Li Yunchu, Stewart Lawrence S, Dapkus P Daniel
University of Southern California, 3651 Watt Way, VHE 302, Los Angeles, California 90089, USA.
Opt Express. 2012 Mar 26;20(7):7404-14. doi: 10.1364/OE.20.007404.
High speed coupling-modulation of a microring-based light drop structure is proposed, which removes severe signal distortion due to intracavity energy depletion and separates the modulation speed from the resonator linewidth restriction. Extinction ratio improvement from <1 dB to >20 dB with 40 Gb/s non-return-to-zero (NRZ) signals is obtained with 25 times smaller drive voltage. The tolerance to active ring propagation loss is increased from 5 dB/cm to over 25 dB/cm with less than 5% modulation bandwidth reduction. The possibility of obtaining 160 Gb/s NRZ signal with no more than 4 V drive voltage and less than 5 dB insertion loss is highlighted.
提出了一种基于微环的光分路结构的高速耦合调制方法，该方法消除了由于腔内能量耗尽导致的严重信号失真，并将调制速度与谐振器线宽限制分离开来。使用25倍小的驱动电压，在40 Gb/s非归零（NRZ）信号下，消光比从<1 dB提高到>20 dB。有源环传播损耗的容限从5 dB/cm提高到超过25 dB/cm，同时调制带宽降低不到5%。突出了在不超过4 V驱动电压和小于5 dB插入损耗的情况下获得160 Gb/s NRZ信号的可能性。
