A two-channel optical downconverter for phase detection

Autor:	D.G. Enders, L.T. Nichols, Keith J. Williams, Ronald D. Esman, P.D. Biernacki
Rok vydání:	1998
Předmět:	Physics Radiation Preamplifier business.industry Condensed Matter Physics Noise figure Phase detector Optical downconverter Optics Demodulation Heterodyne detection Radio frequency Electrical and Electronic Engineering business Microwave
Popis:	Experimental results for a two-channel optical downconverter link operating from 2 to 18 GHz are presented. Using low-noise preamplifiers results in a noise figure (NF) of 8.5-14 dB over the frequency range of 2-18 GHz. For the first time, relative phase measurements between optically downconverted signals have been performed. An in-phase/quadrature phase-measurement technique indicates a phase precision of /spl plusmn/2/spl deg/ with as little as -60 dBm radio frequency (RF) received power. Comparing the optical microwave downconverter to an electrical microwave downconverter in terms of phase detection reveals similar performance between the two systems.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1171a336138ca6200fa8c488d74b30cc https://zenodo.org/record/1261133 Zobrazit plný text záznamu