Merrill Lynch公司2001年3月公布的一份报告显示，光网络行业现在遇到了“市场低迷期”。一段时间以来，整个市场没有什么增长，即使有，增幅也很小。目前的光纤“市场低迷期”始于今年年初。当时，市场热点未能如人们预期的那样，从骨干传输网络立刻转为城域网(MAN)。另外，专 A report released by Merrill Lynch in March 2001 shows that the optical network industry is now experiencing a “market downturn.” There has been no growth in the entire market for some time, and if anything, the increase is small. The current fiber “market downturn” began early this year. At that time, market hotspots failed to move from backbone transport networks to metropolitan area networks (MANs) as expected. In addition, special