Optical Communication in Free Space

From Knox Makers Wiki
Revision as of 20:30, 3 April 2011 by Andronicus (talk | contribs)
Jump to navigation Jump to search

Overview

Forum Link http://www.knoxvillehackerspace.com/phpbb/viewtopic.php?f=6&t=13

Milestones

Range

  • Demonstrate point to point communications across a room with Class IIIa lasers and no optics
  • Demonstrate point to point communications across a field with Class IIIa lasers and optics present
  • Determine distance limitations of point to point communications using Class IIIa lasers
  • Procure Class IIIb lasers and necessary protective gear and attempt longer range communications

Data Transfer

Half Duplex

  • Go/No Go with simple breadboard circuit
  • Simple voice communication with modulator and amplifier circuits
  • High speed network communications

Full Duplex

  • Go/No Go with simple breadboard circuit
  • Simple voice communication with modulator and amplifier circuits
  • High speed network communications

Optics

Transmitter

Lasers

A 5 mW green laser pointer is available from http://www.optotronics.com/green-laser-pointers.php with very good beam properties Beam divergence: <1.2 mrad Beam diameter: <1.5 mm

  • Add equations for divergence and maybe wolfram alpha application for calculations

LEDs

Receiver

Legal & Safety

Code of Federal Regulations Title 21 Section 1040 [1]

OSHA Technical Manual Section III Chapter 6 Laser Hazards [2]

ANSI Z136.1 (2007) - Safe Use of Lasers

ANSI Z136.6 (2005) - Safe Use Of Lasers Outdoors

http://en.wikipedia.org/wiki/Laser_safety

External Links

Ronja Project http://ronja.twibright.com/

http://members.misty.com/don/laserfaq.htm

http://www.repairfaq.org/sam/laserdps.htm

http://captain.haddock.8m.com/laser/laser1.html

http://en.wikipedia.org/wiki/Free-space_optical_communication

Retrieved from "https://wiki.knoxmakers.org/index.php?title=Optical_Communication_in_Free_Space&oldid=8"