Coherent optical fiber communication system with 336 Tb/s transmission uses cost-saving single light source

https://techxplore.com/news/2024-10-coherent-optical-fiber-communication-tbs.html

"with optical comb generation/ frequency reference distribution, replacing 100's built-in light sources within transponder modules... 650 carrier/ local oscillator pairs generated over most of S, C, and L bands (16 THz frequency band) without need for compact S-band light sources... transmitter/ receiver same oscillation frequency so no need of independent stabilization... 39-core multicore fiber with 38 cores supporting three-mode propagation, 1 core supporting single-mode...  transmission capacity 336 Tb/s, almost 200X greater"