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公开(公告)号：BR0111246A
公开(公告)日：2004-12-07
申请号：BR0111246
申请日：2001-06-12
Applicant: SCIENTIFIC ATLANTA
Inventor： ANTHON DOUGLAS W , FISHER JAMES H
Abstract: Systems and methods are described for the construction of micro-optical couplers incorporating optical tapers to reshape multimode optical inputs. Incorporating tapers allows the spatial properties of the multimode inputs to be adjusted to match to the spatial properties of the output fiber, even in systems that are limited to unity-magnification imaging optics. In an exemplary embodiment, a larger-core multimode fiber and a smaller-core double-clad fiber are glued into a glass capillary, with the multimode fiber tapering to a smaller diameter inside the capillary. Polishing the capillary to expose the taper gives a multimode core that is smaller than the double-clad core. Imaging with unity magnification through a GRIN lenses and a dichroic reflector transfers the multimode input efficiently to the double-clad fiber with greater efficiency than would have been possible with the same optics and an untapered fiber. The dichroic reflector is transparent to a second singlemode signal input, which is collimated by a second GRIN lens and coupled to through the reflector to the core of the double-clad fiber. An isolator may be included in the signal beam path, and the double-clad fiber may be replaced by a double-clad gain fiber.
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公开(公告)号：ES2191576T1
公开(公告)日：2003-09-16
申请号：ES01946250
申请日：2001-06-12
Applicant: SCIENTIFIC ATLANTA
Inventor： ANTHON DOUGLAS W , FISHER JAMES H
Abstract: Systems and methods are described for the construction of micro-optical couplers incorporating optical tapers to reshape multimode optical inputs. Incorporating tapers allows the spatial properties of the multimode inputs to be adjusted to match to the spatial properties of the output fiber, even in systems that are limited to unity-magnification imaging optics. In an exemplary embodiment, a larger-core multimode fiber and a smaller-core double-clad fiber are glued into a glass capillary, with the multimode fiber tapering to a smaller diameter inside the capillary. Polishing the capillary to expose the taper gives a multimode core that is smaller than the double-clad core. Imaging with unity magnification through a GRIN lenses and a dichroic reflector transfers the multimode input efficiently to the double-clad fiber with greater efficiency than would have been possible with the same optics and an untapered fiber. The dichroic reflector is transparent to a second singlemode signal input, which is collimated by a second GRIN lens and coupled to through the reflector to the core of the double-clad fiber. An isolator may be included in the signal beam path, and the double-clad fiber may be replaced by a double-clad gain fiber.
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公开(公告)号：WO0196920A3
公开(公告)日：2002-05-30
申请号：PCT/US0118828
申请日：2001-06-12
Applicant: SCIENTIFIC ATLANTA
Inventor： ANTHON DOUGLAS W , FISHER JAMES H
CPC classification number: G02B6/2937 , G02B6/2746 , G02B6/32 , G02B6/327 , G02F1/093 , G02F1/0955 , H01S3/094003
Abstract: Systems and methods are described for the construction of micro-optical couplers incorporating optical tapers to reshape multimode optical inputs. Incorporating tapers allows the spatial properties of the multimode inputs to be adjusted to match to the spatial properties of the output fiber, even in systems that are limited to unity-magnification imaging optics. In an exemplary embodiment, a larger-core multimode fiber (110) and a smaller-core double-clad fiber (109) are glued into a glass capillary (101), with the multimode fiber tapering to a smaller diameter inside the capillary. Polishing the capillary to expose the taper gives a multimode core that is smaller than the double-clad core. Imaging with unity magnification through a GRIN lenses (104, 107) and a dichroic reflector (106) transfers the multimode input efficiently to the double-clad fiber with greater efficiency than would have been possible with the same optics and an untapered fiber. The dichroic reflector is transparent to a second singlemode signal input (100), which is collimated by a second GRIN lens (104) and coupled to through the reflector (106) to the core of the double-clad fiber (109). An isolator (105) may be included in the signal beam path, and the double-clad fiber may be replaced by a double-clad gain fiber.
Abstract translation: 描述了用于构建包含光锥的微光耦合器来重构多模光输入的系统和方法。 结合锥度允许调整多模输入的空间属性以匹配输出光纤的空间属性，即使在限于单位放大成像光学系统的系统中也是如此。 在一个示例性实施例中，大芯多纤维（110）和较小芯双包层光纤（109）被胶合到玻璃毛细管（101）中，多模光纤在毛细管内逐渐变细。 抛光毛细管以暴露锥度给出了比双包层核心小的多模芯。 通过GRIN透镜（104,107）和二向色反射器（106）以单位放大率成像，以比相同光学元件和无光纤维可能的效率更高的效率将多模输入有效地传送到双包层光纤。 二向色反射器对于由第二GRIN透镜（104）准直并通过反射器（106）耦合到双包层光纤（109）的芯的第二单模信号输入（100）是透明的。 隔离器（105）可以包括在信号光束路径中，并且双包层光纤可以由双包层增益光纤代替。
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