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New control algorithm for automatic PMD compensation system |
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| Authors: | Jinnan Zhang Yue Gu Xueguang Yuan Feng Tian Xiaoguang Zhang and Jinjing Tao |
| Institution: | 1,2 1 Institute of Information Photonics and Optical Communications,Beijing University of Posts and Telecommunications, Beijing 100876,China 2 State Key Laboratory of Information Photonics and Optical Communications,Beijing University of Posts and Telecommunications,Beijing 100876,China 3 Network Operation Supporting Center,China Mobile Group Beijing Co.,Ltd.,Beijing 100036,China |
| Abstract: | A new cross-tracking method is proposed to improve the convergent speed of the control algorithm in real-time polarization mode dispersion(PMD)compensation systems.The cross-tracking algorithm is compared with the previously used dithering particle swarm optimization(DPSO)and gradient particle swarm optimization(GPSO)algorithms,and it is proven to offer the best performance among the three algorithms.The transmission of a 43-Gb/s differential quadrature phase-shift keying(DQPSK)signal over a 1 200-km fiber span using a compensator based on digital signal processing(DSP)is demonstrated via the cross-tracking algorithm. |
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