Dispersion compensation of high-speed data using an integrated silicon nitride ring resonator
K. Y. K. Ong, G. F. R. Chen, P. Xing, H. Gao, D. T. H. Tan
Abstract
Dispersion impairments are a well-known limitation in data center communications, limiting both the usable data rates and reaches. Several companies today adopt silicon photonics as a core technology in their transceiver products. This presents an opportunity for silicon photonics-based dispersion management technologies to be integrated with the transceiver transmitter or receiver. In this manuscript, we present a ring-resonator based, tunable dispersion compensation device, providing dispersion ranging as wide from + 12.9 × 10 3 ps / nm to −12.3 × 10 3 ps / nm . Thermo-optic tuning from 20°C to 70°C is demonstrated to allow continuous wavelength tuning across 200 GHz. High-speed experiments using 25 Gb/s non-return-to-zero data propagating through 20 km of single mode fiber show that a significant improvement in the eye diagram is achieved after compensation with the ring-resonator device. We demonstrate a significant improvement in the BER from 10 −3 to 10 −11 for data rates of 25 and 25.78125 Gb/s.