| Wavelength switching in a mixed structure of a long-period and a Bragg fiber gratings |
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| 作者姓名： | 林志南 江衍伟 杨志忠 |
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| 作者单位： | Graduate Institute of Communication Engineering，Graduate Institute of Electro-Optical Engineering and Department of Electrical Engineering，National Taiwan University，1，Roosevelt Road，Section 4，Taipei，Graduate Institute of Communication Engineering，Graduate Institute of Electro-Optical Engineering and Department of Electrical Engineering，National Taiwan University，1，Roosevelt Road，Section 4，Taipei，Graduate Institute of Communication Engineering，Graduate Institute of Electro-Optical Engineering and Department of Electrical Engineering，National Taiwan University，1，Roosevelt Road，Section 4，Taipei |
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| 摘 要： | We built a numerical model for evaluating the coupling processes of a mixed structure of a Bragg fiber grat-ing and a long-period grating. From the numerical results, we not only confirmed the wavelength switchingphenomena observed in previously reported experiments, but also discovered a new coupling mechanism,which generated the reflection of a signal with its wavelength longer than the Bragg wavelength. Thedependencies of the wavelength switching behaviors on various parameters of the mixed grating structure
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Wavelength switching in a mixed structure of a long-period and a Bragg fiber gratings |
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| Abstract: | We built a numerical model for evaluating the coupling processes of a mixed structure of a Bragg fiber grating and a long-period grating. From the numerical results, we not only confirmed the wavelength switching phenomena observed in previously reported experiments, but also discovered a new coupling mechanism, which generated the reflection of a signal with its wavelength longer than the Bragg wavelength. The dependencies of the wavelength switching behaviors on various parameters of the mixed grating structure were demonstrated. Such results should be useful for optimizing the design of such a potentially useful fiber component. |
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