METHOD OF SELECTING OPTIMIZED MULTIMODE OPTICAL FIBERS

    公开(公告)号:WO2023048972A1

    公开(公告)日:2023-03-30

    申请号:PCT/US2022/043172

    申请日:2022-09-12

    Abstract: A method of categorizing a group of multimode optical fibers, the method including comparing an effective modal bandwidth of a first multimode optical fiber with a first threshold, the first multimode optical fiber being in a group of multimode optical fibers meeting a first OM-standard and the first threshold being an effective modal bandwidth of the first multimode optical fiber. The method further including categorizing the first multimode optical fiber as meeting OM functional requirements of a second OM-standard if the effective modal bandwidth of the first multimode optical fiber is equal to or above the first threshold, wherein the second OM-standard is higher than the first OM-standard.

    METHODS OF MANUFACTURING AN OPTICAL FIBER USING AXIAL TENSION CONTROL TO REDUCE AXIAL VARIATIONS IN OPTICAL PROPERTIES

    公开(公告)号:WO2020236445A1

    公开(公告)日:2020-11-26

    申请号:PCT/US2020/032286

    申请日:2020-05-11

    Abstract: A method of manufacturing a tuned optical fiber includes providing a first preform from a set of like preforms each having substantially the same refractive index profile, including amount of axial variation relative to a target refractive index profile. The method includes drawing a reference optical fiber from the first preform and measuring a variation in an optical or physical property as a function of axial position. The method also includes drawing from a second preform from the set of like preforms the tuned optical fiber. The drawing includes using a time-varying tension that reduces the amount of variation of the optical or physical property of interest. The time-varying tension is defined by an amount of axial stress imparted to the tuned fiber needed to alter the refractive index profile and the at least one optical or physical property based on a stress-optic effect.

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