Ultra-high speed all-optical shift registers and their applications in OTDM networks
Ultra-high speed all-optical shift registers and their applications in OTDM networks
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DOI：
10.1007/s11082-004-2040-9
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发表时间：
2004-09
影响因子：
3
通讯作者：
K. Zoiros;T. Houbavlis;M. Kalyvas
中科院分区：
文献类型：
--
作者：
K. Zoiros;T. Houbavlis;M. Kalyvas
全光移位寄存器是发展超高速光时分复用网络的基本构件。在本文中，我们回顾了这一前沿技术所取得的进展，重点是利用半导体光放大器（SOA）的干涉配置的有吸引力的功能的实现。我们提出了再生存储与全光循环移位寄存器与逆变器在10 Gb/s使用SOA辅助Sagnac开关和第二SOA提供反馈。我们还展示了一种基于SOA辅助的超快非线性干涉仪的全光存储器，能够阅读/写入20 Gb/s的可变长度的数据包，而无需数据反转。这些寄存器可以在两个非平凡的复杂的增强功能的全光电路的发展中找到应用。首先是一个全光伪随机二进制序列发生器，我们描述了一个有效的设计算法，并提出了监测和验证的方法。第二个是一个全光学误差计数器，我们解决的错误检测和评估问题，使用一种新的采样技术。这些电路是实现高速全光误码率测试仪（BERT）的关键要素，该测试仪有可能超越其电子等效产品，并可能成为电信行业的新产品。
All-optical shift registers are basic building modules for the development of ultra-high speed optical time division multiplexing networks. In this paper, we review the progress that has been made in this cutting-edge technology, focusing on implementations that exploit the attractive features of semiconductor optical amplifier (SOA)-based interferometric configurations. We present regenerative storage performed with an all-optical recirculating shift register with an inverter at 10 Gb/s using a SOA-assisted Sagnac switch and a second SOA to provide feedback. We demonstrate also an all-optical memory based on the SOA-assisted Ultrafast Nonlinear Interferometer capable of reading/writing 20 Gb/s packets of variable length without data inversion. These registers can find application in the development of two nontrivial complex all-optical circuits of enhanced functionality. The first is an all-optical pseudorandom binary sequence generator for which we describe an efficient design algorithm and propose ways for monitoring and verification. The second is an all-optical error counter for which we address the error detection and evaluation issues using a novel sampling technique. These circuits are key elements for the implementation of a high-speed, all-optical bit error rate tester (BERT), which has the potential to outperform its electronic equivalent and constitute a possible new product for the telecommunications industry.