日本电报电话公司已把10 Gb/s的孤子信号在光纤上传输1000 000 km,该信号在510km长的光纤回路上约来回传送2000次,回路上每隔50 km设一掺饵光纤放大器。公司传输系统实验室M.Nakazwa等人发展的主要技术是用电光调制器使脉冲同步成形和重新调整脉冲时间。脉冲时时抖动,使贝尔实验室早期孤子实验在2.5Gb/s速率下仅传输了11000 km。然而,该室孤子先驱者L.Mollenauer并没有考虑到主动脉冲清除电路是实用通信的正确途径。他说,“我们为消除传输路线中的干扰已进行艰 Nippon Telegraph and Telephone has transmitted 10 Gb / s of soliton signals over 1000 km of fiber, which is transmitted back and forth approximately 2,000 times over a 510 km long fiber loop and an additional bait fiber amplifier every 50 km on the loop. The main technology developed by M. Nakazwa et al. In the company’s transmission system laboratory is the use of an electro-optic modulator to synchronize the pulse shaping and readjustment of the pulse time. Burst jitter from time to time allowed Bell Labs early soliton experiments to transmit only 11,000 km at 2.5Gb / s. However, L. Mollenauer, a soliton pioneer in the room, did not consider that the active pulse clean-up circuit is the right way to get started. He said, ”We have already struggled to eliminate the interference in the transmission route