Finite Impulse Response Filter Using 4-Port MMI Couplers for Residual Dispersion Compensation
Finite Impulse Response Filter Using 4-Port MMI Couplers for Residual Dispersion Compensation
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DOI：
10.1109/jlt.2012.2185038
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发表时间：
2012-04
影响因子：
4.7
通讯作者：
Abdul Rahim;S. Schwarz;J. Bruns;Karsten Voigt;D. Kroushkov;M. T. Arnous;Christian G. Schaffer
中科院分区：
文献类型：
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作者：
Abdul Rahim;S. Schwarz;J. Bruns;Karsten Voigt;D. Kroushkov;M. T. Arnous;Christian G. Schaffer
在集成光子学中，利用2×2耦合器实现了许多用于信号处理应用的光有限脉冲响应滤波器。我们已经实现了一个使用4× 4耦合器的滤波器。这种滤波器用于补偿光纤传输系统中的剩余色散。利用4 μm绝缘体上硅技术的4端口多模干涉耦合器在100 GHz自由频谱范围内实现了硅光子学。对该装置的传输时延和群时延进行了测量，仿真结果与实验结果吻合较好。所提出的滤波器可以补偿高达±176 ps/nm的光纤色散。
Many implementations of optical finite impulse response filter for signal processing applications have been realized in integrated photonics using 2×2 couplers. We have implemented a filter using 4× 4 couplers. Such a filter is useful for the compensation of residual dispersion in a fiber optic transmission system. Silicon photonics realization using 4-port multimode interference couplers in 4 μm silicon-on-insulator technology has been carried out for a free spectral range of 100 GHz. The transmission and group delay for the fabricated device have been measured and a good agreement between the simulation and experimental results has been achieved. The proposed filter can compensate up to ±176 ps/nm of fiber chromatic dispersion.