Patent Number: 6,801,147

Title: Optical system and method for performing analog to digital conversion

Abstract: An opto-electronic A/D converter includes a tunable laser for wavelength modulating a narrowband coherent electromagnetic beam by the amplitude of the analog signal. A grating transforms the wavelength modulated beam into a corresponding angularly modulated beam. A set of kinoforms diffract the angularly modulated beam into a bundle of diffracted beams. Detectors determine the digital signal by repeatedly sampling the spatial power distribution of the diffracted beams.

Inventors: Thylen; Lars (Huddinge, SE), H.ang.rd; Sverker (Goteborg, SE), Westergren; Urban (Stockholm, SE), Mokhtari; Mehran (Thousand Oaks, CA)

Assignee: Telefonaktiebolaget LM Ericsson (publ)

International Classification: G02F 7/00 (20060101); H03M 1/32 (20060101); H03M 1/22 (20060101); H03M 001/00 ()

Expiration Date: 10/05/2021