Phase regeneration of a star-8QAM signal in a phase-sensitive amplifier with conjugated pumps

Stiller B, Onishchukov G, Schmauß B, Leuchs G (2014)

Publication Language: English

Publication Type: Journal article

Publication year: 2014

Journal

Optics Express Optical Society of America

Publisher: Optical Society of America

Book Volume: 22

Pages Range: 1028

Journal Issue: 1

DOI: 10.1364/oe.22.001028

Abstract

We demonstrate numerically phase regeneration of a star-8QAM signal with two amplitude and four phase states in a phase-sensitive amplifier. In a dual-stage setup, two phase-conjugated idlers are generated in a first stage consisting of two fiber-optic parametric phase-insensitive amplifiers operated in highly nonlinear gain regime. These are used as pumps in the second, phase-sensitive amplification stage which enables efficient phase regeneration via a degenerate four-wave-mixing process. The latter can be operated in two different operation modes: without format conversion or with phase-shifted amplitude levels. In both regimes, we observe high phase-regeneration efficiency for all amplitude levels: the initial phase noise with 0.2 rad standard deviation is reduced by a factor of 5.

Authors with CRIS profile

Birgit Stiller Lehrstuhl für Experimentalphysik Georgy Onishchukov Lehrstuhl für Experimentalphysik Bernhard Schmauß Professur für Hochfrequenztechnik mit dem Schwerpunkt Optische Hochfrequenztechnik und Photonik Gerhard Leuchs Lehrstuhl für Experimentalphysik

How to cite

APA:

Stiller, B., Onishchukov, G., Schmauß, B., & Leuchs, G. (2014). Phase regeneration of a star-8QAM signal in a phase-sensitive amplifier with conjugated pumps. Optics Express, 22(1), 1028. https://doi.org/10.1364/oe.22.001028

MLA:

Stiller, Birgit, et al. "Phase regeneration of a star-8QAM signal in a phase-sensitive amplifier with conjugated pumps." Optics Express 22.1 (2014): 1028.

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