Optical waveguides – Optical fiber waveguide with cladding – Utilizing nonsolid core or cladding
Reexamination Certificate
2007-08-14
2007-08-14
Hellner, Mark (Department: 3663)
Optical waveguides
Optical fiber waveguide with cladding
Utilizing nonsolid core or cladding
C385S127000
Reexamination Certificate
active
10608233
ABSTRACT:
By writing non-linear chirp into fiber Bragg gratings, greater control over dispersion compensation in CPA systems is obtained, such that, for example, the dispersion profile of the fiber Bragg grating and a bulk compressor may be matched. An iterative method of writing the fiber grating can reduce the group delay ripple to very low levels; and adaptive control of the fiber grating dispersion profile can further reduce these levels, while in addition offering greater acceptable yield in the manufacture of such gratings. Fiber Bragg gratings may be designed so as to provide customized pulse shapes optimized for various end uses, such as micromachining, for example, and may also be used to counteract gain-narrowing in a downstream amplifier.
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Fermann Martin E.
Harter Donald J.
Hartl Ingmar
Imeshev Gennady
Hellner Mark
IMRA America, Inc.
Knobbe Martens Olson & Bear LLP
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