Scientists develop DMG equalization strategy via femtosecond laser micromachining induced refractive index tailoring

https://phys.org/news/2024-08-scientists-dmg-equalization-strategy-femtosecond.html

"Mode Division Multiplexing exponentially expands communication systems' capacity using multiple mutually orthogonal spatial modes within few-mode optical fiber as independent transmission channels, now with enhanced capacity and reach... differential mode gain equalization strategy via femtosecond laser micromachining induced refractive index tailoring... 5.4 dB maximum equalization range satisfying flexible application of current FM-EDFA... works well even when guided mode group increases to higher orders"