Long-haul optical transmission link using low-noise phase-sensitive amplifiers
Journal article, 2018

The capacity and reach of long-haul fiber optical communication systems is limited by in-line amplifier noise and fiber nonlinearities. Phase-sensitive amplifiers add 6 dB less noise than conventional phase-insensitive amplifiers, such as erbium-doped fiber amplifiers, and they can provide nonlinearity mitigation after each span. Realizing a long-haul transmission link with in-line phase-sensitive amplifiers providing simultaneous low-noise amplification and nonlinearity mitigation is challenging and to date no such transmission link has been demonstrated. Here, we demonstrate a multi-channel-compatible and modulation-format-independent long-haul transmission link with in-line phase-sensitive amplifiers. Compared to a link amplified by conventional erbium-doped fiber amplifiers, we demonstrate a reach improvement of 5.6 times at optimal launch powers with the phase-sensitively amplified link operating at a total accumulated nonlinear phase shift of 6.2 rad. The phase-sensitively amplified link transmits two data-carrying waves, thus occupying twice the bandwidth and propagating twice the total power compared to the phase-insensitively amplified link.

Author

Samuel L I Olsson

Tallinn University of Technology (TalTech)

Chalmers, Microtechnology and Nanoscience (MC2), Photonics

Henrik Eliasson

Chalmers, Microtechnology and Nanoscience (MC2), Photonics

E. Astra

Nokia Bell Labs

Magnus Karlsson

Chalmers, Microtechnology and Nanoscience (MC2), Photonics

Peter Andrekson

Chalmers, Microtechnology and Nanoscience (MC2), Photonics

Nature Communications

2041-1723 (ISSN)

Vol. 9 1 729

Subject Categories

Telecommunications

Other Physics Topics

Communication Systems

DOI

10.1038/s41467-018-04956-5

More information

Latest update

9/12/2018