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Study of a PMD Tolerance Extension by InP HBT Analog EDC IC without Adaptive Control in 43G DQPSK Transmission

机译:在43G DQPSK传输中采用无自适应控制的InP HBT模拟EDC IC扩展PMD公差的研究

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摘要

We experimentally studied the polarization mode dispersion (PMD) tolerance of an feed-forward equalizer (FFE) electronic dispersion compensation (EDC) IC in the absence of adaptive control, in 43-Gbit/s RZ-DQPSK transmission. Using a 3-tap FFE IC composed of InP HBTs, differential group delay (DGD) tolerance at a 2-dB Q penalty is shown to be extended from 25 ps to up to 29 ps. When a polarization scrambler is used, the tolerance is further extended to 31 ps. This value is close to the tolerance obtained with adaptive control, without a polarization scrambler.
机译:我们在43 Gbit / s RZ-DQPSK传输中,在没有自适应控制的情况下,通过实验研究了前馈均衡器(FFE)电子色散补偿(EDC)IC的偏振模色散(PMD)容限。使用由InP HBT组成的3抽头FFE IC,在2 dB Q罚分下的差分群时延(DGD)容限从25 ps扩展到了29 ps。当使用偏振加扰器时,容差进一步扩展到31 ps。该值接近没有偏振扰频器的情况下通过自适应控制获得的容差。

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