Apparatus and method having at least one waveguide coupler to cr

Details Apparatus and method having at least one waveguide coupler to cr Apparatus and method having at least one waveguide coupler to cr

1990-12-21

1992-11-10

Turner, Samuel A.

Optics: measuring and testing

By particle light scattering

With photocell detection

25022727, 356358, 385 14, G01B 902

Patent

active

051628694

ABSTRACT:
In an arrangement with at least one waveguide coupler, two photo beam bundles are supplied to both of the inputs of the waveguide coupler by two input grids and are brought to interference in the coupling area. A damping element is provided in the coupling area of the waveguide coupler for obtaining at the two outputs two signals having a mutual phase shift of other than 180.degree. by two detectors.

REFERENCES:
patent: 4759627 (1988-07-01), Thylen et al.
patent: 4938596 (1990-07-01), Parriaux et al.
patent: 4957362 (1990-09-01), Peterson

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