Distributed Raman Optical Amplification in Phase Coherent Transfer of Optical Frequencies

被引：20

作者：

Clivati, Cecilia ^{[1
,2
]}

Bolognini, Gabriele ^{[3
]}

Calonico, Davide ^{[1
]}

Faralli, Stefano ^{[4
]}

Levi, Filippo ^{[1
]}

Mura, Alberto ^{[1
]}

Poli, Nicola ^{[5
,6
,7
]}

机构：

[1] Ist Nazl Ric Metrol, I-10135 Turin, Italy

[2] Politecn Torino, I-10134 Turin, Italy

[3] CNR, IMM Inst, I-40129 Bologna, Italy

[4] Scuola Super Sant Anna, TeCIP Inst, I-56124 Pisa, Italy

[5] Univ Firenze, Dipartimento Fis & Astron, I-50019 Sesto Fiorentino, Italy

[6] Univ Firenze, LENS, I-50019 Sesto Fiorentino, Italy

[7] Ist Nazl Fis Nucl, Sez Firenze, I-50019 Sesto Fiorentino, Italy

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 2013年 / 25卷 / 17期

关键词：

Coherent optical links; frequency comparisons of optical clocks; optical amplifiers; LINK;

D O I：

10.1109/LPT.2013.2273269

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We describe the application of Raman optical-fiber amplification (ROA) for the phase coherent transfer of optical frequencies in an optical fiber link. ROA uses the transmission fiber itself as a gain medium for bi-directional coherent amplification. In a test setup, we evaluated the ROA in terms of ON/OFF gain, signal-to-noise ratio, and phase noise added to the carrier. We transferred a laser frequency in a 200 km optical fiber link, and evaluated both co-propagating and counter-propagating amplification pump schemes. Then, we identified the occurrence of nonlinearities on the signal for non-optimized ROA gain. The frequency at the remote end has a fractional frequency instability of 3 . 10(-19) over 1000 s with the optical fiber link noise compensation.

引用

页码：1711 / 1714

页数：4

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