Differential absorption polarizer, a method of forming same and

Details Differential absorption polarizer, a method of forming same and Differential absorption polarizer, a method of forming same and

1986-09-24

1988-08-16

Lee, John

350 9612, 350 9613, G02B 612

Patent

active

047639725

ABSTRACT:
A differential absorption polarizer is constructed to be used in accordance with integrated optics.
This polarizer includes, on a waveguide layer formed on a substrate, a layer of dielectric material whose surface has hollows and bosses and therefore several inclined zones. The hollows and bosses define minimum (em) and maximum (eM) thicknesses of the layer, which bracket the resonance thickness of the dielectric for the polarization there to be absorbed.
The dielectric material layer is coated with a metal layer.

REFERENCES:
patent: 3918136 (1975-11-01), Ernsthausen
C. Nguyen et al.; "Experimental Studies of Metal-Clad Tapered Optical Waveguides"; Electronic Letters; May 24, 1984; vol. 20, No. 11, p. 439.
Optical Communication, ECOC '84, Tenth European Conference on Optical Communication, Stuttgart, 3-6 Sep. 1984, edited H. Haupt, pp. 44-45, North-Holland, Amsterdam, NL; J. Ctyroky et al., "Thin-Film Polarizer for Optical . . . ".
Optics Letters, vol. 10, No. 6, Jun. 1985, pp. 288-290, Optical Society of America, New York, US; K. Thyagarajan et al., "Experimental Demonstration of TM Mode-Attenuation Resonance in Planar Metal-Clad Optical Waveguides".
Journal of Lightwave Technology, vol. LT-2, No. 4, Aug. 1985, pp. 528-530, IEEE, New York, US; B. Zhang et al., "C2F6 Reactive Ionbeam Etching of LiNbO3 & Nb205 and their Application to Optical Waveguides".
Applied Optics, vol. 23, No. 17, Sep. 1984, pp. 2985-2987, R. F. Carson et al, "Polarization Effects in Silicon-Clad Optical Waveguides."

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