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IM AQ1210-02EN
Background Information on Measurements
Background Information on Measurements
How to View Optical Pulse Measurement Waveforms (TRACE screen)
The optical pulse applied to an optical fiber cable is reflected at different points of the optical fiber such as its connections, bent
sections, and the open end of the fiber. These sections generate loss. The measured result is displayed as a waveform that has
distance represented in the horizontal direction and loss level represented in the vertical direction. On the waveform, detected losses or
reflections are known as events.
Incident ray
Backscatter
Splice
Connector
Bend
Open end
Optical fiber cable
Near-end
reflection
Splice loss
Approximated line
Reflection caused by a connector
Loss caused by bending
Reflection at the open end (Fresnel reflection)
Dynamic range (SNR = 1)
