Fiber-Optic Pyrometer with Optically Powered Switch for Temperature Mesurements Articles uri icon

publication date

  • February 2018

start page

  • 483-1

end page

  • 483-10

issue

  • 2

volume

  • 18

international standard serial number (ISSN)

  • 1424-8220

abstract

  • We report the experimental results on a new infrared fiber-optic pyrometer for very localized and high-speed temperature measurements ranging from 170 to 530 degrees C using low-noise photodetectors and high-gain transimpedance amplifiers with a single gain mode in the whole temperature range. We also report a shutter based on an optical fiber switch which is optically powered to provide a reference signal in an optical fiber pyrometer measuring from 200 to 550 degrees C. The tests show the potential of remotely powering via optical means a 300 mW power-hungry optical switch at a distance of 100 m, avoiding any electromagnetic interference close to the measuring point.

keywords

  • contactless temperature sensor; fiber-optic; pyrometer; optical switch; power over fiber;
    optical chopper; lock-in amplifier