A low-power-consumption single-arm-driven silicon (Si) Mach-Zehnder modulator (MZM) operated at C-band ( $\lambda =1550$ nm) for non-return-to-zero on-off-keying (NRZ-OOK) transmission beyond 50 Gbit/s over 10-km single-mode fiber (SMF) and dispersion-shift fiber (DSF) is demonstrated to guarantee the IEEE 802.3bs standardized 400GBASE-FR8/LR8 operation. The Si MZM exhibits asymmetric waveguide arms and 2-mm-contact-length phase shifter under carrier depletion operation in its p-n junction, which is DC biased as low as 2 V to provide a low $\text{V}_{\pi }\text{L}$ product of $0.909~\text {V}\cdot \text {cm}$ . For the error-free transmission of the NRZ-OOK data-stream, the single-arm-driven Si MZM supports the highest data rates of 53, 53 and 50 Gbit/s over optical back-to-back, 2-km SMF and 10-km DSF transmissions, respectively. The 50-Gbit/s receiving power penalties are respectively 0.2 and 0.25 dB after 2-km SMF and 10-km DSF propagation.

中文翻译：

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在10公里SMF和DSF上以50 Gb / s NRZ-OOK进行C波段硅波导调制

在C波段工作的低功耗单臂驱动硅（Si）Mach-Zehnder调制器（MZM） $ \ lambda = 1550 $ nm）用于在10 km单模光纤（SMF）和色散移位光纤（DSF）上以超过50 Gbit / s的速度进行非归零开关键控（NRZ-OOK）传输，从而证明了这一点。 IEEE 802.3bs标准化400GBASE-FR8 / LR8操作。Si MZM在其pn结的载流子耗尽操作下展现出不对称的波导臂和2 mm接触长度的移相器，该结被直流偏置低至2 V以提供低 $ \ text {V} _ {\ pi} \ text {L} $ 的产品 $ 0.909〜\ text {V} \ cdot \ text {cm} $ 。为了无误传输NRZ-OOK数据流，单臂驱动的Si MZM在光背对背，2 km SMF和DSF传输分别为10公里。在2 km SMF和10 km DSF传播后，50 Gbit / s的接收功率损失分别为0.2 dB和0.25 dB。