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US 6,888,123 B2Granted
Method and apparatus for monitoring a photo-detector
AssigneeFinisar Corporation
InventorsDarin James Douma, Stephan C. Burdick
Life of this patent
Estimating the term…
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AssigneeFinisar Corporation
InventorsDarin James Douma, Stephan C. Burdick
Estimating the term…
An optical signal detector monitoring circuit can include a current divider current mirror (CDCM) and a current multiplier current mirror (CMCM). A mirror leg of the CDCM generates a current corresponding with a part of the CDCM's primary leg current. The CMCM's primary leg couples to the CDCM's mirror leg. The CMCM generates a mirror leg current corresponding with a multiple of its primary leg current. Another circuit can include a first current mirror having a primary current leg (PCL), coupled between an optical signal detector and one of an electrical source and an electrical sink, that exhibits a resistance corresponding with a part of the resistance of the first current mirror's mirror current leg (MCL). The circuit's second current mirror has a MCL that exhibits a resistance corresnonding with a part of the resistance of the second current mirror's PCL, which couples with the first current mirror's MCL.
A circuit for monitoring an optical signal detector, comprising:
A circuit for monitoring an optical signal detector, comprising:
An optical transceiver with an optical signal generator and an optical signal detector, comprising:
A method for monitoring current in an optical signal detector comprising:
Dependencies are inferred from the claim text.