Optoelectronic fiber photodetector
First Claim
1. A fiber photodetector comprising:
- a semiconducting element having a fiber length and being characterized as a non-composite semiconducting chalcogenide glass material selected from the group consisting of (As40Se60)1-xSnx, As40Se50Te10Sn5, and As2Se3, in at least one fiber direction;
at least one pair of conducting electrodes in contact with the semiconducting element along the fiber length; and
an insulator along the fiber length.
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Accused Products
Abstract
The invention provides an optical fiber photodetector including a photoconductive element, such as a semiconducting element, having a fiber length. The semiconducting element is characterized as a non-composite material in at least one fiber direction. At least one pair of conducting electrodes is in contact with the semiconducting element along the fiber length, and an insulator is provided along the fiber length. An optical resonator can be disposed along the fiber length and along a path of illumination to the semiconducting element. The resonator is dimensioned to substantially reflect all illumination wavelengths except for a prescribed range of wavelengths transmitted to the semiconducting element. The fiber photodetector can be arranged in a photodetecting fiber grid, photodetecting fiber fabric, or other configuration for detecting incident illumination.
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Citations
77 Claims
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1. A fiber photodetector comprising:
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a semiconducting element having a fiber length and being characterized as a non-composite semiconducting chalcogenide glass material selected from the group consisting of (As40Se60)1-xSnx, As40Se50Te10Sn5, and As2Se3, in at least one fiber direction; at least one pair of conducting electrodes in contact with the semiconducting element along the fiber length; and an insulator along the fiber length. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
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36. A photodetecting fiber grid comprising:
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a plurality of rows of fiber photodetectors; a plurality of columns of fiber photodetectors; wherein each fiber photodetector includes a semiconducting element having a fiber length and is characterized as a non-composite semiconducting chalcogenide glass material selected from the group consisting of (As40Se60)1-xSnx, As40Se50Te10Sn5, and As2Se3, in at least one fiber direction, at least one pair of conducting electrodes in contact with the semiconducting element along the fiber length, and an insulator along the fiber length; and wherein each fiber photodetector is connected to a sensing circuit for detecting coordinates of illumination incident on the fiber grid. - View Dependent Claims (37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57)
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58. A fiber photodetector comprising:
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a semiconducting element having a fiber length and being characterized as a non-composite material in at least one fiber direction; at least one pair of conducting electrodes in contact with the semiconducting element along the fiber length; an insulator along the fiber length; and an optical resonator disposed along the fiber length and along a path of illumination to the semiconducting element, the resonator being dimensioned to substantially reflect all illumination wavelengths except for a prescribed range of wavelengths transmitted to the semiconducting element. - View Dependent Claims (59, 60, 61, 62, 63, 64)
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65. A fiber photodetector comprising:
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a plurality of concentric circumferential layers of semiconducting elements each having a fiber length and being characterized as a non-composite material in at least one fiber direction, and separated by an insulator, and each in contact with at least one pair of conducting electrodes along the fiber length; and an insulator alone the fiber length. - View Dependent Claims (66)
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67. A fiber photodetector comprising:
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a semiconductor element having a fiber length and being characterized as a non-composite material in at least one fiber direction; at least one pair of conducting electrodes in contact with the semiconducting element along the fiber length; and a polymeric insulating material selected from the group of poly-ether imide, poly-ether sulfone, and poly-methyl methacrylate, along the fiber length. - View Dependent Claims (68)
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69. A fiber photodetector comprising:
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a semiconducting element having a fiber length and being characterized as a non-composite material in at least one fiber direction; at least one pair of conducting electrodes in contact with the semiconducting element along the fiber length; and an insulating alone the fiber length; wherein photodetection properties characteristic of the fiber photodetector are maintained at an operating temperature of at least about 150°
C. and a duration of at least about 24 hours. - View Dependent Claims (70)
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71. A photodetecting fiber fabric comprising:
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a plurality of fiber photodetectors woven together; wherein each fiber photodetector includes a semiconducting element having a fiber length and is characterized as a non-composite semiconducting chalcogenide glass material selected from the group consisting of (As40Se60)1-xSnx, As40Se50Te10Sn5, and As2Se3, in at least one fiber direction, at least one pair of conducting electrodes in contact with the semiconducting element along the fiber length, and an insulator along the fiber length; and wherein each fiber photodetector is connected to a sensing circuit for detecting illumination incident on the fiber fabric. - View Dependent Claims (72, 73)
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74. A fiber photodetector comprising:
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a photoconductive element having a fiber length; at least one pair of conducting electrodes in contact with the photoconductive element along the fiber length; and an insulator along the fiber length; the photoconductive element, conducting electrodes, and insulator being disposed in a geometric relationship corresponding to a drawing preform of the fiber.
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75. A fiber photodetector comprising:
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a photoconductive element having a fiber length; at least one pair of conducting electrodes in contact with the photoconductive element along the fiber length; and an insulator along the fiber length; the photoconductive element, conducting electrodes, and insulator each being characterized by a viscosity that is less than about 106 Poise, while maintaining structural material integrity, at a common fiber draw temperature. - View Dependent Claims (76)
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77. A fiber photodetector comprising:
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a photoconductive element having a fiber length; at least one pair of conducting electrodes in contact with the photoconductive element along the fiber length; and an insulator along the fiber length; the photoconductive element, conducting electrodes, and insulator each being characterized by a viscosity that is less than about 106 Poise, while maintaining material properties, at a common fiber draw temperature.
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Specification