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 . . . Hobby Circuit designed by David Johnson P.E.-June, 2000 Experimental fiber optic receiver - Schematic Only __
Fiber Optic Communication Systems Benefit from Tiny Low Noise Avalanche Photodiode Bias Supply - DN273 Design Notes___ Linear Technology/Analog Devices
Fiber vs Copper: Sometimes Its Not an Easy Choice - 11/21/96 EDN-Design Feature Building Choosing between fiber-optic and copper interconnect systems is sometimes difficult, entailing considerations of distance, cost, required bandwidth, and specialized expertise. __ Circuit Design by Design Feature by Bill Travis, Senior Technical EDFtor
High-speed 75MHz light receiver - This circuit uses one tiny C-MOS inverter IC to form a modulated light receiver with a very fast response. It is designed around a PIN photo diode that is packaged for use with plastic optical fibers. It can be used as an optical fiber receiver. By using the open end of the optical fiber it can "sniff" out any modulated light signals. . . Circuit by Dave Johnson P.E.-June, 2000
Light Receiver Works from 1Khz to Over 70Mhz - This circuit uses one tiny C-MOS inverter IC to form a modulated light receiver with a very fast response. It is designed around a PIN photo diode that is packaged for use with plastic optical fibers. It can be used as an optical fiber receiver. By using the open end of the optical fiber it can "sniff" out any modulated light signals. . . Circuit by David Johnson P.E.-June, 2000
Optical Fiber Pressure & Motion Test - The circuit uses an off-the-shelf bright red LED light source, designed for plastic optical fibers. It also uses a matching phototransistor light detector. The devices are designed for plastic fiber. I would suggest you keep the total fiber length less than 50 feet. Bending or stepping on the fiber will produce a detectable output signal. . . . Dave Johnson, Lubbock TX-DC Magazine - Issue 15 Jan 2011
Optical Fiber Receiver-5Mhz Broad Band - 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 . . . Hobby Circuit designed by David Johnson P.E.-June 04, 2000
Pressure_&_Motion_Test_for_Optical_Fibers - The circuit uses an off-the-shelf bright red LED light source, designed for plastic optical fibers. It also uses a matching phototransistor light detector. The devices are designed for plastic fiber. I would suggest you keep the total fiber length less than 50 feet. Bending or stepping on the fiber will produce a detectable output signal. . . . Dave Johnson, Lubbock TX-DC Magazine - Issue 15 Jan 2011
Remote Switch Uses No-Power Fiber-Optic Link - 10/10/96 EDN-Design Ideas The heavy-duty switching device in Figure 1 counts the number of products manufactured and rolled out of a production line per hour. The switch is useful for counting rolling heavy objects or materials weighing one to several thousand kilograms. It generates one pulse per__ Circuit Design by Shyam Tiwari, IGKAR, Kalpakkam, India
Sensor Derives Power From Laser Over Fiber - 02/15/96 EDN-Design Ideas The photovoltaic power-supply circuit in Figure 1 delivers 3.34V (±1.67V) at 5 to 20 mA to a low-power data-acquisition circuit. The total conversion efficiency is 40%; you can thus use a low-cost laser as the power source. The LM385Z shunt-regulates the photovoltaic converter at 1.67V output. This voltage is close to the optimum power-out value for the converter, which specs a 2V open-circuit output. The MAX665 voltage-inverter circuit provIdeas about 95% efficiency vs the 83% you'd obtain from a boost switcher, whose high start-up currents could cause the circuit to hang up. Moreover, the inverter doubler does not produce current spikes, and its ramp-shaped ripple is easy to filter. Low power-supply noise is important in powering a 12-bit ADC at 3.3V (1 LSB=0.8 mV). Note that pin 5 of the instrumentation amplifier connects to the 1/2VCC point rather than to the negative rail.__ Circuit Design by Noor Khalsa, EG&G Los Alamos, NM
Thermoelectric Cooler Temperature Controller for Fiber Optic Lasers - AN89 Linear Technology This App 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___ Linear Technology/Analog Devices |