| The relationship between IR characteristic peak and microstructure of the glass used as optical fiber |
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| 作者姓名： | 段吉安 蔡国华 帅词俊 |
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| 作者单位： | School of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China |
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| 摘 要： | Based on the harmonic vibration equation, the relationship between IR characteristic peak of fiberglass and Si-O-Si bond angle was deduced, and 1 100 cm^-1 characteristic peak was specifically studied. It is found that 1 100 cm^-1 characteristic peak shifts to higher wave number when Si-O-Si bond angle increases. Taking fused biconical taper （FBT） coupler as an example, the microstructures of the fiber coupler manufactured at different draw- ing speeds were tested with micro infrared spectrum. According to the test results, it is found that the bond angle at the taper region is the largest, the one at the fused region is the second largest, and the one of bare fiber is the smal- lest. The characteristic peaks of fused-taper region shift to higher wave number when drawing speed increases.
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| 关 键 词： | 玻璃纤维 红外光谱 显微结构 光纤 |
| 文章编号： | 1005-9784（2006）03-0238-04 |
| 收稿时间： | 2005-10-20 |
| 修稿时间： | 2005-11-22 |
The relationship between IR characteristic peak and microstructure of the glass used as optical fiber |
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| Duan Ji-an , Cai Guo-hua and Shuai Ci-jun.The relationship between IR characteristic peak and microstructure of the glass used as optical fiber[J].Journal of Central South University of Technology,2006,13(3):238-241. |
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| Authors: | Duan Ji-an Cai Guo-hua and Shuai Ci-jun |
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| Affiliation: | (1) School of Mechanical and Electrical Engineering, Central South University, 410083 Changsha, China |
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| Abstract: | Based on the harmonic vibration equation, the relationship between IR characteristic peak of fiberglass and Si-O-Si bond angle
was deduced, and 1 100 cm−1 characteristic peak was specifically studied. It is found that 1 100 cm−1 characteristic peak shifts to higher wave number when Si-O-Si bond angle increases. Taking fused biconical taper (FBT) coupler
as an example, the microstructures of the fiber coupler manufactured at different drawing speeds were tested with micro infrared
spectrum. According to the test results, it is found that the bond angle at the taper region is the largest, the one at the
fused region is the second largest, and the one of bare fiber is the smallest. The characteristic peaks of fused—taper region
shift to higher wave number when drawing speed increases.
Foundation item: Project (50235040) supported by the National Natural Science Foundation of China; project (NCET-040753) supported by the
New Century Excellent Talents in University; project (20050533037) supported by the research fund for the Doctoral Program
of Higher Education |
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| Keywords: | fiberglass IR spectroscopic microstructure |
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