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公开(公告)号:US4341441A
公开(公告)日:1982-07-27
申请号:US761746
申请日:1977-01-24
申请人: Paul E. Lighty , Philip W. Black , John Irven
发明人: Paul E. Lighty , Philip W. Black , John Irven
IPC分类号: C03B37/018 , G02B6/00 , G02B6/44 , C03B37/025 , C03B37/075
CPC分类号: C03B37/01861 , C03B37/01807 , C03B37/01853 , C03B37/01869 , G02B6/4492 , C03B2201/28 , C03B2201/30 , C03B2201/31 , C03B2201/32 , C03B2201/40 , C03B2201/42 , C03B2205/16
摘要: An optical glass fiber is formed of an inner layer of germania doped glass within the bore of the outer cladding tube of silica. The tube with the higher index of refraction inner layer is rotated while being heated to collapse the bore to form an optical fiber preform. The preform is then drawn into fiber in a separate operation. A first silica layer can be deposited within the tube bore before the germania doped layer. The deposition of germania takes place under hydrogen free conditions. Appropriate heat treatment of the tube avoids excessive evaporation of germania and provides a graded transition of the refractive index in the boundary between core and cladding.
摘要翻译: 光学玻璃纤维由二氧化硅外包层的孔内的由掺杂锗的玻璃的内层形成。 具有较高折射率内层的管旋转同时被加热以使孔塌缩以形成光纤预制件。 然后将预成型件在单独的操作中拉制成纤维。 第一二氧化硅层可以在氧化锗掺杂层之前沉积在管孔内。 铀的沉积在无氢条件下进行。 管的适当热处理避免了氧化锗的过度蒸发,并且提供了芯和包层之间的边界中折射率的渐变过渡。
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公开(公告)号:US4518407A
公开(公告)日:1985-05-21
申请号:US124380
申请日:1980-02-25
申请人: Philip W. Black , John Irven
发明人: Philip W. Black , John Irven
IPC分类号: C03B37/00 , C03B37/012 , C03B37/018 , C03B37/027 , G02B6/00 , C03B37/07
CPC分类号: C03B37/02754 , C03B37/01211 , C03B37/01248 , C03B37/01807 , C03B2201/02 , C03B2201/08 , C03B2203/28 , C03B2205/14 , C03B2205/16 , Y10S65/16
摘要: A rod of silica 14 is inserted into a substrate tube 10 whose bore is lined with a layer 11 of material having a refractive index less than that of silica. This layer 11 is itself covered with a layer 12 of silica. The assembly of the rod and tube is drawn into fibre, or its components are fused together to form a solid cross-section optical fibre preform.
摘要翻译: 将二氧化硅14的棒插入衬底管10中,衬底管10的孔衬有折射率小于二氧化硅的材料层11。 该层11本身被二氧化硅层12覆盖。 将棒和管的组件拉制成纤维,或将其组件熔合在一起以形成实心的横截面光纤预制件。
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公开(公告)号:US4335934A
公开(公告)日:1982-06-22
申请号:US201943
申请日:1980-10-29
申请人: Philip W. Black , John Irven
发明人: Philip W. Black , John Irven
IPC分类号: C03B8/04 , C03B20/00 , C03B37/018 , C03C3/06 , C03C13/04 , G02B6/00 , G02B5/172 , C03B37/075
CPC分类号: C03B37/018 , C03C13/045 , C03B2203/24 , Y10S65/16
摘要: Single mode optical fibre for operation in the wavelength range 1.5 to 1.7 microns is made by depositing a cladding glass layer and then a core glass layer upon the bore of a silica substrate tube. The bore of the coated tube is then collapsed to form a solid cross-section optical fibre preform. The cladding glass has an index matching that of silica and either contains no oxide of phosphorus or the minimal amount to provide a low enough deposition temperature and high enough deposition rate to provide an acceptably low diffusion of hydroxyl groups from the material of the substrate tube. Optionally the deposition of the cladding may be preceded by the deposition of a diffusion barrier layer which may contain a higher proportion of oxide of phosphorus.
摘要翻译: 通过在二氧化硅衬底管的孔上沉积包层玻璃层,然后沉积核心玻璃层,制造在1.5至1.7微米波长范围内操作的单模光纤。 然后涂覆的管的孔被折叠以形成实心的横截面光纤预制件。 包层玻璃具有与二氧化硅匹配的指数,并且不含磷的氧化物或最小量,以提供足够低的沉积温度和足够高的沉积速率,以提供从衬底管材料的羟基可接受的低扩散。 可选地,包层的沉积之前可以沉积可能含有较高比例的磷氧化物的扩散阻挡层。
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公开(公告)号:US4140505A
公开(公告)日:1979-02-20
申请号:US704146
申请日:1976-07-12
申请人: Melvin M. Ramsay , Philip W. Black
发明人: Melvin M. Ramsay , Philip W. Black
IPC分类号: C03B37/018 , G02B6/26 , C03C25/02 , C03B37/04
CPC分类号: C03B37/018 , G02B6/262 , C03B2203/18 , C03B2203/24 , C03B2203/26
摘要: A single mode optical fiber having a central core region of uniform composition and thickness and core end regions each having a core with a graded composition and increasing thickness. The fiber towards the ends of the fiber maintains a constant normalized frequency with a minimum bending loss. Methods are also provided for forming the fibers from a fiber optic preform.
