Baeuerle Benedikt, Heni Wolfgang, Hoessbacher Claudia, Fedoryshyn Yuriy, Koch Ueli, Josten Arne, Watanabe Tatsuhiko, Uhl Christopher, Hettrich Horst, Elder Delwin L, Dalton Larry R, Möller Michael, Leuthold Juerg
Opt Express. 2019 Jun 10;27(12):16823-16832. doi: 10.1364/OE.27.016823.
A new plasmonic Mach-Zehnder modulator is demonstrated at a bit rate of 120 Gb/s NRZ-OOK with low peak-to-peak driving voltages of 178 mV below the HD-FEC limit. Such record low driving voltage requirements potentially translate into an electrical drive power consumption of 862 aJ/bit. The low drive voltages have been made possible by a new differential Mach-Zehnder modulator electrode design. The differential electrode design is optimized for the balanced driving circuitry and reduces the effectively required driving voltage by a factor of four (V/4). The potential of the transmitter scheme is further demonstrated by a transmission experiment over 500 m of single mode fiber at the C-band with a BER performance below the KP4 FEC limit.
一种新型等离子体马赫曾德尔调制器在120 Gb/s非归零开关键控（NRZ-OOK）比特率下得到了演示，其峰峰值驱动电压低至178 mV，低于高色散前向纠错（HD-FEC）限制。如此创纪录的低驱动电压要求可能转化为862 aJ/比特的电驱动功耗。通过一种新型差分马赫曾德尔调制器电极设计实现了低驱动电压。差分电极设计针对平衡驱动电路进行了优化，并将有效所需驱动电压降低了四倍（V/4）。通过在C波段500米单模光纤上进行的传输实验，误码率性能低于KP4 FEC限制，进一步证明了该发射机方案的潜力。
