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

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 similar to 2.5 mm(2), with a similar to 0.7 mu m(2) effective cross section. Its zero-dispersion wavelength is similar to 1550 nm, the nonlinear coefficient is similar to 3000 W-1 km(-1), and the attenuation coefficient is similar to 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 scales25442684283CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO - CNPQFUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DE SÃO PAULO - FAPESP574017/2008-9; 311137/2014-8; 311870/2014-72008/57857-