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18 December 2018 Optical amplification for quantum sources of ultra-stable optical frequency
Josef Vojtech, Ondrej Havlis, Martin Slapak, Jan Radil, Petr Munster, Tomas Horvath, Lada Altmannova, Radek Velc, Jan Kundrat, Rudolf Vohnout, Pavel Skoda, Michal Altmann, Vladimir Smotlacha, Michal Hazlinsky, Ondrej Cip, Martin Cizek, Jan Hrabina, Lenka Pravdova, Vaclav Hucl, Simon Rerucha
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Proceedings Volume 10976, 21st Czech-Polish-Slovak Optical Conference on Wave and Quantum Aspects of Contemporary Optics; 109760Q (2018) https://doi.org/10.1117/12.2513641
Event: 21st Czech-Polish-Slovak Optical Conference on Wave and Quantum Aspects of Contemporary Optics, 2018, Lednice, Czech Republic
Abstract
The reach of any all-optical transmission is limited by attenuation of transmission path and other factors as signal to noise ratio, and it can be extended by all-optical amplification. Bidirectional single fibre transmission introduces an issue of bidirectional symmetrical amplifiers in order not to lose advantage of path symmetry. In case of time transfer, quasibidirectional amplification might be acceptable when supported by specific arrangements, e.g. as much as possible equal arrangement for disjoint segments of the path. Time transfer with best available accuracy or optical frequency transfers require single path optical amplifiers that are further considered. In this constitution, unfortunately, reflections together with Rayleigh back-scattering will create feedback. In case feedback is strong enough and discrete amplifier operates in high gain regime (about 20dB), the whole system will start to oscillate. It saturates the gain of amplifiers and also can generate errors, when lasing in a transmission band. In the article, we review possible all optical amplification methods including those allowing to use untraditional transmission bands (outside C band).
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Josef Vojtech, Ondrej Havlis, Martin Slapak, Jan Radil, Petr Munster, Tomas Horvath, Lada Altmannova, Radek Velc, Jan Kundrat, Rudolf Vohnout, Pavel Skoda, Michal Altmann, Vladimir Smotlacha, Michal Hazlinsky, Ondrej Cip, Martin Cizek, Jan Hrabina, Lenka Pravdova, Vaclav Hucl, and Simon Rerucha "Optical amplification for quantum sources of ultra-stable optical frequency", Proc. SPIE 10976, 21st Czech-Polish-Slovak Optical Conference on Wave and Quantum Aspects of Contemporary Optics, 109760Q (18 December 2018); https://doi.org/10.1117/12.2513641
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KEYWORDS
Optical amplifiers
Fiber amplifiers
Data transmission
Interference (communication)
Photons
Semiconductor optical amplifiers
Quantum optics
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