Optical waveguides – Optical fiber bundle – Imaging
Patent
1990-03-30
1991-09-17
Sikes, William L.
Optical waveguides
Optical fiber bundle
Imaging
385124, 385142, 385144, G02B 606
Patent
active
050489232
ABSTRACT:
An image fiber preform for use in an image fiber according to the present invention includes a plurality of optical fiber strands, each optical fiber strand including a silica glass core which contains a dopant for increasing a refractive index of the core and a silica glass cladding surrounding the silica glass core, the silica glass cladding containing a fluorine dopant for decreasing a refractive index of the cladding, the cladding having an outer peripheral surface, and a quartz tube in which the optical fibers are closely arranged, wherein the cladding has a concentration of the fluorine dopant which decreases radially outward toward the outer peripheral surface of the cladding. in the present invention, an image fiber prepared from the image fiber preform and fabrication processes for the image fiber preform and the image fiber are provided.
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Sanada Kazuo
Seto Katsuyuki
Shamoto Naoki
Tanaka Kouji
Tanaka Toshiyuki
Fujikura Ltd.
Sikes William L.
Wise Robert E.
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