Broadband Optical Amplification of PbS Quantum?Dot?Doped Glass Fibers

The rapid development of global telecommunication, cloud computing, big data, consumer electronics create increasing demands to expand the capacity and rate data transmission for next generation broadband optical communication. It raises a great challenge current rare-earth ions doped fiber amplifiers due narrow emission bandwidth ions. In this context, near-infrared (NIR) emitter based are in urgent demand. Here, amplification S + C L bands is achieved first time PbS quantum dot (QD)-doped low-melting-point glass fiber. With pump 976 nm laser, on-off gain QD-doped (PQDF) ranges from 1.4 8.7 dB 1500–1630 nm, while that 6.9 8.4 1530–1630 nm. Both show tunable luminescence covering entire communication windows (O E U). much higher yield QDs than colloidal QDs, ultra-broad controllable make promising applications lasers.