High Speed Tunable Filter for All-Optical WDM Networks

9362048 Liu由于掺铒光纤放大器（EDFA）的发现，在电信网络中使用优化为1550 nm的光纤作为增加容量、提供更长的通信链路和系统经济的方法越来越受到青睐。出于类似的原因，1550nm系统也被考虑用于新的本地交换网络，旨在为高速计算机网络增加路由多样性。利用这些全光网络，可以避免使用时域划分的电子速度瓶颈。由于掺铒光纤放大器（EDFA）在1550 nm处的带宽或信息承载能力约为30 nm，因此波分复用可以在该带宽内容纳150、0.1 nm的通道（通道数= finesse/2）。为了利用这种EDFA容量，需要一种廉价、高速、宽范围可调的光学滤波器。我们提出了一种光可调谐滤波器，以最佳地利用光子网络中的波分复用，具有高吞吐量，大调谐范围，高分辨率和高调制速度。＊＊＊

9362048 Liu Because of the discovery of Er-doped fiber amplifier (EDFA), the use of optical fibers optimized for 1550 nm in telecommunication networks is gaining favor as a method of adding capacity, providing longer communication links and system economy. For similar reasons 1550 nm systems also are being considered for new local exchange networks intended to add routing diversity to high-speed computer networks. With these all-optical networks, the soon to be reached electronics speed bottleneck which uses time-domain partitioning can be avoided. Since the bandwidth, or the information carrying capacity of Er-doped fiber amplifier (EDFA) is about 30 nm at 1550 nm, wavelength-division multiplexing can fit 150, 0.1 nm channels within this bandwidth (number of channels = finesse/2). To take advantage of this EDFA capacity, there is a need for an inexpensive, high speed, wide range tunable optical filter. We propose an optical tunable filter for optimally taking advantage of wavelength-division multiplexing in the photonic-network which has high throughput, large tuning range, high resolution, and high modulation speed. ***