论文部分内容阅读
提出一种基于长周期波导光栅的宽带集成Er-Yb掺杂磷酸盐玻璃集成波导放大器,其中增益平坦光栅滤波器直接刻蚀在有源波导上。放大器模型建立在考虑了上转换之后的传输与速率方程基础上,利用重叠积分与龙格-库塔相结合的方法进行求解。放大器的本征增益谱通过求解重叠积分龙格-库塔方程得到,放大器的有害增益峰由长周期波导光栅滤波器来消除。讨论了长周期波导光栅透射谱对放大器增益平坦的影响。数值计算结果表明,在1532～1565nm范围内,放大器的平均增益约为20dB,增益抖动小于3dB。研究结果表明,该结构可有效地消除本征增益谱中的峰值增益,提高放大器的增益平坦带宽。
A wideband integrated Er-Yb doped phosphate glass integrated waveguide amplifier based on a long period waveguide grating is proposed, in which a gain-flattened grating filter is directly etched on the active waveguide. The amplifier model is established on the basis of the transmission and rate equations after the upconversion, and is solved by the method of overlap integral and Runge-Kutta combination. The amplifier’s intrinsic gain spectrum is obtained by solving the overlapping integral Runge-Kutta equation and the amplifier’s unwanted gain peaks are eliminated by the long-period waveguide grating filter. The effect of long period waveguide grating transmission spectrum on amplifier gain flatness is discussed. The numerical results show that the average gain of the amplifier is about 20dB and the gain jitter is less than 3dB in the range of 1532 ~ 1565nm. The results show that this structure can effectively eliminate the peak gain in the intrinsic gain spectrum and increase the gain flat bandwidth of the amplifier.