Coherent light generators – Particular resonant cavity – Distributed feedback
Reexamination Certificate
2007-10-09
2009-06-02
Rodriguez, Armando (Department: 2828)
Coherent light generators
Particular resonant cavity
Distributed feedback
C372S026000
Reexamination Certificate
active
07542503
ABSTRACT:
A directly modulated distributed feedback (DFB) laser with improved optical field uniformity and mode stability may include a laser cavity and a distributed reflector and/or external reflectors. The distributed reflector may be a Bragg grating and may extend asymmetrically over a only portion of the laser cavity. The external reflectors may themselves be distributed Bragg reflectors and may have unequal reflectances. Optical field uniformity may be improved by adjusting the length and/or position of the distributed reflector in the laser cavity. Optical field uniformity may be improved by adjusting a coupling strength parameter, which is a function of a coupling coefficient, κ, and the length of the distributed reflector.
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Applied Optoelectronics, Inc.
Grossman, Tucker, Perrault & Pfleger LLC
Kinsella Norman Stephen
Rodriguez Armando
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