Acta Optica Sinica, Volume. 39, Issue 4, 0406001(2019)
Preparation of Wide-Band Gap Ge-Se Chalcohalide Glass and Its Fiber Properties
There is an active demand for infrared chalcohalide glass fiber with ultra-low zero-dispersion point. Here, two series of Ge-Se based chalcohalide glasses are selected to compare in the research. For the aim of fiber drawing, an optimized glass composition is selected after comparing the characteristics of each composition. The results show that with the increase of the molar fraction of iodine from 5% to 40%, the infrared transmittance of glasses is significantly improved, the cut-off wavelength of near-infrared absorption appears blue-shift, the optical band gap increases gradually, the refractive index decreases, and the zero-dispersion wavelength is blue-shifted. The glass transition temperature decrease and the expansion coefficient increases gradually. The fiber loss is measured by cut-back method in the spectral range of 2.5-11.5 μm, and the minimum optical loss at 5.9 μm is about 16.9 dB/m.
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Xiange Wang, Kai Jiao, Peng Chen, Zugang Xue, Youmei Tian, Nian Si, Zheming Zhao, Xunsi Wang, Shixun Dai, Qiuhua Nie. Preparation of Wide-Band Gap Ge-Se Chalcohalide Glass and Its Fiber Properties[J]. Acta Optica Sinica, 2019, 39(4): 0406001
Category: Fiber Optics and Optical Communications
Received: Oct. 9, 2018
Accepted: Dec. 4, 2018
Published Online: May. 10, 2019
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