Optical digital to analog converter

Details Optical digital to analog converter Optical digital to analog converter

1974-12-31

1976-10-12

Smith, Alfred E.

350 96C, G02B 514

Patent

active

039854230

ABSTRACT:
An optical digital to analog converter having a plurality of input channels, each having the presence or absence of light representing the respective ones or zeros of a digital code, each of the input channels being coupled to a channel consisting of cascaded magneto-optical mode converters, the number of cascaded elements being equal to the corresponding weighting value of the element of the code, and a common receptor to which the outputs of the cascades are coupled.

REFERENCES:
patent: 3830555 (1974-08-01), Warner
Tien et al., "Switching and Modulation of Light in Magneto-optic Waveguides of Garnet Films," Appl. Phys. Lett., vol. 21, No. 8, 1972.
Tseng et al., "Mode Conversion in Magneto-Optic Waveguides Subjected to a Periodic Permalloy Structure," Appl. Phys. Lett., vol. 24, No. 6, 1974.
Lean, "Optical Switch and Modulator in Parallel Waveguides," IBM Tech. Disc. Bulletin, vol. 17, No. 4, Sept. 1974.

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