Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Reexamination Certificate
2006-03-30
2008-08-05
Lee, John R (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
C359S334000, C359S341300
Reexamination Certificate
active
07408146
ABSTRACT:
A signal light transmitting apparatus from which signal light is led into a transmission optical fiber, the transmission optical fiber transmitting the led signal light, includes: a signal light power changer which changes power of signal light led thereto, the changed signal light being led into the transmission optical fiber therefrom; a scattering pump light source which emits scattering pump light producing scattered light in the transmission optical fiber; a scattered light power measure which measures the power of the produced scattered light; and a controller which controls the signal light power changer based on the measured power of the scattered light.
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Foley & Lardner LLP
Lee John R
NEC Corporation
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