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 language | English |
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Pages (from-to) | 4672-4675 |
Number of pages | 4 |
Journal | Optics Letters |
Volume | 47 |
Issue number | 18 |
Early online date | 8 Sept 2022 |
DOIs | |
Publication status | Published - 15 Sept 2022 |