Coherent light generators – Particular component circuitry – Controlling current or voltage to laser
Reexamination Certificate
2007-07-10
2009-08-11
Harvey, Minsun (Department: 2828)
Coherent light generators
Particular component circuitry
Controlling current or voltage to laser
C372S038100, C372S038020
Reexamination Certificate
active
07573923
ABSTRACT:
A laser drive circuit may be used to induce high limit clipping corresponding to natural low limit clipping in a laser, such as a laser diode, to reduce even order distortion such as composite second order (CSO) distortion. A drive current input may be provided to the active region of the laser to produce a modulated optical output in response to the drive current input. The laser drive circuit may include a current clamp at the drive current input, which clamps the drive current to provide the high limit clipping. The current clamp may receive an input current including current from a RF signal provided by a RF source together with a bias current provided by a bias current source.
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Applied Optoelectronics, Inc.
Grossman Tucker Perreault & Pfleger PLLC
Harvey Minsun
Kinsella Norman Stephan
Zhang Yuanda
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