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Applied Optics

Applied Optics


  • Vol. 24, Iss. 15 — Aug. 1, 1985
  • pp: 2369–2372

One- and two-dimensional, differential, reflective fiber displacement sensors

Mark Johnson and Gabriel Goodman  »View Author Affiliations

Applied Optics, Vol. 24, Issue 15, pp. 2369-2372 (1985)

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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

Original Manuscript: February 27, 1985
Published: August 1, 1985

Mark Johnson and Gabriel Goodman, "One- and two-dimensional, differential, reflective fiber displacement sensors," Appl. Opt. 24, 2369-2372 (1985)

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  1. E. Snitzer, “Minitutorial: Fiber-Optic Sensors,” in Technical Digest, Conference on Optical Fiber Communication (Optical Society of America, Washington, D.C., 1984), paper TUD1.
  2. M. Shoham, Y. Fainman, E. Lenz, “An Optical Sensor for Real-Time Positioning, Tracking, and Teaching of Industrial Robots,” IEEE Trans. Ind. Electron. Control Instrum. IECI-31, 159 (1984).
  3. M. Johnson, N-M. Jokerst, “Self-Detecting Light Emitting Diode Optical Sensor,” J. Appl. Phys. 56, 869 (1984). [CrossRef]
  4. M. Johnson, “Differential, Reflective Fiber Displacement Sensor with Misalignment Compensation,” in Technical Digest, Third International Conference on Optical Fiber Sensors (Optical Society of America, Washington, D.C., 1985), paper THGG1.

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