Title :
High-resolution technique for guided-wave analogue-digital convertors
Author :
Pace, P.E. ; Ramamoorthy, P.A.
Author_Institution :
Naval Postgraduate Sch., Monterey, CA, USA
Abstract :
A technique is described for extending the resolution of multi-interferometer, guided-wave A/D convertors. Impressing a symmetrical number system (SNS) on the architecture, the optical output waveform for each interferometer is symmetrically folded at a proper modulus. A small comparator ladder mid-level quantises each interferometer output to encode the analogue signal in an SNS format providing resolution greater than 1 bit/interferometer.
Keywords :
analogue-digital conversion; electro-optical devices; integrated optics; light interferometers; optical information processing; optical waveguides; A/D convertors; ADC; Mach-Zehnder interferometer; SNS format; comparator ladder; electro-optical architecture; guided-wave analogue-digital convertors; high-resolution technique; multi-interferometer; optical output waveform; symmetrical number system;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19921395
