04712089 is referenced by 12 patents and cites 4 patents.

Methods and apparatus for all-optical analog to digital conversion. An analog optical input signal is directed along a path comprising a series of level sensing means for determining whether its intensity is above or below a threshold value. The optical signals from successive level sensing means are directed in pairs to optical exclusive-or gates to provide a digital optical signal to at least one of a plurality of individual optical output means according to a designated digital coding system whereby the optical digital indication corresponds to the sensed level of intensity of the analog optical input signal. Apparatus comprising channel waveguides and integrated optical devices provide economical systems for high-speed computation and other uses.

Title
All-optical A/D conversion using integrated nonlinear guided wave optical circuitry
Application Number
6/786770
Publication Number
4712089
Application Date
October 11, 1985
Publication Date
December 8, 1987
Inventor
Carl M Verber
Columbus
OH, US
Agent
Philip M Dunson
Assignee
Battelle Memorial Institute
OH, US
IPC
H03M 1/36
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