Show simple item record

dc.contributor.advisorPace, Phillip E.
dc.contributor.authorFisher, Adam S.
dc.date.accessioned2012-03-14T17:34:19Z
dc.date.available2012-03-14T17:34:19Z
dc.date.issued2005-06
dc.identifier.urihttp://hdl.handle.net/10945/2154
dc.description.abstractA photonic analog-to-digital converter (ADC) based on a robust symmetrical number system (RSNS) was constructed and tested. The analog signal to be converted is used to amplitude modulate an optical pulse from a laser using three Mach-Zehnder interferometers (MZI). The Mach-Zehnder interferometers fold the input analog signal for a three-channel RSNS encoding. The folding waveforms are then detected and amplitude-analyzed by three separate comparator banks, the outputs of which are used to determine a digital representation of the analog signal. This design uses the RSNS preprocessing to encode the signal with the fewest number of comparators for any selected bit resolution. In addition to the efficiency of its use of comparators, the RSNS encoding has inherent Gray-code properties making it particularly attractive for eliminating any possible encoding errors. The RSNS encoding is combined with an optical infrastructure that offers high bandwidth and low insertion loss characteristics. A full implementation was constructed and tested. The lack of a high-speed data acquisition device limited the results to examining the preprocessing and digital processing separately. With the system integration of a data acquisition device, a wideband direct digital antenna architecture can be demonstrated.en_US
dc.description.urihttp://archive.org/details/photonicnalogtod109452154
dc.format.extentxvi, 57 p. : ill. (chiefly col.) ;en_US
dc.publisherMonterey California. Naval Postgraduate Schoolen_US
dc.rightsThis publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. As such, it is in the public domain, and under the provisions of Title 17, United States Code, Section 105, may not be copyrighted.en_US
dc.subject.lcshAnalog-to-digital convertersen_US
dc.subject.lcshMode-locked lasersen_US
dc.subject.lcshPhotonicsen_US
dc.titlePhotonic analog-to-digital coonversion using a robust symmetrical number systemen_US
dc.typeThesisen_US
dc.contributor.secondreaderPowers, John P.
dc.contributor.corporateNaval Postgraduate School (U.S.).
dc.contributor.departmentDepartment of Electrical and Computer Engineering
dc.identifier.oclc61753099
etd.thesisdegree.nameM.S.en_US
etd.thesisdegree.levelMastersen_US
etd.thesisdegree.disciplineElectrical Engineeringen_US
etd.thesisdegree.grantorNaval Postgraduate Schoolen_US
etd.verifiednoen_US


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record