Accession Number : ADA309494

Title :   Ultrafast Optical A/D Converter Using Cross Phase Modulation.

Descriptive Note : Final technical rept. Aug 92-Aug 95,

Corporate Author : CITY COLL NEW YORK DEPT OF ELECTRICAL ENGINEERING

Personal Author(s) : Ho, P. P. ; Alfano, R. R.

PDF Url : ADA309494

Report Date : MAR 1996

Pagination or Media Count : 55

Abstract : This report discusses the spectral, vectorial, and temporal properties of ultrafast optical pulse propagation in single mode optical fibers, with the objective of demonstrating and improving the spectral encoding of an optical pulse intensity using the cross phase modulation process for an ultrafast optical analog to digital converter. The design and test of an ultrafast analog to digital converter operating at five giga samples per second with sixteen digital levels (four bits) accuracy per sampling channel is described. Operation of the converter was demonstrated and effects limiting performance were isolated. Techniques to improve accuracy, increase sensitivity, and realize a more practical design are described.

Descriptors :   *FIBER OPTICS, *ANALOG TO DIGITAL CONVERTERS, DIGITAL SYSTEMS, HIGH RATE, CODING, LIMITATIONS, LIGHT PULSES, SAMPLING, CHANNELS, PHASE MODULATION, CROSS MODULATION.

Subject Categories : Electrooptical and Optoelectronic Devices
      Fiber Optics and Integrated Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE