Supercontinuum Micrometer-Displacement Sensor Using Single-Multi-Air-Gap-Single Mode Fiber as Sensing Probe
| Autor: | S. I. Ooi, Zian Cheak Tiu, S.N. Aidit, Harith Ahmad |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Physics
Multi-mode optical fiber business.industry Single-mode optical fiber Nonlinear optics 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Supercontinuum 010309 optics Interferometry Optics 0103 physical sciences Fusion splicing Electrical and Electronic Engineering 0210 nano-technology Air gap (plumbing) business Step-index profile Instrumentation |
| Zdroj: | IEEE Sensors Journal. 18:8275-8279 |
| ISSN: | 2379-9153 1530-437X |
| DOI: | 10.1109/jsen.2018.2864642 |
| Popis: | In this paper, a displacement sensor utilizing a Mach–Zehnder interferometer with a single-multi-air-gap-single mode (SMAS) fiber structure is proposed and demonstrated. A 30-cm-long four-mode step index fiber (FMSIF) is used as the multimode fiber in the SMAS structure, with the left end of the FMSIF fusion spliced to a 50-cm-long single-mode fiber (SMF-28). The right end of the FMSIF is aligned to another 50-cm SMF-28 on the v-groove of Fitel S178A fusion splicer but without splicing, creating an air gap with a tunable length of 0– $300~\mu \text{m}$ . The performance of the displacement sensor is investigated over the range of 1.1– $1.7~\mu \text{m}$ using a supercontinuum source. Through the experiment wavelength range, the highest sensor sensitivity is achieved at 1.7 $\mu \text{m}$ with a sensitivity of 12.3 pm/ $\mu \text{m}$ and an $R^{2}$ coefficient of 0.926. The implementation of a displacement sensor utilizing the simple and cost-effective concept of the SMAS will be beneficial for use in various areas, such as biomedicine, manufacturing, and engineering. |
| Databáze: | OpenAIRE |
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