A mid-IR amplifier constituted of a tapered chalcogenide fiber coupled to an Er3+-doped chalcogenide microsphere has been optimized via a particle swarm optimization (PSO) algorithm. The numerical model is based on the coupled mode theory and on the erbium rate equations, including the main transitions among the ion energy levels. The PSO has allowed the optimal choice of the microsphere and taper fiber radius, fiber angle taper, fiber-microsphere gap in order to maximize the amplifier gain, which is close to G=7 dB, calculated for a pump power Pp = 100 mW and the input signal power Ps=-50dBm at the signal wavelenght lambda =4500 nm.
|Titolo:||Fiber coupled Er3+:chalcogenide microsphere amplifier in Mid-IR wavelength range|
|Data di pubblicazione:||2014|
|Nome del convegno:||3rd Mediterranean Photonics Conference, MePhoCo 2014|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.1109/MePhoCo.2014.6866469|
|Appare nelle tipologie:||4.1 Contributo in Atti di convegno|