Highly sensitive refractive index sensor based on two cascaded microfiber knots with vernier effect

• Main Authors: Sun, Qizhen, Jia, Weihua, Shum, Perry Ping, Liu, Deming, Xu, Zhilin
• Other Authors: School of Electrical and Electronic Engineering
• Format: Conference or Workshop Item
• Language: English
• Published: 2014
• Subjects: DRNTU::Engineering::Electrical and electronic engineering
• Online Access: https://hdl.handle.net/10356/104853; http://hdl.handle.net/10220/20343; http://proceedings.spiedigitallibrary.org/proceeding.aspx?articleid=1877956
• Institution: Nanyang Technological University

A highly sensitive refractive index (RI) sensor based on two cascaded microfiber knots with vernier effect is proposed and demonstrated by theoretical arithmetic. Deriving from high proportional evanescent field of microfiber and sharp spectrum fringes induced by vernier effect, a slight change of a...