Patent
1977-10-03
1979-05-01
Corbin, John K.
350 9634, G02B 514
Patent
active
041520459
ABSTRACT:
Couplers for coupling achromatic light having wavelengths of blue through red to and from an optical film waveguide along collinear paths parallel with the waveguide. Each coupler is constituted by a prism made of a material which, over the range of wavelengths of interest, has a change in refractive index which differs from the change in refractive index of the waveguide film by less than 0.5 percent of the refractive index of the prism material.
REFERENCES:
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patent: 3610727 (1971-10-01), Ulrich
patent: 3614198 (1971-10-01), Martin et al.
patent: 3694055 (1972-09-01), Bergman et al.
patent: 3719411 (1973-03-01), Midwinter
patent: 3905676 (1975-09-01), Ulrich
patent: 3944812 (1976-03-01), Hattori et al.
patent: 4059338 (1977-11-01), Hartelius
Tien et al, "Modes of Propagating Light Waves in Thin Deposited Semiconductor Films", Appl. Phys. Ltrs., vol. 14, No. 9, May 1969, pp. 291-294.
Midwinter et al., "Experimental Studies of Evanescent Wave Coupling . . . ", Appl. Phys. Ltrs., vol. 16, No. 5, Mar. 1970, pp. 198-200.
Ulrich et al, "Offset Prism for Optical Waveguide Coupling", Applied Optics, vol. 13, No. 8, Aug. 1974, pp. 1850-1852.
Christoffersen H.
Cohen Samuel
Corbin John K.
Lee John D.
Olson Carl V.
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