Optical Communication in Free Space: Difference between revisions
Jump to navigation
Jump to search
Andronicus (talk | contribs) No edit summary |
Andronicus (talk | contribs) No edit summary |
||
| Line 31: | Line 31: | ||
==Receiver== | ==Receiver== | ||
=Safety | =Legal & Safety= | ||
Code of Federal Regulations Title 21 Section 1040 [http://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfcfr/cfrsearch.cfm?fr=1040.10] | Code of Federal Regulations Title 21 Section 1040 [http://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfcfr/cfrsearch.cfm?fr=1040.10] | ||
| Line 39: | Line 39: | ||
ANSI Z136.6 (2005) - Safe Use Of Lasers Outdoors | ANSI Z136.6 (2005) - Safe Use Of Lasers Outdoors | ||
http://en.wikipedia.org/wiki/Laser_safety | |||
=External Links= | =External Links= | ||
| Line 48: | Line 50: | ||
http://captain.haddock.8m.com/laser/laser1.html | http://captain.haddock.8m.com/laser/laser1.html | ||
http://en.wikipedia.org/wiki/Free-space_optical_communication | |||
Revision as of 20:30, 3 April 2011
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