| 可调谐48 nm弯致应变光纤光栅 |
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| 引用本文： | 于小宁,孙成城,张勤. 可调谐48 nm弯致应变光纤光栅[J]. 清华大学学报(自然科学版), 2005, 45(4): 456-457 |
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| 作者姓名： | 于小宁 孙成城 张勤 |
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| 作者单位： | 清华大学,电子工程系,北京,100084 |
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| 摘 要： | 为了满足光纤通信和光纤传感对大范围波长调谐的迫切需要,该文对弯致应变光纤光栅波长调谐的公式进行了推导,给出了解析表达式,并研制了弯致应变光纤光栅波长调谐的实验装置,实现了高达48nm的波长调谐范围。在波长调谐过程中,3dB带宽展宽约为0.1nm;在误差允许范围内,波长调谐的实验值与解析表达式得出的理论曲线相吻合。
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| 关 键 词： | 光纤光栅 弯致应变 波长调谐 |
| 文章编号： | 1000-0054(2005)04-0456-02 |
| 修稿时间： | 2004-04-01 |
Fiber Bragg gratings with bending strain induced wavelength tuning range of 48 nm |
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| YU Xiaoning,SUN Chengcheng,ZHANG Qin. Fiber Bragg gratings with bending strain induced wavelength tuning range of 48 nm[J]. Journal of Tsinghua University(Science and Technology), 2005, 45(4): 456-457 |
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| Authors: | YU Xiaoning SUN Chengcheng ZHANG Qin |
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| Abstract: | Optical communication and optical sensing systems require a wide-range of tunable wavelength filters. Fiber Bragg gratings can be used for such filters by using the bending strain to tune the wavelengths. Equations were derived relating the wavelength tuning of fiber Bragg gratings to the bending strain. Tests showed that a wavelength tuning range of 48 nm could be obtained with a fiber Bragg grating with a broadening of the 3 dB bandwidth of less than 0.1 nm. The experiment wavelength tuning results were also consistent with the theoretical predictions. |
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| Keywords: | fiber Bragg grating bending strain wavelength tuning |
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