Multi-element hollow-core anti-resonant fiber for infrared thermal imaging

Takuya Kobayashi, Takashi Katagiri, Yuji Matsuura

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)


A bundle composed of 245 anti-resonant glass hollow optical fibers with a total diameter of 1 mm and fiber core diameter of 60 μm is fabricated for endoscopic infraredthermal imaging. The bundle fiber shows low losses in the wavelength range of 3 to 4 μm owing to the anti-resonant effect of the thin glass wall. An image resolution of around 420 μm with a field-of-view of 3-mm diameter is obtained although crosstalk between adjacent fibers is observed. The experimental results of an imaging system using the fiber bundle with a halfball lens at the distal end, which can be inserted into a working channel of endoscopes, are also shown.

Original languageEnglish
Pages (from-to)26565-26574
Number of pages10
JournalOptics Express
Issue number23
Publication statusPublished - 2016 Nov 14


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