Apparatus and method for determining extinction ratio of digital laser transmitters
An apparatus and method are provided based directly on measurement of power to enable an accurate and repeatable determination of extinction ratio. One implementation includes an optical-to-electrical (O/E) converter responsive to a modulated optical signal, a multimeter connected to the O/E convert...
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Main Author | |
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Format | Patent |
Language | English |
Published |
22.07.1998
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Edition | 6 |
Subjects | |
Online Access | Get full text |
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Summary: | An apparatus and method are provided based directly on measurement of power to enable an accurate and repeatable determination of extinction ratio. One implementation includes an optical-to-electrical (O/E) converter responsive to a modulated optical signal, a multimeter connected to the O/E converter for measuring a voltage corresponding to average optical power, a power meter connected to the O/E converter for measuring a voltage corresponding to the optical power in the modulation signal, and a microprocessor for determining the extinction ratio from the measured signals corresponding to average optical power and optical power in the modulation signal. |
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Bibliography: | Application Number: GB19950010291 |