Optical communications – Transmitter – Including compensation
Reexamination Certificate
2008-02-05
2011-12-06
Tran, Dzung (Department: 2613)
Optical communications
Transmitter
Including compensation
C398S147000, C398S194000
Reexamination Certificate
active
08073340
ABSTRACT:
A distortion compensation circuit compensates for distortion generated by one or more non-linear elements such as a laser device and may include a primary signal path for carrying an input signal and one or more secondary signal paths for generating distortion. The distortion compensation circuit may also include one or more controllable phase inverters on at least one of the paths. For example, the secondary signal path may include a distortion generator to produce distortion products from the input signal and a signal controlled phase inverter that inverts the phase of the distortion products. The distortion generator and phase inverter may be combined as an invertible distortion generator. The phase inversion may be controlled in response to a phase inversion control signal generated based on one or more parameters such as temperature. The secondary signal path may also include separate distortion sub-paths to produce frequency independent distortion products and frequency dependent distortion products.
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Ishaug Brian
Zheng Jun
Applied Optoelectronics, Inc.
Grossman Tucker Perreault & Pfleger PLLC
Kinsella Norman S.
Tran Dzung
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