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    • 8. 发明授权
    • Apparatus and method for realizing all-optical NOR logic device
    • 用于实现全光NOR逻辑器件的装置和方法
    • US06424438B1
    • 2002-07-23
    • US09714215
    • 2000-11-17
    • Young Tae ByunSang Hyuck KimDeok Ha WooSeok LeeDong Hwan KimSun Ho Kim
    • Young Tae ByunSang Hyuck KimDeok Ha WooSeok LeeDong Hwan KimSun Ho Kim
    • G02F300
    • G02F3/00G02F2203/70Y10S359/90
    • An apparatus and method for realizing an all-optical NOR logic device includes a distributed feedback laser diode and a tunable laser diode respectively generating two pump signals of different wavelengths. The apparatus also includes a pulse generator and a Mach-Zehnder modulator modulating the pump signals. The apparatus also includes a delay line adapted to delay a pump signal that has been split from the modulated pump signals and that travels along one optical path, and a polarization controller and an optical attenuator adapted to control another pump signal that has been split from the modulated pump signals and that travels along another optical path, to have the same polarization and intensity as those of the pump signal passing through the delay line. An Er-doped amplifier amplifies the sum of the pump signals so that the amplified pump signal sum saturates a semiconductor optical amplifier. The semiconductor optical amplifier exhibits gain saturation and wavelength conversion characteristics in response to an output signal from the Er-doped fiber amplifier and a probe signal passing therethrough. A plurality of 50:50 fiber couplers are coupled to respective output ends of the laser diodes, the Mach-Zehnder modulator, the attenuator, and the Er-doped fiber amplifier in order to conduct coupling and splitting operations for the pump signals.
    • 用于实现全光NOR逻辑器件的装置和方法包括分布反馈激光二极管和可调激光二极管,分别产生不同波长的两个泵浦信号。 该装置还包括脉冲发生器和调制泵浦信号的马赫 - 曾德调制器。 该装置还包括延迟线,其适于延迟已经从调制的泵浦信号分离并且沿着一条光路行进的泵浦信号,以及偏振控制器和光衰减器,其适于控制已经从 调制的泵浦信号并且沿着另一个光路行进,以具有与通过延迟线的泵浦信号相同的极化和强度。 掺铒放大器放大泵浦信号的和,使得放大的泵浦信号与半导体光放大器饱和。 半导体光放大器响应于来自掺铒光纤放大器的输出信号和通过其的探测信号,表现出增益饱和度和波长转换特性。 多个50:50光纤耦合器耦合到激光二极管,马赫 - 曾德尔调制器,衰减器和掺铒光纤放大器的相应输出端,以便对泵浦信号进行耦合和分离操作。