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OPTICAL FIBER WITH INVERSE TRIANGULAR TRENCH DESIGN
OPTICAL FIBER WITH INVERSE TRIANGULAR TRENCH DESIGN
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机译:具有逆三角形沟槽设计的光纤
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摘要
A single mode optical fiber is provided that includes a core region having an outer radius r1 and a maximum relative refractive index Δ1max. The single mode optical fiber further includes a cladding region surrounding the core region, the cladding region includes a depressed-index cladding region, a relative refractive index Δ3 of the depressed-index cladding region increasing with increased radial position. The single mode optical fiber has a bend loss at 1550 nm for a 15 mm diameter mandrel of less than about 0.75 dB/turn, a bend loss at 1550 nm for a 20 mm diameter mandrel of less than about 0.2 dB/turn, and a bend loss at 1550 nm for a 30 mm diameter mandrel of less than 0.005 dB/turn. Additionally, the single mode optical fiber has a mode field diameter of 9.0 microns or greater at 1310 nm wavelength.
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机译:提供单模光纤,其包括具有外半径R1的核心区域和最大相对折射率Δ1max。 单模光纤还包括围绕芯区域的包层区域,包层包括凹陷指数包层区域,凹陷指数包层的相对折射率Δ3随着径向位置增加而增加。 单模光纤在1550nm的1550nm处具有弯曲损耗,对于15mm直径的心轴小于约0.75dB /匝,弯曲损耗为1550nm,为20mm直径的心轴小于约0.2 dB /匝,A 1550nm的弯曲损耗为30 mm直径的心轴小于0.005 dB /转。 另外,单模光纤的模式场直径为9.0微米或更大,在1310nm波长下。
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