Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4957085 | Optical Fiber Technology | 2017 | 5 Pages |
Abstract
Effect of controlling recrystallization from the melt (1000 °C) on the residual stress and structural properties of a Ge core fiber via molten core drawing (MCD) method is investigated. Ge core fibers is investigated using Raman spectroscopy, scanning electron microscope (SEM), and X-ray diffraction (XRD). Compared with the as-drawn Ge fiber, the Raman peak of the recrystallized Ge fiber shift from 300 cmâ1 to 300.6 cmâ1 and full width at half maximum (FWHM) decreased from 5.36 cmâ1 to 4.48 cmâ1. The Ge crystal grains which sizes are of 200-600 nm were formed during the process of recrystallization; the XRD peak of (1 1 1) plane is observed after recrystallization. These results show that controlling recrystallization allows the release of the thermal stress, and improvement of the crystal quality of Ge core.
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Authors
Ziwen Zhao, Xueli Cheng, Ting He, Fei Xue, Wei Zhang, Na Chen, Jianxiang Wen, Xianglong Zeng, Tingyun Wang,