optical communications 1
Loading...
Uploaded by Russoft on Apr 5, 2008
using and LED and a photoresistor, someone can transmit music for a short distance!
Uploader Comments (Russoft)
All Comments (17)
-
dude i feel the EXACT same i am sooo clueless (sorta) but i want to know more! :) Nice Work!
-
Fellow EE student saying hi from McMaster univ.!
Gotta try that one, haven't messed around with photo resistors yet.
-
I know nothing about this sort of thing, but it was still fun to learn about!
-
LOL Im so clueless, I wish I knew about this, but it sounds cool !
-
I wouldn't recommend trying to directly drive a laser-diode from the signal. They are not forgiving and die easily.
My custom-built "Roadie-Special" has analogue inputs for modulating the output from a 0-5v scaled signal.
Now, imagine biasing the zero point of your signal so that the signal can swing below "zero" and above "zero" in your available voltage range of 0-5v. Decode in a similar fashion at the other end and you have probably made a vast improvement in your transmission.
-
cool. But explain something to me: Won't laser diodes burn out if you send a signal through them. I WAS going to try that, but heard that a variation in current will kill the laser.
I haven't watched many videos recently, looks like I'll be visiting yours though.
-
Ooops... You said you were using a photoresistor not a photodiode/phototransistor...
If you try reverse-biasing a photodiode, you should get a slightly better response.
(That's what's going on in my Didge Not Included video about half way through - I show the experimental setup and the scope-shots to compare photodiodes in normal and reverse-biased configurations).
-
Nice one Russ. That's about the sort of quality I'd expect from a sound-source driving an LED and being picked up by a photodiode or phototransistor.
Your audio is being rectified and clipped, remember... Not exactly Hi-Fi, but a reasonable demonstration. Imagine how far away, you'd still be able to decode the audio if you were using your sound signal to modulate one of my lasers...
-
Yes but you like..invent stuff.
-
cool, I'll have to look that up!
6:54
Frontiers of Optical Communication Part Iby PhilInSuffolk5,359 views- 5:59
Fibre opticsby fizzicsorg6,461 views
- 5:23
Business Services over Fiber Access and SDH - RADby radwebmaster1,098 views
- 3:14
100G Optical Networking Systemsby CienaCorp2,627 views
- 2:46
G.8032 Introduction Videoby OvertureNetworksTV1,990 views
- 0:53
optical..laser communication4by shelllrain1,611 views
- 7:16
Ethernet-Enabled DWDMby telecombooksblog6,972 views
- 9:24
OFS Manufacturing High-Performance Optical Fiberby Stien19889,716 views
- 4:36
Cisco - Optical Training Videoby sfedward20,894 views
- 4:41
Pete Thompson's NEW Video Resume-Telecom SONET DS3 Fujitsu Opticalby TelecomPete1,057 views
- 0:37
First color sensor prototypeby trigeekz811 views
- 56:30
Next Generation All-IP Telecom Networks: Quality of Service Challenges and Is...by GoogleTechTalks111,091 views
- 3:38
What is OTN?by CienaCorp3,261 views
- 2:11
Network Convergence with OTNby ConvergeDigest3,011 views
- 0:25
DWDM Fellowshipby danielvix1,207 views
- 3:30
LTE pakistan optical fiber manufacturer pakistanby afzaljawed3,083 views
- 8:46
Nortel 100G optical transmission technology(1/2)by rbbtodaycom1,263 views
- 2:40
The Big Idea in Data Center Switchingby ConvergeDigest805 views
- 2:17
Wireless Freespace Optical Communicationby DanFlying832 views
- 0:20
Photoresistor with 3 outputby ssteven35,201 views
HOW COOL IS THAT?!?!?!
And I'm smarter than you HOW?
mandamk 3 years ago
well, obviously I'm gonna know a lot more about electrical engineering than you.
Russoft 3 years ago