arXiv 1104.49472011-04-26physics.optics

基于Mach-Zehnder干涉仪的全光纤非对称交织器的研究

Study of All-Fiber Asymmetric Interleaver Based on Mach-Zehnder Interferometer

Lu Huaiwei, Wei Yun, Zhang Baoge, Wu Kaijun, Luo Guanwei

摘要：

为了提高10 Gb/s+40 Gb/s光纤通信系统的传输效率，提出并讨论了一种基于两级级联马赫-曾德尔干涉仪（MZI）的不等通带全光纤交织器。选择了耦合器分光比和干涉仪臂长差等结构参数的最佳值。实验结果和理论分析表明，在40 Gb/s和10 Gb/s的传输速率下，可以获得通带大于60 GHz和30 GHz的奇、偶信道通带宽度为-3dB的全光纤光交错复用器，通过将不同的频谱部分分配给10 Gb/s和40 Gb/s信道，减轻了40 Gb/s信道的带宽效率要求，因此可以实现更长的传输距离。与传统的非对称交织器相比，所提出的交织器的最明显的优点是全光纤结构。

英文摘要：

In order to improve the transmission efficiency of optical-fiber communication system with 10Gb/s+40Gb/s, an all-fiber interleaver with unequal passband is proposed and discussed, which is based on a two-stage cascaded Mach-Zehnder interferometer (MZI). The optimum value of structural parameters, such as splitting ratios of the couplers and the physical length differences of the interferometer arms, were chosen. One set of optimized data is validated in the experimental result.The experimental results and the theoretic analysis indicate that an all-fiber optical interleaver with -3dB passband width in odd channels and even channels could be obtained, which having more than 60GHz passband and 30GHz passband, for transmission speed of 40Gb/s and 10Gb/s, respectively.By assigning different portions of spectrum to the 10Gb/s and the 40 Gb/s channels, the bandwidth efficiency requirement of the 40 Gb/s channel is relieved, and therefore longer transmission distance can be achieved.Comparing with the conventional asymmetric interleaver, the most obvious benefit of the proposed interleaver is all-fiber structure.

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摘要：

英文摘要：

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