23 February 1989 Fiber Optic Position Sensor With Spectral Reference Channel
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Proceedings Volume 1011, Fiber Optic Sensors III; (1989) https://doi.org/10.1117/12.949301
Event: 1988 International Congress on Optical Science and Engineering, 1988, Hamburg, Germany
The long-term stability of intensity modulated fiber optic sensors under changing environmental conditions is limited by many factors. Introducing the spectral symmetric referencing method it is shown that even linear spectral variations of down-lead damping can be compensated. In combination with a simple modulator consisting of a spectral filter with locally varying density a novel position sensor has been realized. This design reduces the error caused by down-lead sensitivity to 2 %.
© (1989) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
M. Griesinger, M. Griesinger, H. W. Spaude, H. W. Spaude, "Fiber Optic Position Sensor With Spectral Reference Channel", Proc. SPIE 1011, Fiber Optic Sensors III, (23 February 1989); doi: 10.1117/12.949301; https://doi.org/10.1117/12.949301

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