期刊
OPTICS AND LASER TECHNOLOGY
卷 51, 期 -, 页码 77-81出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.optlastec.2013.04.002
关键词
Fiber bragg grating; Arrayed waveguide grating; Temperature compensation
资金
- National Natural Science Foundation of China [61177078, 60877049]
- Specialized Research Fund for the Doctoral Program of Higher Education of China [20101201120001]
As the output characteristics of arrayed waveguide grating (AWG) can be affected by temPerature, the output spectrum central wavelength Ai of every channel has a tendency to drift with the temperature. To improve demodulation accuracy, this paper presents a type of AWG demodulation algorithm with temperature compensation. This algorithm assumes that under the same environment, with similarly changing temperatures of AWG and fiber Bragg grating (FBG), the AWG central wavelength is replaced with the expression that includes AT, and the values of AWG and of FBG which change with the temperature (AT) are integrated. The experiment result shows that when temperature compensation is added in the demodulation technique, the correlation coefficient r of the demodulation result is 0.997, which means that the curve has good consistency and can be measured repeatedly. This also proves the rightness of the technique. The application. of this technique for smart clothing is mentioned, which indicates its feasibility. (C) 2013 Elsevier Ltd. All rights reserved.
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