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スエーデン Chalmers University of Technologyのプレスリリースです:
"Optical amplifier with world record low noise"
20 Jun 2011, Chalmers University of Technology
http://www.chalmers.se/en/news/Pages/Optical-amplifier-with-world-record-low-noise.aspx
.....
"The researchers at Chalmers University of Technology have, by using
a so-called phase-sensitive fiber-optic parametric amplifier, PSA,
reduced the noise figure to 1 dB. In traditional erbium-doped fiber
amplifiers the noise figure is 3 dB at best, resulting in loss of
signal integrity. 1 dB is the lowest noise ever reported in any kind
of amplifier with reasonably large signal gain. This represents
a breakthrough also because it is implemented in a practical way,
making it potentially very attractive in various applications
- most notably in high capacity optical communication systems."
発表論文:
"Towards ultrasensitive optical links enabled by low-noise
phase-sensitive amplifiers"
Z. Tong, C. Lundstrom, P.A. Andrekson, ..... , L. Gruner-Nielsen
Nature Photonics (2011), DOI: 10.1038/nphoton.2011.79
Received: 06 October 2010, Accepted: 14 April 2011,
Published online: 05 June 2011
http://www.nature.com/nphoton/journal/vaop/ncurrent/full/nphoton.2011.79.html
※日本からの研究者も含まれています。
Peter Andrekson, Professor
Head of the Fibre Optic Communications Research Centre (FORCE)
http://www.chalmers.se/mc2/force-en/people/peter-andrekson
"Interview with Peter Andrekson, Photonics"
http://www.chalmers.se/en/research/professors/interview/Pages/interview-with-peter-andrekson-photonics.aspx
"New centre reinforces research into global communication"
01 Mar 2010, Chalmers University of Technology
http://www.chalmers.se/en/news/Pages/new-centre-reinforces-research-into-global-communication.aspx
Fibre Optic Communications Research Centre (FORCE)
http://www.chalmers.se/mc2/force-en
L. Gruner-Nielsen, OFS Danmark
OFS Danmark
http://www.ofs.dk/
OFS, a Furukawa Company
http://www.ofsoptics.com/
解説記事:
"New research breakthrough will boost optical networks"
Jun. 21, 2011, GigaOM
http://gigaom.com/broadband/new-research-breakthrough-will-boost-optical-networks/
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