20 Jun 2011 Researchers at Chalmers have demonstrated an optical amplifier which can amplify light with extremely low noise. The breakthrough enables a
The most practical optical amplifiers to date include the SOA and EDFA types. High noise figure and cross-talk levels due to nonlinear phenomenon such as 4-.
This chapter describes quantum noise in optical amplifiers, including population-inversion–based amplifiers such as an Erbium-doped fiber amplifier and abecoming too noisy to be detected. Before the commercialization of optical amplifiers, it was necessary to electronically regenerate the optical signals every
Tutorial on fiber amplifiers. The nineth part discusses excess noise generated by fiber amplifiers. This is a quantum-mechanical phenomenon, and it is made