Optical waveguides – With optical coupler – Input/output coupler
Patent
1992-05-20
1993-12-14
Bovernick, Rodney B.
Optical waveguides
With optical coupler
Input/output coupler
385 14, G02B 634
Patent
active
052710785
ABSTRACT:
A measurement device having a correction grating associated with a gauge and deflects two diffracted partial beams overlappingly, at a very small angle (.alpha.), onto a single coupling grating. From there, two waveguides located closely beside one another are used to introduce the beams into a coupler and the beams are superimposed and evaluated in a known manner. Thus, a position measuring device can be drastically reduced in its structural size with the aid of an integrated optical component.
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Ura, S. et al., "Integrated-Optic-Interferometer Position Sensor", Journal of Lightwave Technology, vol. 7, No. 2, pp. 270-273 Feb. 89.
Burns et al., "3X2 Channel Waveguide Gyroscope Couplers: Theory," IEEE Journal of Quantum Electronics, vol. QE-18, No. 10, pp. 1790-1796 (Oct. 1982).
English Abstract of Japanese Application No. 62-166333, published on Jul. 2, 1987. Patent Abstracts of Japan, vol. 13, No. 180 (Apr. 1989).
Allgauer Michael
Franz Andreas
Bovernick Rodney B.
Dr. Johannes Heidenhain GmbH
Ngo John
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