Directly modulated optical module and method for driving...

Details Directly modulated optical module and method for driving... Directly modulated optical module and method for driving...

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.
patent: 01048481 (1989-02-01), None
patent: 11-214781 (1999-08-01), None
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.

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