100-Gb/s Hybrid Multiband CAP/QAM Signal Transmission Over a Single Wavelength
100-Gb/s Hybrid Multiband CAP/QAM Signal Transmission Over a Single Wavelength
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DOI：
10.1109/jlt.2014.2387352
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发表时间：
2015-01
影响因子：
4.7
通讯作者：
Jinlong Wei;Q. Cheng;D. Cunningham;R. Penty;I. White
中科院分区：
文献类型：
--
作者：
Jinlong Wei;Q. Cheng;D. Cunningham;R. Penty;I. White
首次提出了混合多频带（HMB）CAP/QAM发射机/接收机系统。仿真结果显示了采用单激光源传输HMB CAP-16/QAM-16、CAP-32/QAM-32和CAP-64/QAM-64信号的100 Gb以太网链路的可行性。所提出的混合方案对直接调制的激光非线性具有较低的灵敏度。我们发现，QAM接收机带来了相同的抖动容限的理想相位补偿CAP接收机，和QAM接收机是更实际的，因为没有相位跟踪和补偿是必需的。与使用标准非相位补偿CAP接收机的情况相比，使用修改的QAM-16/32/64接收机显著降低了多频带以及单频带情况下的系统定时抖动灵敏度。结果还表明，使用的频带数量的增加会导致系统的功率裕度增加。对于±6 ps的实际抖动条件，确定具有最佳频带数的三个HMB CAP/QAM系统能够支持15 km SMF上的单激光100 Gb/s传输。
Hybrid multiband (HMB) CAP/QAM transmitter/receiver systems are proposed for the first time. Simulation results are provided to show the feasibility of 100 Gb Ethernet links employing a single-laser source transmitting HMB CAP-16/QAM-16, CAP-32/QAM-32, and CAP-64/QAM-64 signals. The proposed hybrid scheme has low sensitivity to directly modulated laser nonlinearities. We found that QAM receivers bring about identical jitter tolerance to ideally phase compensated CAP receivers, and QAM receivers are more practical since no phase tracking and compensation are required. Compared with the case of using a standard non phase compensated CAP receiver, the use of the modified QAM-16/32/64 receiver significantly lowers system timing jitter sensitivity in the multiband, as well as single-band case. Results also show that the use of increasing number of bands causes increased system power margin. For practical jitter conditions of ±6 ps, three HMB CAP/QAM systems with optimum band counts are identified to be capable of supporting single-laser 100 Gb/s transmission over 15-km SMF.