Wavelength-division multiplexing (WDM) has historically enabled the increase in the
capacity of optical systems by progressively populating the existing optical bandwidth of …

This article proposes an optical parametric amplifier (OPA), as an inline-repeater, using a
periodically-poled-LiNbO_3 (PPLN) waveguide with over-10-THz amplification bandwidth …

We report for the first time an ultra-wideband coherent (UWB) WDM transmission over a 70
km standard single mode fibre (SSMF) solely using a multistage discrete Raman amplifier …

Optical communication systems, operating in C-band, are reaching their theoretically
achievable capacity limits. An attractive and economically viable solution to satisfy the future …

The optical parametric amplifier (OPA) has attractive features for optical communications,
such as a wideband, high gain, and fast transient response. In addition, by using idler light …

We report the transmission of five 30-GBaud dual polarization 16-QAM signals over 160 km
of standard single-mode fiber in the E-band (1410–1460 nm). The transmission line consists …

Capacity enhancement by utilising the unused spectral bands of the low-loss optical window
of standard single-mode fibre (SSMF) is a cost-effective solution for meeting the future …

We report a first-time ultra-wideband transmission through 70-km long fiber enabled by
hybrid amplifier based on bismuth-doped fiber and discrete Raman amplification. The …

The periodically poled LiNbO_3 (PPLN) based optical parametric amplifier (OPA) is a
technology that contributes to the construction of multi-band wavelength-division …

We propose a highly-flexible multi-band OXC which effectively utilizes enhanced network
resources through multi-band WDM for the first time. We experimentally confirm the …