H2020Индивидуална стипендия2015–2017

CHAOS · Nonlinear Compensation in Hybrid Raman/EDFA Amplified Optical Systems

„Хоризонт 2020“ — Действия „Мария Склодовска-Кюри“

Период: 2015-04-01 → 2017-03-31
Финансиране от ЕС: 158 122 €
Участници: 1
Схема: MSCA-IF-EF-ST

Линиите свързват координатора с партньорите.

Накратко на български

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Този кратък обзор е генериран от изкуствен интелект

Кратко обяснение, генерирано от езиков модел по текста на CORDIS. Оригиналът е по-долу.

Резултати накратко

Nonlinear Compensation in Hybrid Raman/EDFA Amplified Optical Systems

Over the past 25 years, optical fiber communications have heralded a revolution in the high-speed transmission information of information accross the globe, in perfect synergy with the advent of world-changing concepts such as the world-wide-web, big data transmission and processing, video communication or high-definition on-demand entertainment. The capacity of fiber optic communication systems has experienced a steady and rapid growth over the years, adapting to the ever growing requirements of society. In recent years, worries have arisen regarding the theoretical capacity limits for fiber-optic technology, and several methods have been proposed to overcome the barrier posed by the nonlinear Shannon limit. This project combines several of the most promising (both in terms of potential cost and performance) solutions to this problem, developing new methods for nonlinear effect compensation in systems with advanced optical amplification relying on the most efficient transmission formats. A novel amplification scheme that uses fibre Bragg grating (FBG) to form an ultra-long Raman fibre laser (URFL) along the transmission span allows to achieve second order pumping of the signal with a single pump wavelength only. Contrary to conventional 2nd/dual order Raman amplification, in URFL the gain profile can be modified, and in fact enhanced by selecting appropriate FBGs. This unique amplification method minimises the variation of the effective gain-loss coefficient along the propagation forming a quasi-lossless transmission medium. This amplification can realise full potential of coherent detection without the need of installing new fibres. Digital coherent detection offers additional degree of freedom to transmit the information with an optical phase. This allows higher capacity transmission without increasing receivers’ complexity as both the phase and polarization of the signal can be recovered with digital signal processing (DSP). Additionally digital backpropagation (DBP) can compensate for both, linear and nonlinear impairments by solving an inverse nonlinear Schrödinger equation (NLSE) and effectively reduce the impact of nonlinear phase noise (NLPN). To summarise, this project develops the algorithms and methods for nonlinearity compensation in novel URFL optical transmission system and reduce the computational complexity of the DSP code. It brings nonlinear compensation with DBP one step closer to a commercial implementation, and explores other methods for nonlinear compensation, such as Optical Phase Conjugation, in combination with advanced distributed amplification schemes.

Текст от CORDIS, на английски · Данни: CORDIS, © Европейски съюз

Цел на проекта

Over the past 25 years, optical fiber communications have heralded a revolution in the high-speed transmission information of information accros the globe, in perfect synergy with the advent of world-changing concepts such as the world-wide-web, big data transmission and processing, video communication or high-definition on-demand entertainment. The capacity of fiber optic communication systems has experienced a steady growth over the years, adapting to society's requirements. In recent years, worries have arisen regarding the theoretical capacity limits for fiber-optic technology, and several methods have been proposed to overcome the barrier posed by the nonlinear Shannon limit. The ambition of this proposal is to combine several of the most promising (both in terms of potential cost and performance) solutions to this problem, developing new methods for nonlinear effect compensation in systems with advanced optical amplification relying on the most efficient transmission formats. This fellowship is to provide the early career, but experienced researcher Pawel Rosa with an opportunity to expand his experimental knowledge in the field of optical communication and combine techniques from digital signal processing and numerical modelling into the development of novel solutions and patentable methods for nonlinearity compensation in optically amplified optical transmission systems with amplification based on either Erbium-doped fibers (EDFA), advanced distributed Raman schemes or a combination of both (hybrid amplification).The multidisciplinary aspects of the proposal will benefit the fellow in his way to reaching professional maturity in the field of optical communications and photonics. The project will blend the concepts of advanced optical amplification, coherent transmission, applied mathematics and novel computational methods, under the supervision of world-leading experts in the corresponding areas.

Оригинален текст от CORDIS (на английски).

Участници

AGENCIA ESTATAL CONSEJO SUPERIOR DE INVESTIGACIONES CIENTIFICAS · MadridКоординаторИспания