Coherent light generators – Particular component circuitry – For driving or controlling laser
Reexamination Certificate
2006-06-27
2006-06-27
Harvey, Minsun Ch (Department: 2828)
Coherent light generators
Particular component circuitry
For driving or controlling laser
C372S038070
Reexamination Certificate
active
07068691
ABSTRACT:
In a directly modulated optical module, the input current to drive the semiconductor laser is controlled so as to make a rate of change in fall time smaller than a rate of change in rise time (inclination) in order to improve the eye opening of an eye pattern and extend the transmission distance. In addition, the input current is overshot at least during the period of transient state following the rising edge.
REFERENCES:
patent: 6597209 (2003-07-01), Iguchi et al.
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patent: 2003-017800 (2003-01-01), None
Trapezoid dictionary entry (found using Dictionary.com), The American Heritage Dictionary of the English Language, Fourth Edition, 2000, Houghton Mifflin Company.
Chujo Norio
Kagaya Osamu
Harvey Minsun Ch
OpNext Japan, Inc.
Roy Tod T. Van
Townsend and Townsend / and Crew LLP
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