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1 Background Extinction ratio is an important parameter included in the specifications of most fiber-optic transceivers. The purpose of this application note is to show how the optical extinction ratio is defined
Read MoreConcept of extinction ratio of optical transmitter signal
Home / Concept of extinction ratio of optical transmitter signal
The extinction ratio is the ratio of the average optical power for transmitting signals 1 to the average optical power for transmitting signals 0 under the worst transmission conditions. One parameter, extinction ratio, is used to describe optimal biasing conditions and how efficiently available laser transmitter power is converted to modulation power. Although specifications are defined by industry standards and test method-ologies loosely described, historically it has been. More significantly, the most crucial parameter for characterizing an optical transmitter's performance in the SDI video setting is its extinction ratio (ER).