1940nmLaserModule with FiberCoupling All series CNI laser modules can be fiber coupled with different core diameter MM fiber or SM fiber. You have to refer to the detailed specs of each laser modules (such as power, stability, noise, size, etc) to decide which one is suitable for your application. We would like to do the coupling job for you. Fiber Coupling Efficiency Chart (Connector: SMA905 or FC) Laser Type Fiber Coupling Efficiency FC for SM fiber , FC/SMA905 for MM fiber SM Fiber 49 m MM Fiber 50 m MM Fiber 100 m MM Fiber 200 m MM Fiber 400 m DPSS Laser TEMoo >40% >70% >75% >80% >90% Multi transverse mode >20% >60% >70% >80% >90% Diode Laser TEMoo >30% >60% >75% >80% >90% Multi transverse mode Low