Beyond 300 Gbps Short-Reach Links Using TFLN MZMs With 500 mV<sub>pp</sub> and Linear Equalization
نویسندگان
چکیده
Driven by the growing data demand and stringent power constraints on short-reach datacenter interconnects (DCI), this work compares driver-less (RF driver-free) transmission performance of thin-film lithium niobate (TFLN) Mach-Zehnder modulators (MZM). Two C-band MZMs (18 / 23 mm) fabricated in a commercial foundry are considered. Using longer MZM with only linear equalization ~500 mVpp driving signal, we transmit: (1) 132 Gbaud PAM6 signal (net 309 Gbps) below 6.7% overhead (OH) hard-decision (HD)-FEC threshold; (2) 136 PAM8 342 above 19.02% OH soft-decision (SD)-FEC normalized generalized mutual information (NGMI) threshold 0.8798 over 500 m standard single-mode fiber (SSMF). This demonstrates feasibility operating beyond 300 G/lane using TFLN CMOS-compatible levels.
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ژورنال
عنوان ژورنال: IEEE Photonics Technology Letters
سال: 2023
ISSN: ['1941-0174', '1041-1135']
DOI: https://doi.org/10.1109/lpt.2022.3227085