The team led by Professor Zhou Linjie at the School of Integrated Circuits at Shanghai Jiao Tong University has recently achieved a groundbreaking advancement. Associate Professors Lu Liangjun and Li Yu have ingeniously integrated the low-loss phase-change material Sb₂Se₃ with silicon-based micro-ring resonators, resulting in a revolutionary nearly zero-power "field-programmable" optical transceiver chip. This chip leverages electrical pulses to trigger phase changes, enabling non-volatile wavelength tuning with a precision of 10 picometers. This innovation not only meets the rigorous wavelength calibration demands of micro-ring arrays but also eliminates the need for power consumption during state maintenance. Furthermore, the team has innovatively introduced a feedback mechanism, showcasing high-speed transmission and reception capabilities of a 4-channel programmable micro-ring array at an impressive rate of 400Gbps.