User Tools

Site Tools


laser_transceiver

Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revision Previous revision
Next revision
Previous revision
laser_transceiver [2014/11/11 13:51]
cwh0009 [Materials List]
laser_transceiver [2014/11/11 15:34]
cwh0009 [Experiments/Demonstrations]
Line 1: Line 1:
 ====== Overview ====== ====== Overview ======
-The laser transceiver is a free space optical communication device that encodes audio on a laser beam using pulse width modulation (PWM). A single transmitter and receiver unit can be built for about $15-$20 in parts. We used to use this for a demonstration in ELEC 3030 (RF Systems Lab), but aligning the lasers took quite a bit of time to setup.+{{:​transmitter_1.jpg?​direct&​200 |}}The laser transceiver is a free space optical communication device that encodes audio on a laser beam using pulse width modulation (PWM). A single transmitter and receiver unit can be built for about $15-$20 in parts. We used to use this for a demonstration in ELEC 3030 (RF Systems Lab), but aligning the lasers took quite a bit of time to setup.
  
 ====== Design ======= ====== Design =======
Line 43: Line 43:
  
 ====== Photos ====== ====== Photos ======
 +===== Transmitter =====
 +{{:​transmitter_2.jpg?​direct&​400|}} {{:​transmitter_4.jpg?​direct&​400|}}
  
 +===== Receiver =====
 +{{:​transmitter_5.jpg?​direct&​400|}} {{:​transmitter_3.jpg?​direct&​400|}}
 ====== Experiments/​Demonstrations ====== ====== Experiments/​Demonstrations ======
 +  * Place a fan in between the transmitter and receiver, breaking the laser. The fan will generate a tone as it spins. 
 +  * Use the receiver to listen to light and see if anything else generates sound. Fluorescent lights should. 
 +  * Shake power or dust through the laser, or transmit through a stream of water. It should interrupt the audio.
laser_transceiver.txt · Last modified: 2014/11/11 15:34 by cwh0009