首页> 外国专利> Method for qualifying the effective modal bandwidth of a multimode fiber over a wide wavelength range from a single wavelength DMD measurement and method for selecting a high effective modal bandwidth multimode fiber from a batch of multimode fibers

Method for qualifying the effective modal bandwidth of a multimode fiber over a wide wavelength range from a single wavelength DMD measurement and method for selecting a high effective modal bandwidth multimode fiber from a batch of multimode fibers

机译：从单波长DMD测量中鉴定多模光纤的有效模态带宽的方法以及从一批多模光纤中选择高效模态带宽的多模光纤的方法

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摘要

The invention relates to a method for qualifying the actual effective modal bandwidth of a multimode optical fiber over a predetermined wavelength range, comprising the steps of: carrying out (30) a Dispersion Modal Delay (DMD) measurement of the multimode optical fiber at a single wavelength to obtain an actual DMD plot; generating (32) at least two distinct modified DMD plots from the actual DMD plot, each modified DMD plot being generated by applying to the recorded traces a temporal delay Δt that increases in absolute values with the radial offset value r_offset, each modified DMD plot being associated with a predetermined bandwidth threshold (S1; S2); for each modified DMD plot, computing (33) an effective modal bandwidth as a function of said modified DMD plot and comparing (34) the computed effective modal bandwidth (EMBc₁; EMBc₂) with the bandwidth threshold value to which the modified DMD plot is associated; (35) qualifying the actual effective modal bandwidth as a function of results from the comparing step.

机译：本发明涉及一种用于在预定的波长范围内对多模光纤的实际有效模态带宽进行鉴定的方法，该方法包括以下步骤：进行（ 30 ）色散模态延迟（DMD）测量。多模光纤在单个波长下获得实际的DMD图;从实际DMD图生成（ 32 ）至少两个截然不同的修改后的DMD图，每个修改后的DMD图是通过向记录的迹线施加时间延迟＆＃x394; t来产生的，该时间的绝对值随径向偏移值r _{offset ，每个修改的DMD图与预定带宽阈值（S1; S2）相关;对于每个修改的DMD图，计算（ 33 ）作为所述修改的DMD图的函数的有效模态带宽，并比较（ 34 ）计算的有效模态带宽（EMBc _{1 ; EMBc _{2 ）以及与修改的DMD图相关联的带宽阈值; （ 35 ）将实际有效模式带宽限定为比较步骤结果的函数。}}} 展开▼

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公开/公告号US10533927B2

专利类型

公开/公告日2020-01-14

原文格式PDF

申请/专利权人 DRAKA COMTEQ B.V.;
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申请/专利号US201715448040

发明设计人 DENIS MOLIN;PIERRE SILLARD;MARIANNE BIGOT;
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申请日2017-03-02

分类号G01M11;

国家 US

入库时间 2022-08-21 11:28:56

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机译：在单波长DMD测量中确定整个波长范围内多模光纤有效模态带宽的方法和从一批多模光纤中选择高效模态带宽多模光纤的方法

5. METHOD FOR QUALIFYING THE EFFECTIVE MODAL BANDWIDTH OF A MULTIMODE FIBER OVER A WIDE WAVELENGTH RANGE FROM A SINGLE WAVELENGTH DMD MEASUREMENT AND METHOD FOR SELECTING A HIGH EFFECTIVE MODAL BANDWIDTH MULTIMODE FIBER FROM A BATCH OF MULTIMODE FIBERS [P] . 欧洲知识产权局专利： EP3189320A1 . 2017-07-12

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