All-optical pseudorandom bit sequence generator

Conference on Lasers and Electro-Optics Europe Pub Date : 1998-01-01 DOI:10.1364/cleo_europe.1998.cpd2.2

A. Poustie, K. Blow, R. Manning, A. Kelly

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引用次数: 1

Abstract

The ability to perform all-optical digital information processing is one of the key requirements for future photonic networks. Recently, the use of semiconductor optical amplifier based all-optical interferometric switches [1] has allowed practical demonstrations of advanced functionality to be demonstrated. These have included a bit-serial regenerative optical memory which is capable of long term storage [2] and has the ability to restore the optical logic level [3]. Here we describe a further advance in all-optical digital functionality with a demonstration of an all-optical pseudorandom bit sequence (PRBS) generator. The all-optical PRBS comprises two coupled regenerative memories [2] which act as a time-of-flight shift register for optical pulses. A digital PRBS can be generated by applying the logical XOR function between the output of the register and a tap point and feeding the logical result back into the start of the register [4]. We use two TOAD all-optical switching gates [5] to create the all-optical PRBS architecture. One TOAD is used for the XOR function and the other acts as a wavelength converter and all-optical regenerator. The PRBS output depends on the number of pulses m in the shift register and the tap position n (n

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全光伪随机位序列发生器

能够进行全光数字信息处理是未来光子网络的关键要求之一。最近，使用基于半导体光放大器的全光干涉开关[1]，可以演示先进功能的实际演示。其中包括一个位串行再生光存储器，它能够长期存储[2]，并具有恢复光逻辑电平的能力[3]。在这里，我们通过演示全光伪随机比特序列(PRBS)发生器来描述全光数字功能的进一步发展。全光PRBS包括两个耦合再生存储器[2]，作为光脉冲的飞行时间移位寄存器。数字PRBS可以通过在寄存器的输出和抽头点之间应用逻辑异或函数并将逻辑结果反馈到寄存器的开始处来生成[4]。我们使用两个TOAD全光开关门[5]来创建全光PRBS架构。一个TOAD用于异或功能，另一个作为波长转换器和全光再生器。PRBS输出取决于移位寄存器中的脉冲数m和分接位置n (n

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Conference on Lasers and Electro-Optics Europe

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