LASER COMMUNICATIONS FOR THE ALOHA SYSTEM.

Abstract

In the laser communication system designed for data transmission and reception, the information carrying binary pulse train is used to activate (forward bias) and deactivate (reverse bias) a light emitting diode. When activated, the light emitting diode emits near-infrared light, and when deactivated, nothing is emitted. The receiver then detects the presence or absence of the near infrared radiation, using a light sensing diode. In the presence of light, the light sensing diode produces a large photocurrent, and in the absence of light, it produces a small current. Any data terminal that can produce and accept binary information can be used directly in a laser communications system without any interface problems between the terminal and the transmitter or receiver. (Author)

Document Details

Document Type
Technical Report
Publication Date
May 01, 1969
Accession Number
AD0693623

Entities

People

  • Earl Kanehira

Organizations

  • University of HawaiĘ»i System

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Communication Systems
  • Data Transmission
  • Diodes
  • Electromagnetic Radiation
  • Infrared Radiation
  • Ionizing Radiation
  • Laser Communications
  • Light Emitting Diodes
  • Near Infrared Radiation
  • Radiation
  • Terminals

Readers

  • Radio communications and signal processing.
  • Semiconductor Device Technology
  • Spectroscopy.

Technology Areas

  • Directed Energy