Accession Number:

AD0296362

Title:

HETERODYNE DETECTION IN OPTICAL COMMUNICATION TECHNIQUES

Descriptive Note:

Corporate Author:

CONTROL DATA CORP MELVILLE NY TRG DIV

Personal Author(s):

Report Date:

1962-11-30

Pagination or Media Count:

128.0

Abstract:

Identifiers Heterodyne detectors, Homodyne demodulation, Homodyne detectors. The properties of optical heterodyne detection are analyzed and measured using a LASER and a Twyman-Green interferometer. It is shown that heterodyne amplification preserves the signal-tonoise ratio in the detected difference frequency in the presence of incoherent noise. The use of heterodyne detection in optical communication, demultiplexing of channels, demodulation of FM and AM, Doppler and displacement measurements, and stabilization of LASERs is discussed. The elements of an optical communication link are discussed LASERs, modulators, transmission path, and detectors.

Subject Categories:

  • Lasers and Masers

Distribution Statement:

APPROVED FOR PUBLIC RELEASE