title: Refractive index sensor based on an abrupt taper Michelson interferometer in a single-mode fiber.
abstract: A simple refractive index sensor based on a Michelson interferometer in a single-mode fiber is constructed and demonstrated. The sensor consists of a single symmetrically abrupt taper region in a short piece of single-mode fiber that is terminated by approximately 500 nm thick gold coating. The sensitivity of the new sensor is similar to that of a long-period-grating-type sensor, and its ease of fabrication offers a low-cost alternative to current sensing applications.
authors.affiliation: Department of Physics, Engineering Physics, and Astronomy, Queen's University, Kingston, Ontario, K7L 3N6, Canada. tianzhaobing@gmail.com
authors.forename: Zhaobing
authors.initials: Z
authors.lastname: Tian
authors.forename: Scott S-H
authors.initials: SS
authors.lastname: Yam
authors.forename: Hans-Peter
authors.initials: HP
authors.lastname: Loock