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| Optical fiber connector |
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| Optical fiber biconic connector |
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Synthetic resin optical fiber
| Details |
Inventors: Abe, Tomiya; Shimazaki, Yukio; Ishibashi, Takanobu; Abe, Norimoto; Asai, Takayasu; Taketani, Noriaki;
Assignee: Hitachi Cable, Ltd. & Hitachi, Ltd. (Tokyo, JP)
Primary Examiner: Sikes; William L.
Assistant Examiner: Healy; Brian M.
Attorney, Agent or Firm: Lowe, Price, LeBlanc, Becker & Shur
A synthetic resin optical fiber having the structure simplified and a stable light transmission characteristic is disclosed. The synthetic resin optical fiber comprises a transparent core and a cladding formed around the core, and the cladding has an inner transparent portion and an outer peripheral portion containing a light interruption substance such as a pigment and the like. |
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DETAILED DESCRIPTION What is claimed is: 1.
A synthetic resin optical fiber comprising: a core of a transparent synthetic resin for the transmission of light and having a first predetermined refractive index; and a cladding formed around the core and having a second predetermined refractive index lower than said first predetermined refractive index, said cladding layer containing 0.
03 to 5 weight % of a light interruption substance such as a pigment or the like in a region of said cladding layer equal to or greater than half a wavelength of transmission light from the interface between said core and said cladding layer, said cladding layer including a region less than half a wavelength of transmission light from the interface between said core and cladding layer that is substantially free of the light interruption substance.
2.
A synthetic resin optical fiber according to claim 1, wherein said light interruption substance is at least one selected from carbon black, graphite, a metal oxide, a metal sulfide, and an organic pigment.
3.
A synthetic resin optical fiber according to claim 1, wherein said cladding layer contains 0.
05 to 1% by weight of said light interruption substance therein.
4.
A synthetic resin optical fiber according to claim 1, wherein said cladding layer is of a resin selected from hexafluoroethylene-tetrafluoropropylene copolymer, ethylene-tetrafluoroethylene copolymer, vinylidene fluoride polymer, vinylidene fluoride-tetrafluoroethylene polymer, tetrafluoroethylene-perfluou-alkylvinylether copolymer, chlorotrifluoroethylene polymer, vinyl acetateethylene copolymer, tetramethyl-1-pentene polymer, and methylmethacrylate polymer.
5.
A synthetic resin optical fiber comprising: a core of a transparent synthetic resin for the transmission of light and having a first predetermined refractive index; and a cladding layer formed around said core and having a second refractive index lower than first predetermined refractive index, said cladding layer containing 0.
03 to 5 weight % of a light interruption substance such as a pigment or the like in a region of said cladding layer equal to or greater than 1
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I/O Systems 
