HETERODYNE DETECTION IN OPTICAL COMMUNICATION TECHNIQUES
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.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 30, 1962
- Accession Number
- AD0296362
Entities
People
- James Latourrette
- Stephen Jacobs
Organizations
- Control Data Corporation