| 1. | Both of the result calculated from the resonance equation and the transmission matrix are compared and they are approximately equal
将谐振方程确定的谐振峰位置和传输矩阵得到的结果进行了比较，二者是一致的。 |
| 2. | A polarization insensitive lpfg operating at a specific wavelength is achieved by writing the lpfg in a birefringence fiber , for the first time
首次发现了在双折射光纤中写入的长周期光纤光栅存在对偏振不敏感的谐振峰。 |
| 3. | The experimental results show that the amplitude of vibration decreases and the resonance peak moves to higher frequency as the strength of electric field increases
实验表明，随外加电场强度增加，结构振动幅值减小，系统谐振峰向高频方向移动。 |
| 4. | The resonance equation of the sampled fiber bragg gratings is derived through the fourier ' s transform and the coupled - mode theory , which determine the wavelengths of the resonance peaks
摘要利用傅里叶变换和耦合模理论得到了取样布拉格光纤光栅的谐振方程，确定了其多谐振峰的位置。 |
| 5. | The result shows that , the size of the coupling port has strong influence on the external quality factor of the output cavity , while the size of the coupling line and the capacitive metal rods mainly affect the tuning frequency of cutoff waveguide filter
另外，由于耦合接头相当于在截止段中引人了一个附加电感，这使滤波器谐振电路的品质因数变大，谐振峰变窄。 |
| 6. | ( 3 ) . the flattening arithmetic of an edfa was presented based on the inter - correlative function between the gain spectrum function of the edfa and that of the reserve transmission spectrum of the lpfg . for optimal matching between the two spectra , the flattening arithmetic calculates the variation of the resonant amplitude and wavelength of the lpfg
Iii .提出了一种动态增益均衡的平坦算法，这种算法的本质就是利用掺铒光纤放大器增益谱函数和新型长周期光纤光栅的透射谱反转谱函数的相关性，给出新型长周期光纤光栅谐振峰幅度和位置的调节量，使改变后的新型长周期光纤光栅的反转谱线能和edfa的增益输出谱线进行最佳匹配。 |
| 7. | The tunable optical characteristics of the novel lpfgs are recognized during the study of their optical characteristics : ( 1 ) . the relationship between the resonant amplitude and the applied curvature radius in the bend - sensitive orientation of the novel lpfgs is linear , ( 2 ) . the relationship between the resonant amplitude and the applied transverse load in the wavelength - insensitive orientation of the novel lpfgs is linear , ( 3 ) . the relationship between the resonant wavelength shift of the novel lpfgs and the applied temperature is linear
在对新型长周期光纤光栅光学特性的研究中，我们发现了新型长周期光纤光栅的一些独特的可调谐性：新型长周期光纤光栅的谐振峰幅度和弯曲敏感方向所受的弯曲率呈线性关系；新型长周期光纤光栅在波长不敏感方向其谐振峰幅度和它所受的横向压力呈线性关系；长周期光纤光栅的谐振峰中心波长随温度的变化呈线性关系。 |
