Abstract: This paper proposes a single-mode optical fiber transceiver(SMF transceiver) based on wavelength division multiplexing(WDM), designed to replace the traditional multi-mode optical fiber transceiver(SMF transceiver) in the multi-power supply control system for vacuum coating. Through experiments comparing the rise/fall time and transmission delays of the two transceivers for 20 kHz, 250 kHz,and 1 MHz signals, it is proved that the SMF transceiver control scheme can achieve equivalent or superior timing performance (e.g., an 85% reduction in rise time at 20 kHz) while reducing fiber usage by 50%. Scalability analysis demonstrates that using the SMF transceiver decreases the number of fiber links from 2N to N, which effectively addresses cabling and maintenance challenges in large-scale deployments. Cost analysis indicates that the use of SMF transceiver control solutions can reduce the total cost of ownership by about 33%. However their sensitivity to wavelength accuracy and temperature stability requires、 consideration in engineering design.

Key words: optical fiber communication system, vacuum coating control system, multimode fiber transceiver, single-mode fiber transceiver