High-resolution distance meter using optical modulators at 3.5 GHz

Ichiro Fujima; Katuo Seta; Hirokazu Matsumoto; Hisashi Yoshida

doi:10.1117/1.601573

1 December 1997 High-resolution distance meter using optical modulators at 3.5 GHz

Ichiro Fujima, Katuo Seta, Hirokazu Matsumoto, Hisashi Yoshida

Optical Engineering, Vol. 36, Issue 12, (December 1997). https://doi.org/10.1117/1.601573

A high-resolution distance meter is fabricated using optical waveguide modulators. The modulation frequencies of the optical modulators are around 3.5 GHz, while the modulation frequencies of the optical intensity are around 7 GHz because the modulation bias voltages are set at the peaks of the electrooptic characteristics. The distance meter was evaluated in the National Research Laboratory of Metrology (NRLM) tunnel, which is a semiunderground tunnel. The measurement resolution has a standard deviation of 12 ?m for a distance range of 0.5 to 5 m after correction of the cyclic error.

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Ichiro Fujima, Katuo Seta, Hirokazu Matsumoto, and Hisashi Yoshida "High-resolution distance meter using optical modulators at 3.5 GHz," Optical Engineering 36(12), (1 December 1997). https://doi.org/10.1117/1.601573

Published: 1 December 1997

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