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摘要：
We demonstrate all-fiber LP01-LP11 mode conversion by inscribing a long-period grating in a negative curvature hollow-core optical fiber using a CO , laser. Over 90% conversion efficiency is achieved with insertion loss of similar to 0.5 dB. (C) 2020 The Author(s)
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来源 ：
2020 ASIA COMMUNICATIONS AND PHOTONICS CONFERENCE (ACP) AND INTERNATIONAL CONFERENCE ON INFORMATION PHOTONICS AND OPTICAL COMMUNICATIONS (IPOC)
年份： 2020
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