Accession Number : AD0489971

Title :   BROADBAND OPTICAL TRANSCEIVER STUDY.

Descriptive Note : Final rept. 10 May 65-10 Jun 66,

Corporate Author : HUGHES AIRCRAFT CO FULLERTON CA

Personal Author(s) : Cooke, Claude R. ; Lazzara, Samuel P. ; Lotspeich, James F. ; Straus, Thomas M.

Report Date : AUG 1966

Pagination or Media Count : 152

Abstract : The basic objective was to study optical transceiver techniques which minimize deleterious effects of a random atmosphere on the temporal and spacial coherence associated with a transmitted laser signal. Consideration was given to a spacific communication link between a ground terminal and a stable, ground-controlled high altitude platform terminal, possibly a balloon. The communications distance was considered to be about 20 miles (slant range) corresponding to an altitude of 100,000 feet. The considered transmitting and receiving techniques were capable of a minimum channel capacity equivalent to a modulation bandwidth of 100 megacycles/second with a theoretical upper limit of a t least 1 gigacycle/second. Also investigated were the minimum required static and dynamic tracking accuracies of the transceiver compatible with state of the art techniques.

Descriptors :   *TRANSMITTER RECEIVERS), (*OPTICAL COMMUNICATIONS, LASERS, SURFACE TO AIR, RANGE(DISTANCE), MODULATION, OPTICAL EQUIPMENT, BROADBAND, ATMOSPHERICS, ELECTROOPTICS, VERY HIGH FREQUENCY, BACKGROUND, MODULATORS, LIGHT TRANSMISSION.

Subject Categories : Non-radio Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE