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Syoryu Cho

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Proceedings Article | 23 August 2021 Paper

The study of a phase difference defect inspection technology

Tosyo Cho, Sui Ryu, Syoryu Cho

Proceedings Volume 11908, 119080K (2021) https://doi.org/10.1117/12.2595839

KEYWORDS: Glasses, Defect detection, Microscopy, Light scattering, Scattering, Photomasks, Inspection

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In this paper, we present results of long-term stability tests of a low-loss (<0.55 dB) hollow core fiber (HCF) to standard optical fiber interconnection prepared by modified gluing-based fiber-array technology. We measured insertion loss of three interconnected HCF samples over a period of 100 days at room temperature, observing a variation in insertion loss of less than 0.02 dB. Subsequently, we placed the HCF samples in a climatic chamber and heated to +85◦C in four cycles. Maximum insertion loss variation of 0.10 dB was observed for HCF samples with angled 8◦ interconnections and only 0.02 dB for a HCF sample with a flat interconnection.

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