Fiber-Optic Sensors: Technical and Market Trends

Progress in the area of fiber-optic sensors throughout the world since 1990 is analyzed. Current technical and market trends as well as the use of sensors in industry and health care are considered. Market forecasts for the use of fiber-optic sensors are given.     

Investigation of pressure transducers based on w-fiber waveguides

Translated from Izmeritel'naya Tekhnika, No. 5, pp. 17–19, May, 1991.     

A Polarizable Pressure Gage Based on Optical Fibers

A highly sensitive polarizable pressure gage, based on the effect of birefringence in single-mode optical fibers wound on ribbed frames, is described. The measured sensitivity of the gage is 13 × 10⁻² dB/Pa m.__________Translated from Pribory i Tekhnika Eksperimenta, No. 4, 2005, pp. 134–136.Original Russian Text Copyright © 2005 by Rzhavin.     

Highly-sensitive pressure sensor based on W-lighguides

A highly sensitive pressure sensor based on two Mach-Zender interferometers is described. The interferometer measuring and reference channels are made of single-mode W-lightguides. The measured sensitivity was shown experimentally to be 65·10⁻² dB·P⁻¹·m⁻¹. Translated from Izmeritel'naya Tekhnia, pp. 43–46, September, 1999.     

Fiber-Optic Polarization Pressure Sensor

The highly sensitive polarization pressure sensor is based on single-mode fiber-optic waveguides. The measured sensitivity has been found experimentally to be 13·10_–2 dB·Pa_–1·m_–1. A /4 phase plate was used as an optical decoupler in the sensor.