Mid-infrared hollow fiber couplers

Masanori Kato; Yuji Matsuura; Yusuke Oshima; Takashi Katagiri

doi:10.1117/12.2615546

7 March 2022 Mid-infrared hollow fiber couplers

Masanori Kato, Yuji Matsuura, Yusuke Oshima, Takashi Katagiri

Proceedings Volume PC11953, Optical Fibers and Sensors for Medical Diagnostics, Treatment and Environmental Applications XXII; PC119530B (2022) https://doi.org/10.1117/12.2615546
Event: SPIE BiOS, 2022, San Francisco, California, United States

Abstract

Fiber couplers based on hollow metallic fibers were designed and fabricated to branch and combine mid-infrared laser light with low loss. The fiber coupler was fabricated by side-polishing and bonding two hollow metallic fibers bent at an arbitrary curvature. The branching ratio is precisely aligned by the position shift amount of the two fibers in the optical axis direction. The fabricated coupler showed a branching ratio of 0 - 50% and an excess loss of less than 1 dB.

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Citation Download Citation

Masanori Kato, Yuji Matsuura, Yusuke Oshima, and Takashi Katagiri "Mid-infrared hollow fiber couplers", Proc. SPIE PC11953, Optical Fibers and Sensors for Medical Diagnostics, Treatment and Environmental Applications XXII, PC119530B (7 March 2022); https://doi.org/10.1117/12.2615546

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KEYWORDS

Fiber couplers

Mid-IR

Fiber lasers

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