Optical digital pulse-position modulation: Experimental results for heterodyne detection using suboptimal filtering

A. J. Massarella, M. J.N. Sibley

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Abstract

Original practical and theoretical results are presented for heterodyne detection of optical digital pulse-position modulation (λ=1.523µm) employing suboptimal filtering. The measured sensitivity was - 62.7dBm when operating with a 20 ns slot width and 16 data-pulse positions. This represents an improvement of 16-8 dB over an equivalent suboptimal direct detection digital pulse-position modulation system. With -18dBm of local oscillator power, the sensitivity was within 8.6dB of the shot-noise limit.

Original languageEnglish
Pages (from-to)574-576
Number of pages3
JournalElectronics Letters
Volume28
Issue number6
DOIs
Publication statusPublished - 12 Mar 1992

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