MICROSTRUCTURED FIBER AND SUPERCONTINUUM LIGHT SOURCE
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Abstract
A microstructured optical fiber including a core region and a cladding region which surrounds the core region. The cladding region includes a plurality of cladding features within a cladding background material, wherein the cladding region includes an inner cladding region with at least one inner ring of cladding features and an outer cladding region with at least three outer cladding rings of outer cladding features. The inner cladding features have a first characteristic diameter and the outer cladding region includes a plurality of outer cladding features having a characteristic diameter smaller than the first characteristic diameter. The first characteristic diameter is at least about 10% larger than an average diameter of the outer cladding features and the core region has a diameter of at least about 2 μm. A cascade optical fiber with at least one fiber as described, as well as a source of optical supercontinuum generation.
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Citations
74 Claims
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1-54. -54. (canceled)
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55. A microstructured optical fiber having a length and a longitudinal axis along its length and comprising:
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a core region capable of guiding light along said longitudinal axis and a cladding region which surrounds the core region, said cladding region comprising a cladding background material and a plurality of cladding features within the cladding background material, said cladding features being arranged around the core region, wherein said cladding region comprises an inner cladding region comprising an inner cladding ring of inner cladding features having a first characteristic diameter d1 and an outer cladding region comprising an outer cladding ring of outer cladding features, said plurality of cladding features comprising said inner cladding features of said inner rings and said outer cladding features of said outer cladding ring, wherein said inner cladding ring and said outer cladding ring each comprise bridges of cladding background material separating adjacent features of the ring, wherein the bridges of the inner ring have an average minimum width w1, and the bridges of said outer cladding ring have an average minimum width w2, where w2 is at least about 10% larger than w1, wherein the outer cladding features have a characteristic diameter smaller than the first characteristic diameter d1, wherein the average minimum width w1 is smaller than the first characteristic diameter (d1), and wherein the core region has a diameter of at least about 2 μ
m. - View Dependent Claims (56, 57, 58, 59)
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60. A microstructured optical fiber having a length and a longitudinal axis along its length and comprising:
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a core region capable of guiding light along said longitudinal axis and a cladding region which surrounds the core region, said cladding region comprising a cladding background material and a plurality of cladding features within the cladding background material, said cladding features being arranged around the core region, wherein said cladding region comprises an inner cladding region comprising an innermost ring of cladding features having a first characteristic diameter d1 and an outer cladding region comprising at an outer cladding ring of outer cladding features, said plurality of cladding features comprises said cladding features of said innermost ring and of said outer cladding ring. wherein said innermost ring and said outer cladding ring each comprise bridges of cladding background material separating adjacent features of the ring, wherein the bridges of the innermost ring have an average minimum width (w1), where an average minimum width (w2) of the bridges of an outer ring are at least about 10% larger than the average minimum with (w1) of the bridges of the innermost ring, wherein the outer cladding features have a characteristic diameter smaller than the first characteristic diameter (d1), and wherein W1 is smaller than the first characteristic diameter (d1). - View Dependent Claims (61, 62, 63, 64, 65)
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66. A microstructured optical fiber having a length and a longitudinal axis along its length and comprising:
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a core region capable of guiding light along said longitudinal axis and a cladding region which surrounds the core region, said cladding region comprising a cladding background material and a plurality of cladding features within the cladding background material, said cladding features being arranged around the core region, wherein said cladding region comprises an inner cladding region comprising an innermost ring of cladding features having a first characteristic diameter d1 and an outer cladding region comprising an outer cladding ring of outer cladding features, wherein said innermost ring and said outer cladding ring each comprise bridges of cladding background material separating adjacent features of the ring, wherein the bridges of the innermost ring have an average minimum width w1, where an average minimum width w2 of the bridges of said outer ring are at least about 10% larger than w1, and said microstructured optical fiber being configured to provide supercontinuum radiation including light at wavelengths below 500 nm when pumped by pump radiation generated by a pump laser source. - View Dependent Claims (67, 68, 69, 70, 71, 72, 73, 74)
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Specification