DiscoverCircuits.com, has 28,000+ electronic
circuits, cross-referenced
into 500+ categories. We have searched the web to help you
find quick design ideas.
We make every effort to link to material posted by the designer.
Please let us if you would like us to link to your design.
Fiber Optic
Circuits, Page 1 Fiber Optic Circuits:
#'s - DE - Z
Last Updated on:
Monday, November 02, 2009 03:40 PM
Circuits Designed by Dave Johnson, P.E. :
BROAD
BAND 2MHz OPTICAL FIBER RECEIVER
If you need more sensitivity than the above circuit this circuit provides about ten
times more gain. It too is designed around an inexpensive plastic optical fiber
detector.
BROAD
BAND 5MHz OPTICAL FIBER RECEIVER
This circuit is a simple broad band light detector that uses a very inexpensive IC
and a PIN photodiode that is packaged for use with plastic optical fibers. It has a
bandwidth from 1KHz to over 5MHz. It is great for experimenting with various
modulated light sources.
BROAD BAND
50MHz OPTICAL FIBER RECEIVER VERSION A
If the above circuit it still too slow, you can try this circuit. What it lacks in
sensitivity it makes up for in speed. The circuit attaches a plastic fiber optic PIN
photodiode assembly to a small box containing a small 3v battery and a standard BNC
plug. When the box is plugged into to the input of an oscilloscope with a 50-ohm
termination resistor, it can detect light pulse frequencies beyond 100MHz.
Links to electronic circuits, electronic schematics, designs for engineers,
hobbyists, students & inventors:
A Thermoelectric Cooler Temperature Controller for Fiber Optic Lasers -
AN89 Linear Technology This application note presents circuitry for
maintaining 0.01°C temperature control of fiber optic lasers over wide ambient
range variations. The circuitry also features high efficiency power delivery,
compact size and low noise. Detailed descriptions of circuitry and results are
given with special emphasis on rmal loop optimization. An appended....
Broad Band 2MHz Optical Fiber Receiver - If you need more sensitivity than the
above circuit this circuit provides about ten times more gain. It too is designed
around an inexpensive plastic optical fiber detector. ….(designed by David A. Johnson)
Broad Band 50mhz Optical Fiber Receiver Version A - If the above circuit it still
too slow, you can try this circuit. What it lacks in sensitivity it makes up for in
speed. The circuit attaches a plastic fiber optic PIN photodiode assembly to a small
box containing a small 3v battery and a standard BNC plug. When the box is plugged
into to the input of an oscilloscope with a 50-ohm termination resistor, it can detect
light pulse frequencies beyond 100MHz. ….(designed by David A. Johnson)
Broad Band 5mhz Optical Fiber Receiver - This circuit is a simple broad band light
detector that uses a very inexpensive IC and a PIN photodiode that is packaged for use
with plastic optical fibers. It has a bandwidth from 1KHz to over 5MHz. It is great
for experimenting with various modulated light sources. ….(designed by David A.
Johnson)
Current Sources for Fiber Optic Lasers - AN90 Linear Technology A large group of
fiber optic lasers are powered by DC current. Laser drive is supplied by a current
source with modulation added to the signal. The current source, although conceptually
simple, constitutes an extraordinarily tricky design problem. There are a number of
practical requirements for a fiber optic current source and failure to consider them
can cause laser and/or optical component destruction. This application note describes
ten laser current source circuits with a range of capabilities. High and low current
types are presented, along with designs....
