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

Qiang Wu, Jinhui Yuan, Chongxiu Yu, Xinzhu Sang, Lipeng Sun, Jie Li, Tuan Guo, Baiou Guan, Hau Ping Chan, Kin Seng Chiang, Youqiao Ma, Pengfei Wang, Yuliya Semenova, Gerald Farrell

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

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
Original languageEnglish
Pages (from-to)6521
JournalOptics Letters
Volume39
Issue number22
DOIs
Publication statusPublished - 2014

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