Gain-equalizing filters for wavelength division multiplexing optical communication systems: a comparison of notch and long-period grating filters for integrated optoelectronics
Gain-equalizing filters for wavelength division multiplexing optical communication systems: a comparison of notch and long-period grating filters for integrated optoelectronics
复制标题
DOI：
10.1016/s0030-4018(00)00956-1
复制
发表时间：
2000-10
影响因子：
2.4
通讯作者：
C. Chryssou
中科院分区：
文献类型：
--
作者：
C. Chryssou
对光陷波滤波器和长周期光栅（LPG）增益均衡滤波器进行了建模和研究，并以集成光电子学中的光波导放大器为例，对它们的性能进行了比较和分析。该分析基于一个16通道、2.5 Gbs−1、波分复用通信系统，该系统由级联的掺铒碲酸盐光波导放大器组成。碲基放大器被选为放大元件，因为它具有宽的发射带宽（约80 nm），高的发射截面（6.44×10− 25 m2）和高的稀土离子溶解度。放大器模型是基于传播和人口率方程，包括均匀和对诱导的上转换机制。它是通过结合有限元和龙格-库塔算法数值求解。分析预测，LPG滤波器显示出改善的性能相比，陷波滤波器，并结合碲基波导放大器减少有害的增益峰化效应，增加信号的最大传输距离。
Optical notch and long-period grating (LPG) gain-equalizing filters are modeled and studied, and their performances are compared and contrasted for the case of optical waveguide amplifiers for integrated optoelectronics. The analysis is based on a 16-channel, 2.5 Gbs−1, wavelength division multiplexing communication system consisting of cascaded Er3+-doped tellurite optical waveguide amplifiers. A tellurite-based amplifier was chosen as the amplifying element because of its broad emission bandwidth (∼80 nm), its high emission cross-section (6.44×10−25m2) and its high rare-earth ion solubility. The amplifier model is based on propagation and population-rate equations and includes both uniform and pair-induced up-conversion mechanisms. It is solved numerically by combining finite elements and a Runge–Kutta algorithm. The analysis predicts that LPG filters show improved performance compared to notch filters, and combined with tellurite-based waveguide amplifiers reduce the deleterious gain peaking effect increasing the signal maximum transmission distance.