Abstract
Abstract A side-polished plastic optical fiber (POF) was proposed for liquid’s refractive index (RI) measurement. The POF was polished into an arc shape on the surface of the fiber for increasing its RI sensitivity. The experiment shows that the straight side-polished POFs are not sensitive enough as the RI probes. After the straight side-polished POFs were bent into the U-shaped probes, the sensitivities were markedly increased. By changing the structural parameters, the RI sensing performance of the U-shaped probe was optimized, a sensitivity of 864%/RIU with a resolution of 3.3 × 10−4/RIU in the RI range of 1.33–1.44 was obtained. In addition, the characteristic of the temperature dependence of the sensor was presented. The sensor is a low cost solution for RI sensing applications which has the features of simple structure, compact size, and intensity modulation at visible wavelength.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
