Open AccessExperimental observations of channel reciprocity in single-mode free-space optical links
Author(s) -
Ronald R. Parenti,
Jeffrey M. Roth,
Jeffrey H. Shapiro,
Frederick G. Walther,
Joseph A. Greco
Publication year - 2012
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.20.021635
Subject(s) - reciprocity (cultural anthropology) , optics , free space optical communication , channel (broadcasting) , transmission (telecommunications) , physics , free space , single mode optical fiber , mode (computer interface) , optical link , telecommunications , computer science , optical communication , optical fiber , psychology , social psychology , operating system
This article describes observations made during a recent series of single-mode lasercom experiments in which high-rate data transmission was demonstrated between a small aircraft and a ground station separated by distances up to 80 km. A significant result of the subsequent data analysis was the discovery of near-unity correlations between the signal fluctuations observed by power monitors at the two ends of the link. This evidence of reciprocity is presented, along with the description of a preliminary concept for utilizing this channel state information to improve link performance.