Gutierrez-Castrejon Ramon, Dolores-Calzadilla Victor, Duelk Marcus
Institute of Engineering, Universidad Nacional Autónoma de México, Cd. Universitaria, Coyoacán 04510 Mexico, D.F., Mexico.
Appl Opt. 2009 Sep 1;48(25):F82-9. doi: 10.1364/AO.48.000F82.
A numerical investigation of the performance of an automatic gain-controlled semiconductor optical preamplified receiver for a 4 x 25 Gbits/s wavelength division multiplexing transmission system with a 0-40 km reach is presented. We show that the control scheme acting on the semiconductor optical amplifier (SOA) gain increases the input power dynamic range of the optical receiver, thus allowing the transmission system to operate error free regardless of fiber length. In contrast, a fixed-gain optical receiver shows poor performance that is due to SOA nonlinearity and photodiode overload, which are well captured by the corresponding simulation models. The device represents a practical alternative to the next-generation high-speed Ethernet technology.
本文给出了对一种自动增益控制的半导体光前置放大接收机性能的数值研究，该接收机用于一个传输距离为0至40千米的4×25 Gbit/s波分复用传输系统。我们表明，作用于半导体光放大器（SOA）增益的控制方案增加了光接收机的输入功率动态范围，从而使传输系统无论光纤长度如何都能无差错运行。相比之下，固定增益光接收机表现不佳，这是由SOA非线性和光电二极管过载导致的，相应的仿真模型能很好地捕捉到这些情况。该器件是下一代高速以太网技术的一种实用替代方案。
