SPECIFICATIONS OF FIBER-OPTIC LED
Material
Ga Al AS
Wavelength
660nm
Spectral Line Width
45nm
Forward Voltage Vf
1.7V to 10V
Reverse Voltage (Vr)
5 Volts
Capacitance
100 pf (approx.)
Forward Current (9max)
30 mA (avg.)
Optical Power
30-40mw-10mA
Turn-on-turn-off time
<800 ns
Termination
SMA (905)
Electrical Leads
Red sleeve is Anode, No sleeve is Cathode
FIBER OPTICS PHOTOTRANSISTOR USED IN THIS TRAINER
• The fiber optics phototransistors used in this trainer has a responsively of 50 mA/mw of incident light at 660 nm, when coupled to a 1 mm PMMA fiber.
• The device is terminated with an optical SMA connector nickel plated). The phototransistor is suitable for speeds upto 100 KHz.
SPECIFICATIONS OF FIBER OPTIC PHOTOTRANSISTOR
Peak Responsively
850 nm
Spectral Range
400 to 1100 nm
Dark Current
100 mA (max)
Spectral Response
50mA/mw-660 nm
CE Breakdown Voltage
30V (min)
EC Breakdown Voltage
5V (min)
Vce (sat)
0.2 V (typical)
Rise/Fall Time
5 ms (typical)
Connector
SMA (905)
Electrical Leads
Black sleeve is Emitter,No sleeve is collector
List of experiments
• To demonstrate the numerical aperture of the PMMA Fiber cable.
• To study various types of losses that occurs in optical fibers and measures the loss in dB coupling two optical Fibre patch cords.
• To compute the co efficient attenuation per meter.
• To find the relationship between the forward current of fibre optic LED and optical power output and determine the linearity of the device.
• To determine the relationship between the optical input power Pin and the resultant photo current IP in an optical to electrical converter.
• Evaluation of an AC intensity modulation system.
• To study Transmission/Reception of digital signal using this trainer and plot the graph of transmitter frequency versus VO.
Features of the Trainer
Power supply
Voltage range : AC 100V – 230 V
Frequency range : 50 – 60Hz
Function Generator
Sine / Square output
Housing
It is housed in an elegant metal cabinet(CNC Machine finish)
Dimension
45cm x 45cm x 18cm
Weight
6kgs
This trainer is a glass-epoxy printed circuit board and all the symbols screen-printed on the front panel so that it enables the student to conduct the experiments easily
Accessories:
• 2mm multi coloured moulded patch cords with daisying facility.
• Computer simulated outputs and Step-By-Step detailed instructions are provided with the instruction manual.
• Fiber optic cable, terminated with SMA connectors – 1 meter.
• Mic.
• Speaker.
