Multimode interference self-imaging optical fiber sensor based on sol-gel silica for methane detection

• Main Authors: Mat Zain, Muhamad Fairul Izwan, Husein, Nor Ain
• Format: Conference or Workshop Item
• Language: English
• Published: 2023
• Subjects: QC Physics
• Online Access: http://eprints.utm.my/107983/1/NorAinHusein2023_MultimodeInterferenceSelfImagingOpticalFiber.pdf; http://eprints.utm.my/107983/; http://dx.doi.org/10.1088/1742-6596/2432/1/012014
• Institution: Universiti Teknologi Malaysia

We reported a multimode interference (MMI) sensor based on single mode fiber-no core fiber-single mode fiber (SMF-NCF-SMF) structure incorporated with silica sol-gel nanostructure for detection of methane. Due to the core mismatch between SMF and NCF, a number of higher order modes was excited at th...