High Extinction-Ratio and Near-Zero Dispersion Chalcogenide Polarization Maintaining Photonic Crystal Fibers in Mid-Infrared
Journal of Lightwave Technology(2024)
摘要
In this paper, we report the preparation and properties of a novel chalcogenide photonic crystal fiber with a high extinction ratio (ER). The Ge
10
As
22
Se
68
preform was fabricated using the computerized numerical control precision drilling method. The drawn fiber has a minimum loss of 0.63 dB/m @ 6 μm, near-zero dispersion in the MIR, and 10
-3
birefringence @ 4 μm. The ER of the fiber averaged -17.11 dB. The fibers with low-loss, near-zero flat dispersion, high birefringence, and high ER are considered suitable for MIR-OCT.
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关键词
Birefringence,Chalcogenide glass,Dispersion,Extinction ratio,Mid-Infrared,Optical coherence tomography,Photonic crystal fiber,Polarization-maintaining
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