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US 6,211,950 B1Granted
Optical pulse reflectometer
AssigneeDeutsche Telekom AG
InventorHerbert Walter
Life of this patent
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Abstract
An optical pulse reflectometer includes switch for selectively connecting a light source to an associated test object and for selectively connecting the test object to an associated photodetector (70). The power utilization and thus the sensitivity is improved over conventional optical pulse reflectometers.
Claims7
An optical pulse reflectometer comprising:
- at least one light source operating in a constant light mode;
- at least one test object;
- at least one photodetector;
- an indication device connected downstream of an output of the at least one photodetector;
- at least one optical switch for selectively connecting the light source to the at least one test object and the at least one test object to the at least one photodetector;
- and
- a control device for driving the at least one optical switch so as to produce light pulses having a predefined frequency and duration.
4 more elements
Dependencies are inferred from the claim text.