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公开(公告)号：US6151428A
公开(公告)日：2000-11-21
申请号：US965851
申请日：1997-11-07
CPC分类号： G02F1/3515 , G02F2/004 , G02F3/00 , G02F2203/70
摘要： All-optical logic gates in which binary words are encoded using wavelength. A method and apparatus for processing information in this wavelength encoded format is provided. The processing may occur entirely in the optical domain. This approach is modular and enables construction of logic gates using custom wave guide chips that can be mass-produced in a manner similar to that of conventional electronic digital chips. Specific gates, such as AND, OR, EXOR, or NAND, may be "programmed" into a given chip during its fabrication to encode the desired truth table. The output states of the chip are determined by ultrafast mixing of binary encoded wavelengths in a semiconductor optical amplifier. The result is a new wavelength having a relationship to the input wavelengths determined entirely by the desired truth table. The possible clock-rates for these gates can be exceedingly high, such as several hundred Gigabits/second. The product of integer word length "N" and gate clock speed can exceed several Terabits/second and may be as high as the overall optical bandwidth of the system. Complicated multi-input functions may be constructed using this approach and dynamically programmable functions may be built in which either electrical or optical signals reconfigure a set of gates by reprogramming the inverter operations in the chips.
摘要翻译： 使用波长对二进制字进行编码的全光逻辑门。 提供了一种用于处理该波长编码格式的信息的方法和装置。 该处理可以完全在光学域中发生。 这种方法是模块化的，并且可以使用可以以类似于常规电子数字芯片的方式批量生产的定制波导芯片来构建逻辑门。 诸如AND，OR，EXOR或NAND的特定门可以在其制造期间被编程到给定芯片中以对期望的真值表进行编码。 芯片的输出状态通过半导体光放大器中的二进制编码波长的超快混合来确定。 结果是与完全由所需真值表确定的输入波长具有关系的新波长。 这些门的可能的时钟速率可能非常高，例如几百吉比特/秒。 整数字长度“N”和门时钟速度的乘积可以超过几兆比特/秒，并且可能与系统的整体光学带宽一样高。 可以使用该方法构造复杂的多输入功能，并且可以内置动态可编程功能，其中电或光信号通过重新编程芯片中的逆变器操作来重新配置一组门。
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