PRACTICAL ASPECTS OF INJECTION LASER COMMUNICATION SYSTEMS

THIS PAPER DESCRIBES SEVERAL PERTINENT DESIGN FACTORS FOR LASER LINE-OF-SIGHT COMMUNICATION SYSTEMS UTILIZING GAAS LASER DIODES OPERATING AT ROOM TEMPERATURE IN A PULSED MODE. ANALYSIS, EXPERIMENTATION, AND CONSTRUCTION OF SEVERAL SUCH SYSTEMS HAVE REVEALED THAT (1) RELIABLE VOICE COMMUNICATION CAN BE ACHIEVED EFFECTIVELY OVER RANGES OF AT LEAST FIVE MILES WITH A ONE-WATT PULSED INJECTION LASER, (2) IF BACKGROUND RADIATION IS HIGH (E.G., DAYLIGHT OPERATION), THERE IS A RECEIVER FIELD OF VIEW BEYOND WHICH A PHOTODIODE RECEIVER MINIMIZES REQUIRED TRANSMITTER POWER, AND (3) FOR A PHOTODIODE RECEIVER THAT IS OPTIMIZED FOR DETECTING THE PULSED RADIATION FROM A ROOM-TEMPERATURE-OPERATED GAAS INJECTION LASER, USE OF AN OPTICAL FILTER TO SUPPRESS BACKGROUND RADIATION WILL NOT (IN MOST CASES OF PRACTICAL INTEREST) IMPROVE OVERALL PERFORMANCE. /AUTHOR/

• Supplemental Notes:
  • Vol 28, pp 609-619
• Corporate Authors:

  Radio Corporation of America

  ,    
• Authors:
  • Hannan, W J
  • Bordogna, J
  • Karlsons, D
• Publication Date: 1967-12

Media Info

• Serial:
  • RCA Review
  • Publisher: Radio Corporation of America

Subject/Index Terms

• TRT Terms: Communication systems; Diodes; Filters; Lasers; Semiconductor devices; Semiconductors; Speech; Voice communication
• Uncontrolled Terms: Injection
• Old TRIS Terms: Optical filters
• Subject Areas: Highways; Operations and Traffic Management;

Filing Info

• Accession Number: 00225213
• Record Type: Publication
• Source Agency: Traffic Systems Reviews & Abstracts
• Files: TRIS
• Created Date: Jul 1 2003 12:00AM