Highly sensitive gas refractometers based on optical microfiber modal interferometers operating at dispersion turning point

• Main Authors: Zhang, Nancy Meng Ying, Li, Kaiwei, Zhang, Nan, Zheng, Yu, Zhang, Ting, Qi, Miao, Shum, Ping, Wei, Lei
• Other Authors: School of Electrical and Electronic Engineering
• Format: Article
• Language: English
• Published: 2019
• Subjects: Optical Microfiber Modal Interferometers; Gas Refractometers; DRNTU::Engineering::Electrical and electronic engineering
• Online Access: https://hdl.handle.net/10356/81705; http://hdl.handle.net/10220/47500
• Institution: Nanyang Technological University

In most fiber-optic gas sensing applications where the interested refractive index (RI) is ~1.0, the sensitivities are greatly constrained by the large mismatch between the effective RI of the guided mode and the RI of the surrounding gaseous medium. This fundamental challenge necessitates the devel...