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1. 发明授权

US5448673A Controlled dopant diffusion for fiber optic coupler 失效
标题翻译：光纤耦合器的受控掺杂剂扩散
公开(公告)号：US5448673A
公开(公告)日：1995-09-05
申请号：US106274
申请日：1993-08-12
申请人： Kent A. Murphy , Michael F. Gunther , Angela J. Plante , Veerendra B. Vuppala , Mallika B. Sen , Nirmal Velayudhan , Richard O. Claus
发明人： Kent A. Murphy , Michael F. Gunther , Angela J. Plante , Veerendra B. Vuppala , Mallika B. Sen , Nirmal Velayudhan , Richard O. Claus
IPC分类号： G02B6/28 , G02B6/10
CPC分类号： G02B6/2835 , G02B6/2856
摘要： Uniformity of optical coupling of optical elements such as star couplers and splitters is improved by heat treatment which causes dopants in the core of an optical fiber to diffuse into material from the cladding layer of the optical fibers from which the optical element is formed, resulting in a substantially homogeneous interior region of the star coupler or splitter. Increased lossiness of the optical element thus formed may be limited by termination of the heat treatment before dopant diffusion reaches equilibrium throughout the fibers so that a portion of the cladding layer of the fibers remains surrounding the substantially homogeneous region where the fibers have been fused together.
摘要翻译：通过热处理改善诸如星形耦合器和分离器之类的光学元件的光耦合的均匀性，这使得光纤的芯中的掺杂剂从形成光学元件的光纤的包层扩散到材料中，导致星形耦合器或分离器的基本均匀的内部区域。由此形成的光学元件的增加的损耗可以通过在掺杂剂扩散在整个纤维之间达到平衡之前终止热处理来限制，使得纤维的包层的一部分保持围绕着纤维已经熔合在一起的基本均匀的区域。

2. 发明授权

US5809189A Controlled dopant diffusion for fiber optic coupler 失效
标题翻译：光纤耦合器的受控掺杂剂扩散
公开(公告)号：US5809189A
公开(公告)日：1998-09-15
申请号：US523596
申请日：1995-09-05
申请人： Kent A. Murphy , Michael F. Gunther , Angela J. Plante , Veerendra B. Vuppala , Mallika B. Sen , Nirmal Velayudhan , Richard O. Claus
发明人： Kent A. Murphy , Michael F. Gunther , Angela J. Plante , Veerendra B. Vuppala , Mallika B. Sen , Nirmal Velayudhan , Richard O. Claus
IPC分类号： G02B6/28 , G02B6/10
CPC分类号： G02B6/2835 , G02B6/2856
摘要： Uniformity of optical coupling of optical elements such as couplers and splitters is improved by heat treatment which causes dopants in the core of an optical fiber to diffuse into material from the cladding layer of the optical fibers from which the optical element is formed, resulting in a substantially homogeneous interior region of the star coupler or splitter. Increased lossiness of the optical element thus formed may be limited by termination of the heat treatment before dopant diffusion reaches equilibrium throughout the fibers so that a portion of the cladding layer of the fibers remains surrounding the substantially homogeneous region where the fibers have been fused together. Dopant diffusion is constrained to a substantially radial direction in each fiber by uniformity of heating over a region where at least two fibers are twisted together. Thus dopant diffusion is highly repeatable and can be readily regulated to provide highly selective, wavelength-dependent coupling between fibers, particularly for multiplexing and demultiplexing applications.
摘要翻译：通过热处理改善了诸如耦合器和分离器之类的光学元件的光耦合的均匀性，其使得光纤芯中的掺杂剂从形成光学元件的光纤的包覆层扩散到材料中，导致星形耦合器或分离器的基本均匀的内部区域。由此形成的光学元件的增加的损耗可以通过在掺杂剂扩散在整个纤维之间达到平衡之前终止热处理来限制，使得纤维的包层的一部分保持围绕着纤维已经熔合在一起的基本均匀的区域。通过在至少两根纤维被扭绞在一起的区域上的加热均匀性，掺杂剂扩散被限制在每个纤维中基本上径向的方向。因此，掺杂剂扩散是高度可重复的，并且可以容易地调节以提供光纤之间的高选择性，波长依赖性耦合，特别是对于复用和解复用应用。

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