LBTEK’s 1×4 single mode fiber optic coupler is fabricated using fused-taper technology, enabling the redistribution of light signals transmitted in fibers through a special structure, allocating optical power in a predetermined ratio. LBTEK’s fiber optic couplers cover a wavelength range of 560-1550 nm and feature low insertion loss, low additional loss, high return loss, and excellent stability. They can be widely applied in fields such as fiber optic communication, underwater laser communication, fiber optic lasers, fiber optic amplifiers, and more. LBTEK offers various customization services, including tailored coupling structures (1×4, 1×8, and 1×16, etc.), power, wavelength, coupling ratio, and connectors. For specific customization needs, please contact LBTEK technical support.