Abstract
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 language | English |
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| Pages (from-to) | 26565-26574 |
| Number of pages | 10 |
| Journal | Optics Express |
| Volume | 24 |
| Issue number | 23 |
| DOIs | |
| Publication status | Published - 2016 Nov 14 |