Post chemical Etching of Tapered Seven-Core Fiber Sensor for Enhanced Figure of Merit

Zhen Tian, Yicun Yao, Jinhui Yuan*, Liqiang Zhang, Nan Kuang Chen, Yanqing Zhang, Minghong Wang, Qiang Wu*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)
4 Downloads (Pure)

Abstract

A post chemical etching process to a tapered seven-core fiber (TSCF) is proposed and experimentally demonstrated to effectively adjust the mode profiles of high-order supermodes, aimed to improve the figure of merit (FOM). The experimental results show that the FOM of an etched TSCF is as high as 1431.36 1/RIU, a 7.32-times enhancement compared with that of TSCF without etching, provided the TSCF has the same taper waist diameter of 19.20 µm. The proposed method opens a new, to the best of our knowledge, method for optimizing optical fiber sensor performance.
Original languageEnglish
Pages (from-to)4672-4675
Number of pages4
JournalOptics Letters
Volume47
Issue number18
Early online date8 Sept 2022
DOIs
Publication statusPublished - 15 Sept 2022

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