Cho K Y, Hong U H, Jung S P, Takushima Y, Agata A, Sano T, Horiuchi Y, Suzuki M, Chung Y C
Department of Electrical Engineering, KAIST, 373-1 Guseong-dong, Yuseong-gu, Daejeon 305-701, South Korea.
Opt Express. 2012 Jul 2;20(14):15353-8. doi: 10.1364/OE.20.015353.
We demonstrate a long-reach wavelength-division-multiplexed passive optical network (WDM PON) operating at the symmetric rate of 10.3 Gb/s. For the cost-effectiveness, we realize the upstream transmission by utilizing directly-modulated TO-can packaged reflective semiconductor optical amplifiers (RSOAs) and digital coherent receivers. In addition, to overcome the limited modulation bandwidth of this TO-can packaged RSOA (~2.2 GHz) and operate it at 10.3 Gb/s, we utilize the quadrature phase shift keying (QPSK) format and the electronic phase equalization technique. The result shows that we can extend the maximum reach of the 10.3-Gb/s RSOA-based WDM PON to ~80 km without using any remote amplifiers.
我们展示了一种工作在10.3 Gb/s对称速率下的长距离波分复用无源光网络（WDM PON）。为了实现成本效益，我们通过使用直接调制的TO封装反射半导体光放大器（RSOA）和数字相干接收机来实现上行传输。此外，为了克服这种TO封装RSOA有限的调制带宽（约2.2 GHz）并使其在10.3 Gb/s下运行，我们采用了正交相移键控（QPSK）格式和电子相位均衡技术。结果表明，在不使用任何远程放大器的情况下，我们可以将基于10.3-Gb/s RSOA的WDM PON的最大传输距离扩展到约80 km。