摘要翻译: 具有均匀组成和厚度的中心芯区域和芯端部区域的单模光纤纤维每个都具有具有渐变组成和增加厚度的芯。 朝向纤维端部的光纤保持具有最小弯曲损耗的恒定归一化频率。 还提供了用于从光纤预制件形成纤维的方法。
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公开(公告)号:US4205901A
公开(公告)日:1980-06-03
申请号:US948447
申请日:1978-10-04
申请人: Melvin M. Ramsay , Philip W. Black
发明人: Melvin M. Ramsay , Philip W. Black
IPC分类号: C03B37/018 , G02B6/255 , G02B6/26 , G02B5/14
CPC分类号: G02B6/2552 , C03B37/018 , G02B6/262 , C03B2203/18 , C03B2203/24 , C03B2203/26
摘要: A single mode optical fiber having a central core region of uniform composition and thickness and core end regions each having a core with a graded composition and increasing thickness towards the ends of the fiber. The fiber maintains a constant normalized frequency with a minimum bending loss. Methods are also provided for forming the fibers from a fiber optic preform.
摘要翻译: 具有均匀组成和厚度的中心芯区域和芯端部区域的单模光纤,每个核心端部区域具有渐变组成并且朝着纤维端部增加的厚度。 纤维保持恒定的归一化频率,具有最小的弯曲损耗。 还提供了用于从光纤预制件形成纤维的方法。
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公开(公告)号:US4045668A
公开(公告)日:1977-08-30
申请号:US716338
申请日:1976-08-20
申请人: Gillies D. Pitt , Philip W. Black
发明人: Gillies D. Pitt , Philip W. Black
CPC分类号: G01N21/431 , G01F1/74 , G01N2021/154 , Y10S250/907
摘要: A device for measuring the proportion of a first liquid in a lower refractive index second liquid with which the first liquid is immiscible, such as oil in water. An unclad optical fiber, having an index of refraction between those of the two liquids but at least equal to and not more than ten percent greater than that of the first liquid. A light energy source and detector are connected by the immersed fiber and the light energy transmission measured to determine liquid proportions.
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公开(公告)号:US4915490A
公开(公告)日:1990-04-10
申请号:US363487
申请日:1989-06-08
IPC分类号: G02B6/44
CPC分类号: G02B6/443 , D07B1/147 , G02B6/4402 , G02B6/4486 , D07B2201/2002 , D07B2201/2096
摘要: A crush-resistant tube for a plastics packaged optical fibre (1, 2) is formed by helically stranding together five or more non-circular cross-section wires (3) which are created from circular cross-section wires during the stranding operation.
摘要翻译: 用于塑料包装光纤(1,2)的耐挤压管通过在绞合操作期间将由圆形横截面线产生的五个或更多个非圆形横截面线(3)螺旋绞合在一起而形成。
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公开(公告)号:US4915469A
公开(公告)日:1990-04-10
申请号:US325788
申请日:1989-03-20
申请人: Kevin C. Byron , Philip W. Black , Terry Bricheno , John S. Leach
发明人: Kevin C. Byron , Philip W. Black , Terry Bricheno , John S. Leach
CPC分类号: G02B6/2813 , H01S3/06754 , H01S3/06783
摘要: An optical fibre star coupler in which the mixer element (11, 21, 45) exhibits optical gain. This allows the use of couplers having a relatively large number of outputs without the requirement for an excessive power level for any input signal.
摘要翻译: 一种光纤星形耦合器,其中混频器元件(11,21,45)表现出光学增益。 这允许使用具有相对大数量的输出的耦合器,而不需要任何输入信号的过大功率电平。
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公开(公告)号:US4202682A
公开(公告)日:1980-05-13
申请号:US850116
申请日:1977-11-10
申请人: Philip W. Black
发明人: Philip W. Black
摘要: A method of making high purity glass by heating some of the glass ingredients in powder form to form a melt while adding other glass ingredients to the melt by chemical vapor deposition.
摘要翻译: 通过加热一些粉末形式的玻璃成分以形成熔体同时通过化学气相沉积向熔体中加入其它玻璃成分来制备高纯度玻璃的方法。
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公开(公告)号:US4372648A
公开(公告)日:1983-02-08
申请号:US201944
申请日:1980-10-29
申请人: Philip W. Black
发明人: Philip W. Black
CPC分类号: G02B6/03694 , C03C13/045 , G02B6/02042 , G02B6/032 , G02B6/03688 , Y10S65/16
摘要: A secure optical fibre consists of an inner waveguiding structure surrounded by an outer waveguiding structure and separated therefrom by an optical absorbing layer (3) rendered absorbing by irradiation. The inner waveguiding structure comprises a core (1) surrounded by a lower refractive index cladding layer (2). The outer waveguiding structure comprises an annular core layer (5) sandwiched between lower refractive index inner and outer cladding layers (4 and 6).
摘要翻译: 安全的光纤由外波导结构包围的内波导结构组成,并由通过照射吸收的光吸收层(3)分离。 内部波导结构包括被低折射率包层(2)包围的芯体(1)。 外波导结构包括夹在低折射率内包层(4和6)之间的环形芯层(5)。
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