Liquid-crystal-based optical timedelay control system for wideband phased arrays

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dc.contributor.authorRiza, Nabeel A.
dc.contributor.funderGeneral Electricen
dc.date.accessioned2020-06-11T09:40:26Z
dc.date.available2020-06-11T09:40:26Z
dc.date.issued1993-02-26
dc.description.abstractWe introduce a novel, time delay-based, transmit-receive mode, remotely located, optical control system for wide instantaneous bandwidth phased arrays. Time delays are achieved using a cascade of free-space and fiber-based optical delay lines using bulk imaging optics for low complexity, two dimensional, free-space optical interconnects. High channel isolation, low insertion loss optical switching between delayed and undelayed paths is based on polarization switching using the low cost nematic liquid crystal arrays and polarizing beam splitters. The system allows for noise reduction via spatial and polarization filtering. A dual- channel time-multiplexed system arrangement is used to implement the fast (e.g., 200 beams/s) radar scan rates using the several millisecond response time nematic liquid crystals.en
dc.description.sponsorshipGeneral Electric (GE-CRD and GE-Aerospace)en
dc.description.statusPeer revieweden
dc.description.versionPublished Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationRiza, N. A. (1993) 'Liquid-crystal-based optical time-delay control system for wideband phased arrays', Proceedings of SPIE, 1790, Analog Photonics, Fibers '92, 1992, Boston, MA, United States, 26 February, doi: 10.1117/12.141715en
dc.identifier.doi10.1117/12.141715en
dc.identifier.endpage183en
dc.identifier.issn0277-786X
dc.identifier.issn1996-756X
dc.identifier.journaltitleProceedings of SPIEen
dc.identifier.startpage171en
dc.identifier.urihttps://hdl.handle.net/10468/10133
dc.identifier.volume1790en
dc.language.isoenen
dc.publisherSociety of Photo-Optical Instrumentation Engineers (SPIE)en
dc.rights© 1993 Society of Photo-Optical Instrumentation Engineers (SPIE). One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.en
dc.subjectPhased array opticsen
dc.subjectChannel projecting opticsen
dc.subjectPolarizationen
dc.subjectSpatial light modulatorsen
dc.subjectControl systemsen
dc.subjectPhased arraysen
dc.subjectIntegrated opticsen
dc.titleLiquid-crystal-based optical timedelay control system for wideband phased arraysen
dc.typeConference itemen
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