E-O probe with FOP and voltage detecting apparatus using the E-O probe
First Claim
1. An E-O probe comprising:
- a fiber optic plate having an upper face and a bottom face, comprising a bundle of a plurality of optical fibers fused into one block such that each optical fiber forms an optical path between said upper face and said bottom face, each of said optical fibers including a core and a cladding, said core surrounded by said cladding, and each core separated from the other cores by the cladding;
an electro-optic material attached to an end of each core at said bottom face side, a refractive index of said electro-optic material varying in response to an intensity of an electric field applied to said electro-optic material; and
a reflecting surface formed on said bottom face of said fiber optic plate such that said electro-optic material is sandwiched between said cores and said reflecting surface.
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Accused Products
Abstract
An E-O probe for a two-dimentional voltage detecting apparatus using a fiber optic plate is provided. The fiber optic plate has a bottom face facing a measured object and a bundle of a plurality of cores separated from one another by cladding electro-optic material is attached to an end of each core at said bottom face side. A reflecting surface is provided on the bottom face side of the fiber optic plate for reflecting light back toward the side of the fiber optic plate opposite said bottom face. The refractive index of said electro-optic material varies in response to the intensity of an electric field applied to the electro-optic material. A two-dimentional voltage detecting apparatus using the E-O probe is further provided which has a high spatial resolution.
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Citations
24 Claims
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1. An E-O probe comprising:
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a fiber optic plate having an upper face and a bottom face, comprising a bundle of a plurality of optical fibers fused into one block such that each optical fiber forms an optical path between said upper face and said bottom face, each of said optical fibers including a core and a cladding, said core surrounded by said cladding, and each core separated from the other cores by the cladding; an electro-optic material attached to an end of each core at said bottom face side, a refractive index of said electro-optic material varying in response to an intensity of an electric field applied to said electro-optic material; and a reflecting surface formed on said bottom face of said fiber optic plate such that said electro-optic material is sandwiched between said cores and said reflecting surface.
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2. A two-dimensional voltage detecting apparatus comprising:
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an E-O probe comprising a fiber optic plate having an upper face and a bottom face, comprising a bundle of a plurality of optical fibers fused into one block such that each optical fiber forms an optical path between said upper face and said bottom face, each of said optical fibers including a core and a cladding, said core surrounded by said cladding, and each core separated from the other cores by the cladding; an electro-optic material attached to an end of each core at said bottom face side, a refractive index of said electro-optic material varying in response to an intensity of an electric field applied to said electro-optic material; and a reflecting surface formed on said bottom face of said fiber optic plate such that said electro-optic material is sandwiched between said cores and said reflecting surface. a light source for irradiating said upper face with light; and a photodetector for detecting light emerging from said upper face; whereby said photodetector detects light emerging from said upper face after the light from said light source irradiates said upper face, is guided towards said bottom face by said cores, passes through said electro-optic material, is reflected by said reflecting surface, and comes back to said upper face. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 19, 20, 23, 24)
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10. A two-dimensional voltage detecting apparatus comprising:
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an E-O probe comprising a fiber optic plate having an upper face and a bottom face, comprising a rigid bundle of a plurality of optical fibers fused into one block such that each optical fiber forms an optical path between said upper face and said bottom face, each of said optical fibers including a core and a cladding, said core surrounded by said cladding, and each core separated from the other cores by the cladding; an electro-optic material attached to an end of each core at said bottom face side, a refractive index of said electro-optic material varying in response to an intensity of an electric field applied to said electro-optic material; and a reflecting surface formed on said bottom face of said fiber optic plate such that said electro-optic material is sandwiched between said cores and said reflecting surface; a flexible bundle of a plurality of optical fibers, said flexible bundle having a first face at one end of the bundle and a second face at another end of the bundle, each optical fiber forming a substantially parallel optical path between said first face and said second face, said flexible bundle being fixed to said fiber optic plate, so that said first face of said flexible bundle abuts on said upper face of said fiber optic plate; a light source for irradiating said second face with light; and a photodetector for detecting light emerging from said second face; whereby said photodetector detects light emerging from said second face of said flexible bundle after the light from said light source irradiates said second face, is guided towards said first face through said optical fibers of said flexible bundle, then is guided towards said bottom face of said fiber optic plate by said cores of said fiber optic plate, passes through said electro-optic material, is reflected by said reflecting surface, and comes back to said second face via said cores of said fiber optic plate and then via said optical fibers of said flexible bundle. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 21, 22)
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18. A two-dimensional voltage detecting apparatus comprising:
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an E-O probe comprising a fiber optic plate having an upper face and a bottom face, comprising a rigid bundle of a plurality of optical fibers fused into one block such that each optical fiber forms an optical path between said upper face and said bottom face, each of said optical fibers including a core and a cladding, said core surrounded by said cladding, and each core separated from the other cores by the cladding, an electro-optic material attached to an end of each core at said bottom face side, a refractive index of said electro-optic material varying in response to an intensity of an electric field applied to said electro-optic material, and a reflecting surface formed on said bottom face of said fiber optic plate such that said electro-optic material is sandwiched between said cores and said reflecting surface; a light source for irradiating said upper face with light; a plurality of photodetectors for detecting light emerging from said upper face; and a flexible bundle of optical fibers, said flexible bundle having a lower face at one end of the bundle, said lower face being disposed in an optical path of light emerging from said upper face of said fiber optic plate, said flexible bundle having the other end with separated fibers, each of said separated fibers being separately connected with each of the plurality of said photodetectors; whereby said photodetectors detect light emerging from said upper face after the light from said light source irradiates said upper face, is guided towards said bottom face by said cores, passes through said electro-optic material, is reflected by said reflecting surface, comes back to said upper face, and is guided from said lower face of said flexible bundle to said photodetectors by said separated fibers.
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Specification