The effect of birefringence induced in a single-mode fiber by a lateral force has been applied to measure the absolute value of force or pressure with high resolution. A sensor configuration with an extended detecting surface has been investigated by means of calibrated weights. The sensor is sensitive to an incremental force of 2 × 10−3 N, independently of the length of the fiber. The maximum force applied was 10 N/m of fiber length.
© 1986 Optical Society of America
Original Manuscript: July 18, 1985
Published: February 1, 1986
A. Bertholds and R. Dändliker, "High-resolution photoelastic pressure sensor using low-birefringence fiber," Appl. Opt. 25, 340-343 (1986)