Wavelength Interrogator Based on Arrayed Waveguide Gratings

被引：1
|
作者：
Liu, Zhiming [1 ]
Li, Jian [2 ]
机构：
[1] Beijing Jiaotong Univ, Inst lightwave technol, Beijing 100044, Peoples R China
[2] China Acad Railway Sci, Signal & Commun Res Inst, Beijing 100081, Peoples R China
来源：
2010 2ND INTERNATIONAL ASIA CONFERENCE ON INFORMATICS IN CONTROL, AUTOMATION AND ROBOTICS (CAR 2010), VOL 3 | 2010年
基金：
国家高技术研究发展计划(863计划); 中国国家自然科学基金; 北京市自然科学基金;
关键词：
arrayed waveguide grating; fiber Bragg grating; wavelength detection;
D O I：
10.1109/CAR.2010.5456701
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
A novel wavelength interrogator that employs an arrayed waveguide grating (AWG) is proposed and its operating features are investigated in detail theoretically. Wavelength detection can be easily achieved by using traditional means of detecting light intensity of AWG's output signal in this method. An explicit formula based on the Gaussian approximation is given and used to model the characteristics of the proposed interrogator. The result shows that: the wavelength signal to be detected can be linearly described by the logarithm of adjacent channels' power ratio; the wavelength detection sensitivity can be improved by decreasing channel spacing or 3dB bandwidth of AWG. This method is not sensitive to the insertion loss ripple of AWG.
引用
收藏
页码：335 / 338
页数：4
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