Mid-IR Amplification Based on a Pr3+: InF3 Optical Fiber in the Range $3.8 - 4.2\ \mu \text{m}$
Year: 2025
Type: article
Abstract: In this article, for the first time, to the best of our knowledge, a fiber optic amplifier, operating in the middle-infrared wavelength range, has been designed, considering a single mode fluoroindate optical fiber, doped with praseodymium. After the electromagnetic investigation of the fiber, the design of the optical amplifier has been performed via a home-made computer code solver, employing measured spectroscopical parameters. The validated code solves the rate equation and the power propagation equation of the pump, the signal, and Amplifier Spontaneous Emission noise, considering the first and second order phenomena. The designed optical amplifier is very promising, exhibiting high simulated gain${{G }} = 32.6 \,{\text{dB}}$and a wide −3 dB bandwidth of$115\ {\rm{nm}}$with noise figure${{NF }}$= 6 dB around the central signal wavelength$4 {\mu \text{m}}$, for input pump power${{\mathrm{P}}_{\mathrm{p}}} = 2 \ { \text{W}}$, input signal power${{\mathrm{P}}_{\mathrm{s}}} = - 30\ {\rm{ dBm}}$, and pump wavelength${{{{\lambda }}}_{\mathrm{p}}} = 1.55\,{\mu \text{m}}$. This work suggests that high-performance Mid-IR optical amplifier could be fabricated considering feasible fluoroindate optical fiber doped with praseodymium providing for the first time the design parameters.
Source: Journal of Lightwave Technology
Institutions: Polytechnic University of Bari, Politecnico di Torino
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $2,645
OpenAlex ID: W4408145525