the central SMF with a hollow-core optical fiber filled with the sample under test. The UV exposure technique can be used for tuning the characteristics of fiber MMI devices.

Citation Format(s)

UV exposure on a single-mode fiber within a multimode interference structure. / Wu, Qiang; Yuan, Jinhui; Yu, Chongxiu; Sang, Xinzhu; Sun, Lipeng; Li, Jie; Guo, Tuan; Guan, Baiou; Chan, Hauping; SengChiang, Kin; Ma, Youqiao; Wang, Pengfei; Semenova, Yuliya; Farrell, Gerald.

In: Optics Letters, Vol. 39, No. 22, 15.11.2014, p. 6521-6524.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal