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    • 9. 发明申请
    • All-optical signal regeneration
    • 全光信号再生
    • US20050244162A1
    • 2005-11-03
    • US10837854
    • 2004-05-03
    • Alan EvansDmitri Kuksenkov
    • Alan EvansDmitri Kuksenkov
    • H04B10/02H04B10/17H04J14/02H04J14/08
    • H04B10/299H04J14/0227H04J14/0241
    • An all-optical method of regenerating an optical return-to-zero format pulse signal of a first wavelength starts by introducing the input signal into a first end of a non-linear optical fiber to obtain a modified signal comprising pulses broadened in the wavelength domain. When this modified signal emerges from the second end of said non-linear optical fiber, a bandwidth slice is selected that is centered on a second wavelength so spaced from the first wavelength that its intensity is substantially unresponsive to weak pulses in the signal and relatively insensitive to intensity for other pulses. This slice is returned to the same non-linear optical fiber at its second end so that a further modified signal comprising pulses broadened in the wavelength domain will emerge from its first end. From this further modified signal a bandwidth slice centered on the first wavelength is selected as regenerated output. Regenerators operating in this way are also disclosed.
    • 通过将输入信号引入非线性光纤的第一端来重新生成第一波长的光返回到零格式的脉冲信号的全光学方法,以获得包括波长范围扩大的脉冲的修改信号 。 当该修改的信号从所述非线性光纤的第二端出现时,选择以与第一波长间隔的第二波长为中心的带宽片,其强度对信号中的弱脉冲基本上不响应,并且相对不敏感 到其他脉冲的强度。 该片在其第二端返回到相同的非线性光纤,使得包括在波长域中扩展的脉冲的另外修改的信号将从其第一端出现。 从该进一步修改的信号中选择以第一波长为中心的带宽切片作为再生输出。 还公开了以这种方式操作的再生器。
    • 10. 发明申请
    • Secure digital communication
    • 安全的数字通讯
    • US20050135612A1
    • 2005-06-23
    • US10741212
    • 2003-12-19
    • Alan Evans
    • Alan Evans
    • H04K1/10H04L9/00
    • H04K1/10
    • A secure digital data transmission technique in which a transmitter and a receiver, are connected by two or more transmission channels, preferably carried on separate optical fibers. The transmitter includes a switch operable to divide a datastream to be transmitted into segments each comprising from a few tens to a few thousand data bits and allocating adjacent said segments always to different said transmission channels. Delays may be introduced so that the divided datastreams arrive at the receiver in correct temporal relation, or the separate received datastreams may be stored and interleaved subsequently. The switch may operate periodically or according to a key. Gaps are preferably infilled with random or unrelated data.
    • 一种安全的数字数据传输技术,其中发送器和接收器通过两个或更多个传输通道连接,优选地在单独的光纤上承载。 发射机包括可操作以将要发射的数据流划分成包括从几十到几千个数据比特的段的开关,并且将相邻的所述段总是分配给不同的所述传输信道。 可以引入延迟,使得划分的数据流以正确的时间关系到达接收机,或者可以随后存储和交织单独的接收的数据流。 交换机可以周期性地或根据密钥进行操作。 间隙优选地填充有随机或不相关的数据。