In-line, high energy fiber chirped pulse amplification system
First Claim
1. A polarization maintaining air-clad fiber, comprising:
- a core region;
a material cladding region surrounding said core;
an air-cladding substantially surrounding said first cladding region; and
a layer surrounding said air cladding,where polarization maintaining operation of said fiber is obtained by the incorporation of stress producing regions that are fully disposed within and surrounded by said material cladding region.
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Accused Products
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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Citations
26 Claims
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1. A polarization maintaining air-clad fiber, comprising:
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a core region; a material cladding region surrounding said core; an air-cladding substantially surrounding said first cladding region; and a layer surrounding said air cladding, where polarization maintaining operation of said fiber is obtained by the incorporation of stress producing regions that are fully disposed within and surrounded by said material cladding region. - View Dependent Claims (2, 14, 15, 16)
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3. A polarization maintaining fiber, comprising:
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a fiber core having a diameter >
15 μ
m;a first cladding surrounding said core; and
further including stress-producing regions incorporated therein;an air cladding substantially surrounding said first cladding; and a third cladding surrounding said air cladding. - View Dependent Claims (17, 18, 19)
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4. A polarization maintaining optical fiber comprising:
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a fiber core; an inner cladding surrounding said core, said inner cladding having a cross-section comprising an outer surface having at least three-fold symmetry; a cladding region disposed about said core and about said inner cladding, said cladding region comprising a plurality of features disposed therein, said plurality of features forming an optical cladding for said core and said inner cladding; and a plurality of stress producing regions that induce birefringence in said fiber thereby producing polarization maintaining operation. - View Dependent Claims (5, 6, 7, 8, 20, 21, 22)
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9. A polarization maintaining optical fiber comprising:
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a fiber core; a single ring of regions disposed about said core, said regions forming an optical cladding for said core; and a plurality of stress producing regions that induce birefringence in said fiber thereby producing polarization maintaining operation. - View Dependent Claims (10, 11, 12, 13, 23, 24, 25, 26)
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Specification