All-solid mid-infrared chalcogenide photonic crystal fiber with ultralarge mode area

All-solid mid-infrared chalcogenide photonic crystal fiber with ultralarge mode area

In this Letter, we report, to the best of our knowledge, the largest effective single-mode mid-infrared chalcogenide (ChG) fiber. Two thermally matched ChG glasses with a large index contrast of ∼0.35 are chosen for constructing all-solid photonic crystal fiber (PCF) with two rings of "holey&qu...

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Veröffentlicht in:Optics letters 2019-11, Vol.44 (22), p.5553-5556
Hauptverfasser: Ren, He, Qi, Sisheng, Hu, Yongsheng, Han, Feng, Shi, Jindan, Feng, Xian, Yang, Zhiyong
Format: Artikel
Sprache:eng
Schlagworte:
Broadband
Chalcogenides
Crystal fibers
Diameters
Numerical aperture
Photonic crystals
Single mode operation
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Zusammenfassung:In this Letter, we report, to the best of our knowledge, the largest effective single-mode mid-infrared chalcogenide (ChG) fiber. Two thermally matched ChG glasses with a large index contrast of ∼0.35 are chosen for constructing all-solid photonic crystal fiber (PCF) with two rings of "holey" microstructured cladding. Single-mode operation is confirmed in the fabricated ChG PCF with a core diameter of 91.2 μm, from both near-field and far-field observation at 4 μm. Ultralow numerical aperture of
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.44.005553