Baeuerle Benedikt, Hoessbacher Claudia, Heni Wolfgang, Fedoryshyn Yuriy, Koch Ueli, Josten Arne, Elder Delwin L, Dalton Larry R, Leuthold Juerg
Opt Express. 2020 Mar 16;28(6):8601-8608. doi: 10.1364/OE.384825.
100 Gb/s NRZ-OOK transmission over 14 km standard single mode fiber in the C-band is demonstrated with a simple intensity modulation and direct detection scheme. The transmission concept utilizes single sideband modulation and comprises a single differential digital-to-analog converter with adjustable phase offset, a new dual electrode plasmonic Mach-Zehnder modulator, a laser at 1537.5 nm, standard single mode fibers, a photodiode, an analog-to-digital converter, and linear offline digital signal processing. The presented SSB concept requires no DSP and complex signaling at the transmitter. The demonstrated SSB transmitter increased the possible transmission distance by a factor of 4.6 compared to a DSB transmitter. We also investigated the equalization requirements. A T/2-spaced feedforward equalizer requires 27 taps to achieve transmission over 10 km with a BER below the HD-FEC limit. In comparison to a DSB transmitter, the SSB transmitter reduced the receiver DSP complexity by a factor of 13.7.
通过简单的强度调制和直接检测方案，实现了在C波段14公里标准单模光纤上的100 Gb/s非归零开关键控（NRZ-OOK）传输。该传输概念采用单边带调制，包括一个具有可调相位偏移的单差分数模转换器、一个新型双电极等离子体马赫-曾德尔调制器、一个1537.5纳米的激光器、标准单模光纤、一个光电二极管、一个模数转换器以及线性离线数字信号处理。所提出的单边带概念在发射端无需数字信号处理（DSP）和复杂信令。与双边带（DSB）发射机相比，所展示的单边带发射机将可能的传输距离提高了4.6倍。我们还研究了均衡要求。一个间隔为T/2的前馈均衡器需要27个抽头才能在误码率低于高清前向纠错（HD-FEC）极限的情况下实现10公里的传输。与双边带发射机相比，单边带发射机将接收机DSP复杂度降低了13.7倍。
