Accession Number : ADA322274

Title :   Instrumentation for Accurate Measurement and Control of Optical Phase for Time and Coherence Domain Communications and Space-Time Interferometry.

Descriptive Note : Final rept. 1 Sep 95-31 Aug 96,

Corporate Author : ILLINOIS UNIV AT URBANA DEPT OF ELECTRICAL ENGINEERING

Personal Author(s) : Brady, David J.

PDF Url : ADA322274

Report Date : 06 FEB 1997

Pagination or Media Count : 51

Abstract : Under this program, we constructed an advanced optical phase detection, control and analysis system for space time interferometry and optical communications. The system uses scanning interferometry to extract the phase and magnitude of serial and space time fields. Key components include precision mechanical stages and controllers, high quality optical elements, serial and parallel receiver arrays, broadband sources, and advanced electronic control, data acquisition and analysis subsystems. We used this system to extend our previous work on space time image capture and to systematically explore advanced phase characterization techniques. This report describes our results in using this system to characterize the SNR and information capacity of phase sensitive interferometric imaging and shows experimental evidence of super resolved scanning using phase sensitive detection.

Descriptors :   *OPTICAL COMMUNICATIONS, *OPTICAL INTERFEROMETERS, ARRAYS, SENSITIVITY, RECEIVERS, BROADBAND, DATA ACQUISITION, NOISE REDUCTION, OPTICAL EQUIPMENT COMPONENTS, OPTICAL DETECTORS, OPTICAL SCANNING, CROSS CORRELATION, PHASE DETECTORS.

Subject Categories : Optical Detection and Detectors
      Non-radio Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE