• Laser Diode Power Modus

• Optical Fiber

• Si PIN Photo Detector

• Fiber Handling and Preparation

• Coupling Light to Fiber

• Refected Light Echoes

• Speed of Light

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In communication fibers the light is guided within a 'glass tube' of only a few micrometers. Reducing fiber transmission losses by using active fibers and finding the integrated optical device are the big aims nowadays.

To find out sources of losses in the fibre which are induced by manufacturing process or mechanical stress Optical Time Domain Reflectometry (OTDR) is used as an efficient method. Basicly this procedure couples a light signal into the fiber and measures the occurrence of reflected light blips.

These blips will be produced at stray centres at defects within the fiber core or at fiber surfaces for example at fiber connectors. This behaviour is exploited within OTDR and can be used to locate errors in fiber links. The goal of this educational kit is understanding and training in this very important technique.

The students will be shown the principle of operation of OTDR with the help of a complete set-up shown in the figure below. The measurement of the back scattered light and the interpretation of the measured data are explained and discussed.

All needed mechanical, optical and electronical components are included. For the measurements a 100 MHz oscilloscope is necessary and can be ordered as an option. Besides the OTDR many other fiber related measurements and handling like mesurement of speed of light, behaviour of diode lasers or data transmission can be carried out.

Match Code
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CA-1420

Oder No.
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4900-9-1420