Ultra-broadband two-pump optical parametric amplifier in tellurite waveguides with engineered dispersion

Abstract

The capacity of communication networks may be significantly improved by simply enhancing the optical amplifier bandwidth. This paper presents a numerical investigation of an ultra-broadband, low-ripple, two-pump-optical parametric amplifier (2P-OPA) that employs a tellurite glass buried-channel type nano-waveguide as nonlinear medium. The nano-waveguide was designed as a 25-cm-long Archimedean spiral that occupies a footprint of only ~2.5 mm², with a ~0.7 μm² effective cross section. Its zero-dispersion wavelength is ~1550 nm, the nonlinear coefficient is ~3000 W^-1 km^-1 _, and the attenuation coefficient is ~0.5 dB/m (1100 to 1900 nm). Simulations suggest a 2P-OPA based on such waveguide will be able to amplify 243 QPSK input channels modulated at 56 Gbps over 102 nm bandwidth, over metropolitan area network scales.

A review on pedestal waveguides for low loss optical guiding, optical amplifiers and nonlinear optics applications

“…Due to the very long fiber lengths required for OPAs, SBS is a compromising issue in fiber optics technology. Integrated photonics has the potential to be the perfect solution to make OPAs feasible, since devices with length on the centimeter scale can present the same overall gain as meters of kilometers of optical fiber [73][74][75][76].…”

Ultra-broadband Optical Gain Engineering in Solution-processed QD-SOA Based on Superimposed Quantum Structure

“…Among these, optical amplifiers have drawn great attention in recent years due to their numerous hybrid and integrated applications in optical networks 2 , silicon photonics 3 , all-optical switching 4 , and signal processing 5,6 , playing significant roles as amplifiers (preamplifiers, in-line amplifiers, and power boosters) 7–9 , wavelength converters 10–12 , modulators 13,14 , and all-optical logic gates 15 . Different types of optical amplifiers including solid-state 16 , doped fiber 17–19 , tapered 20 , Raman 21,22 , parametric 23–26 , and semiconductor optical amplifiers (SOAs) 27–31 have been investigated for various output optical spectra.…”