High bismuth-doped germanosilicate fiber for efficient E + S-band amplification
Shaokun Liu, Xiaoke Yin, Zhimu Gu, Le He, Wenzhen Li, Yang Chen, Yingbin Xing, Yingbo Chu, Nengli Dai, Jinyan Li
Abstract
Bismuth-doped germanosilicate fiber (BGSF), the active media of fiber amplifiers, has attracted widespread attention. Here, we report a BGSF with a high bismuth concentration of 0.075 wt. % and achieve high-efficiency E + S-band amplification, which was prepared by the modified chemical vapor deposition (MCVD) process. The small signal absorption (SSA) and unsaturated loss (UL) of BGSF at 1310 nm are 1.32 and 0.11 dB/m, respectively. The results show a record with only 45 m BGSF was created, to the best of our knowledge, which provides a maximum gain of 39.24 dB with an NF of 6.2 dB at 1430 nm under -20 dBm input signal power.
Topics & Concepts
BismuthMaterials scienceOpticsChemical vapor depositionFiberOptical fiberOptoelectronicsDopingOptical amplifierAmplifierAmplified spontaneous emissionSIGNAL (programming language)LaserPhysicsMetallurgyComposite materialProgramming languageCMOSComputer scienceOptical Network TechnologiesPhotonic Crystal and Fiber OpticsAdvanced Fiber Optic Sensors