Abstract

A family of differentially connected, multimode fiber reflectometers is described, which detects absolute position of a specularly or diffusely reflecting linear or point target. Low noise-equivalent displacement (0.026 nm/√Hz) and bipolar output make this sensor type ideal for use with feedback controlled mechanical stages with submicron precision. Several algorithms for estimating the location of the target point from reflected intensities are investigated and compared through high-resolution error surface plotting.

© 1985 Optical Society of America

One- and two-dimensional single-mode differential fiber-optic displacement sensor for submillimeter measurements

Vincent Trudel and Yves St-Amant
Appl. Opt. 47(8) 1082-1089 (2008)

Development of a differential optical-fiber displacement sensor

Fukuo Suganuma, Atsushi Shimamoto, and Kohichi Tanaka
Appl. Opt. 38(7) 1103-1109 (1999)

One-dimensional single-mode fiber-optic displacement sensors for submillimeter measurements

Vincent Trudel and Yves St-Amant
Appl. Opt. 48(26) 4851-4857 (2009)

Development of a differential, optical, reflective displacement sensor by use of a multilayered waveguide

Fukuo Suganuma, Atsushi Shimamoto, and Kohichi Tanaka
Appl. Opt. 39(31) 5745-5749 (2000)

Optical fiber sensor based on differential spectroscopic absorption

A. Safaai-Jazi, C. K. Jen, and G. W. Farnell
Appl. Opt. 24(15) 2341-2345 (1985)