Differential Optical Channels

光通信系统发射机、信道、放大器和接收机中的串扰和噪声限制了系统性能和可靠性。光电数据系统公司，研究了差分信令通过对信道非理想性进行预补偿来缓解这些问题的可行性。第一个目标是分析和模拟差分信号在光纤通信、光放大器、光存储器和光交叉开关中的好处。其优点包括更长的带宽距离产品、更高的信道密度、更低的开关能量、更低的BER和更长的MTBF。此外，他们还进行了两个实验，展示了潜在的好处，并验证了他们的理论预测：一个是集成差分光电检测器/放大器;另一个是半导体光放大器。

Crosstalk and noise in optical communications system transmitters, channels, amplifiers and receivers limit system performance and reliability. Optoelectronic Data Systems, Inc., investigates the feasibility of differential signaling to alleviate these problems by pre-compensating for channel non-idealities. The first objective is to analyze and simulate the benefits of differential signaling in fiber-optic telecommunications, optical amplifiers, optical memories and optical crossbar switches. The benefits include longer bandwidth-distance products, higher channel density, lower switching energy, lower BER, and longer MTBF. In addition, they perform two experiments that demonstrate the potential benefits and validate their theoretical predictions: one on integrated differential optoelectronic detector/amplifiers; the other on semiconductor optical amplifiers.