Abstract
An intensity modulation-based fiber optics refractive index (RI) measurement sensor is designed by using macro-bending the probe. After removal of cladding and macro bending, sensor becomes more sensitive for change in RI of analyte. The principle is based on evanescent field, intensity modulation and macro bending loss concept. This has been done by removing cladding portion in sensing region and then macro bending clad removed portion in U shape using thermal heating. The RI measurement with fiber optic sensor (FOS) is done by doing the geometric changes in sensor probe such as changing sensing region length in clad removed area, macro bending sensing region and by using multiwavelength LEDs as a light source. The wavelengths of LED falls in the visible spectrum. The sensitivity of sensor found to be good in the RI range of 1.33 to 1.41. The proposed RI sensor is compact, simple in design and less expensive and can be used in food and medical industry.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: 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.