Razali, Nazirah Mohd and Lokman, Muhammad Quisar and Zuikafly, Siti Nur Fatin and Ahmad, Fauzan and Rahman, Mohd Azizi Abdul and Yahaya, Hafizal and Harun, Sulaiman Wadi (2022) No-core fiber by self-image length optimization for optical based refractive index sensor. Optical Fiber Technology, 74. ISSN 1068-5200, DOI https://doi.org/10.1016/j.yofte.2022.103133.
Full text not available from this repository.Abstract
No-core fiber has been widely demonstrated as an alternative refractive index sensor over conventional optical fiber sensors. However, previous works demonstrated that the self-image length optimization of this sensor only focused on simulation and formed a conclusion without data analysis. Hence, the sensitivity provided does not follow the standard unit, providing a limited evaluation of the sensitivity for refractive index measurement. This paper investigates the no-core fiber at a fixed diameter of 125 mu m and varies the length based on the self-image index ranging from 1 to 4 indexes to evaluate the sensor sensitivity at the analyte refractive index ranging from 1.3000 RIU to 1.4000 RIU via experimental study. The results showed that the dip wavelength shift non-linearly increased for all the samples as the analyte refractive index increased. The overall analysis showed that there were significant changes in the sensitivity between the odd and even self-image indexes, and there were no significant sensitivity changes between them. The best sensor performance was achieved by the NCF length of 2.90 cm with two self-image indexes. The sensitivity achieved by the sensor was 104.64 nm/RIU and 241.30 nm/ RIU for analyte refractive index ranging from 1.3000 RIU to 1.3600 RIU and 1.36000 RIU to 1.4000 RIU, respectively, via a linear fitting plot. Meanwhile, the figure merit value obtained by the sensor was 1.45 RIU-1 and 3.75 RIU-1 at analyte RI of 1.3600 RIU and 1.4000 RIU, respectively. In the future, this can be used as a reference for no core fiber length optimization.
| Item Type: | Article |
|---|---|
| Funders: | None |
| Uncontrolled Keywords: | No-core fiber; Self-image; Refractive index; Sensitivity |
| Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering |
| Divisions: | Faculty of Engineering > Department of Electrical Engineering |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 22 Nov 2023 09:13 |
| Last Modified: | 22 Nov 2023 09:13 |
| URI: | http://eprints.um.edu.my/id/eprint/40347 |
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