DMITRY LEVANDOVSKY, MICHAEL VASILYEV* and PREM KUMAR*

Tellabs Operations Inc., 4951 Indiana Avenue, Lisle, IL 60532, USA

* Department of Electrical and Computer Engineering, Northwestern University, Evanston,  Illinois 60208-3118, USA

Email: dmitry.levandovsky@tellabs.com

Abstract.

We report near-noiseless (noise figure of 0.4, dB, which is an improvement over the theoretical limit of 1.2, dB for a conventional laser amplifier with the same gain of 1.7, dB) optical amplification of laser light in a phase-sensitive fibre amplifier.

Keywords: Fiber optics; parametric amplifier; Sagnac interferometer

Pacs Nos. 42.65.Yj; 42.50.Ar; 42.50.Dv; 42.50.Lc