Birefringence induced Vernier effect in optical fiber modal interferometers for enhanced sensing

• Main Authors: Li, Kaiwei, Zhang, Nan, Zhang, Nancy Meng Ying, Zhou, Wenchao, Zhang, Ting, Chen, Ming, Wei, Lei
• Other Authors: School of Electrical and Electronic Engineering
• Format: Article
• Language: English
• Published: 2019
• Subjects: Engineering::Electrical and electronic engineering; Optical Fiber Sensors; Optical Microfiber Couplers
• Online Access: https://hdl.handle.net/10356/80530; http://hdl.handle.net/10220/50377
• Institution: Nanyang Technological University

We report a simple and effective method to improve the sensitivities of fiber-optic modal interferometers with birefringence induced Vernier effect. Taking optical microfiber coupler as an example, we study the sensitivity enhancement of a microfiber coupler for refractive index (RI) sensing both th...