Nonlinear Fiber-Optics with Picosecond Pulses for all-Optical WDM/TDM Systems

我们建议建立一个高速缓存存储缓冲区的基础上，参数放大，将能够在Gb/s的范围内工作，允许存储的数据kbits。 我们将进行实验来探索阅读、写入和擦除存储的数据模式的各种方法。 我们的工作表明，超快参量非线性既可以用来提供宽带可调增益，也可以用来进行动态增益调制。 我们建议将两者联合收割机结合起来演示一个光学锁相环，它在原理上可以非常快，因为它依赖于克尔非线性的相位鉴别。 这样的锁相环也将是波长可调的，这是一个非常重要的特征，因为它将波长转换的功能添加到标准的3R全光再生器。 在进行上述实验研究的同时，我们还将开发各种光学系统的数值模型。 这将提供一个设计工具，以确定参数值，允许实验装置的最有效的操作。 我们以前已经证明了亚皮秒脉冲在光纤线路中稳定传播的可能性，其中共轭增益用于补偿线性损耗。 我们建议组装一个再循环回路实验中，线性损失将由一对非退化的参数（共轭）放大器补偿。 两个放大器的位置将根据进一步的理论/数值结果来选择。 我们将通过各种信号和噪声测量，从实验和理论上研究亚皮秒脉冲的稳定性，并将实验结果直接与数值模拟进行比较。 拟议的实验将在1550和1300 nm波长区域进行，以证明参量放大的宽带能力。

We propose to build a cache storage buffer based upon parametric amplification that will be capable of operating in the Gb/s range, permitting kbits of data to be stored. We will carry out experiments to explore various ways of reading, writing, and erasing the stored data patterns. Our work has shown that the ultrafast parametric nonlinearity can be exploited either to provide broad-band tunable gain or dynamic gain modulation for clock-recovery. We propose to combine the two to demonstrate an optical phase-lock loop, which in principle can be extremely fast as it relies on the Kerr nonlinearity for envelope-phase discrimination. Such a phase-lock loop will also be wavelength tunable-a feature that is quite important as it adds the function of wavelength conversion to the standard 3R all-optical regenerator. Simultaneous to the above experimental studies we will also develop numerical models of the various optical systems. This will provide a design tool to determine the parameter values allowing the most efficient operation of the experimental setups. We have previously demonstrated the possibility of stably propagating sub-picosecond pulses in fiber lines in which conjugating gain is used to compensate the linear loss. We propose to assemble a re-circulating loop experiment in which linear loss will be compensated by a pair of non-degenerate parametric (conjugating) amplifiers. The location of the two amplifiers will be chosen based upon further theoretical/numerical results. We will experimentally and theoretically study the stability properties of the sub-picosecond pulses by making various signal and noise measurements, and will compare the experimental results directly with numerical simulations. The proposed experiments will be performed in both the 1550 and 1300 nm wavelength regions in order to demonstrate the wideband capability of parametric amplification.