Highly sensitive refractive index sensor based on adiabatically tapered microfiber long period gratings

• Main Authors: Ji, Wen Bin, Tjin, Swee Chuan, Lin, Bo, Ng, Choong Leng
• Other Authors: School of Electrical and Electronic Engineering
• Format: Article
• Language: English
• Published: 2013
• Subjects: DRNTU::Engineering
• Online Access: https://hdl.handle.net/10356/99443; http://hdl.handle.net/10220/17583
• Institution: Nanyang Technological University

We demonstrate a refractive index sensor based on long period grating (LPG) inscribed in a special photosensitive microfiber with double-clad profile. The fiber is tapered gradual enough to ensure the adiabaticity of the fiber taper. In other words, the resulting insertion loss is sufficient small....