A5021063471- Optical Network Technologies
- Advanced Photonic Communication Systems
- Photonic and Optical Devices
- Advanced Optical Network Technologies
- Semiconductor Lasers and Optical Devices
- Advanced Fiber Laser Technologies
- Advanced Wireless Communication Techniques
- PAPR reduction in OFDM
- Error Correcting Code Techniques
- Quantum Information and Cryptography
- Quantum Computing Algorithms and Architecture
- Blind Source Separation Techniques
- Optical Wireless Communication Technologies
- Power Line Communications and Noise
- Radio Frequency Integrated Circuit Design
- graph theory and CDMA systems
- Quantum-Dot Cellular Automata
- Quantum Mechanics and Applications
- Advanced MIMO Systems Optimization
- Advanced Fiber Optic Sensors
- Ultra-Wideband Communications Technology
- Wireless Communication Networks Research
- Interconnection Networks and Systems
- Neural Networks and Reservoir Computing
- Gyrotron and Vacuum Electronics Research
Nokia (France)
2016-2025
Nokia (United States)
2011-2021
Nokia (Finland)
2015-2021
Nokia (Canada)
2017
Weatherford College
2014
Alcatel Lucent (Germany)
2013
Université Laval
2007-2011
ICT Research Institute
2006
Amirkabir University of Technology
2006
We review the most recent advanced concepts and methods employed in cutting-edge spectrally efficient coherent fiber-optic transoceanic transmission systems, such as probabilistic shaping, adaptive digital nonlinear compensation, rate-adaptive spatially coupled low-density parity check codes, dual-band C+L-band transmission. Building upon all these methods, we demonstrate of 179 channels carrying a record net data rate 65 Tb/s over 6600 km, achieving spectral efficiency 7.3 b/s/Hz, average...
We demonstrate the first 115Tb/s lumped amplified transmission system based on novel ultrawideband semiconductor optical amplifiers. show successful of 250 channels carrying >400Gb/s each over a 100-km link.
In this paper, 5 Tb/s bidirectional transmission (2.5 in each direction) over 2.2 km of OM2 fiber is demonstrated using selective excitation four mode groups, wavelength division multiplexing, and direct detection. Twenty wavelengths per group are used, modulated discrete multitone scheme with 1024 subcarriers external lithium niobate Mach–Zehnder modulator (MZM). A minimum bit rate 68.8 Gb/s channel obtained for a error 3.8 × 10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML"...
Quantum key distribution (QKD) enables the establishment of secret keys between users connected via a channel vulnerable to eavesdropping, with information-theoretic security, that is, independently power malevolent party [1]. QKD systems based on encoding information continuous variables (CV), such as values quadrature components coherent states [2], [3], present major advantage they only require standard telecommunication technology. However, most general security proofs for CVQKD required...
A general theory of nonlinear interactions between signal and amplified spontaneous emission noise in wavelength division multiplexed fiber-optic coherent transmission systems is presented. This based on the regular perturbation treatment Schrödinger equation, which governs wave propagation optical fiber, exact up to first order fiber coefficient. It takes into account all cross-channel four-wave mixing contributions total variance distortions, dependency modulation format, erbium-doped...
We report on a full C + L-band erbium-doped fiber amplified (EDFA) submarine transmission experiment of 178 wavelength-division multiplexed channels 49-GBd polarization 16QAM signals, achieving 54.2 Tb/s after 6600 km, with record per-channel average net bit rate 304.5 Gb/s. Digital backpropagation and time-domain perturbative nonlinearity compensation were alternatively applied to all their respective benefits, in terms throughput increase, reach complexity, addressed. Multiple-rate...
A deep learning (DL) based digital backpropagation (DBP) method with a 1 dB SNR gain over conventional step per span DBP is demonstrated in 32 GBd 16QAM transmission across 1200 km. The new DL-DPB shown to require 6 times less computational power the scheme. achievement possible due novel training which DL-DBP blind timing error, state of polarization rotation, frequency offset and phase offset. An analysis underlying mechanism given. applied first undoes dispersion, compensates for...
We report on the ultra-wideband transmission of 254 PCS-64QAM channels over 300 km SSMF. demonstrate a 107-Tb/s throughput continuous 103 nm optical bandwidth using backward Raman pumping and SOA technology.
We report on the use of semiconductor optical amplifiers (SOAs) to extend bandwidth next generation systems 100 nm and beyond. After discussing technological progress motivation for rekindling interest in SOAs line amplification, we describe innovative approach developed realization ultra-wideband (UWB) SOAs. Leveraging custom design singly polarized provide gain over 100+ bandwidth, a polarization diversity architecture realize UWB-SOA modules. Embedded compact package, UWB amplifier...
With the introduction of Nyquist pulse shaping, it is possible to transmit a channel in spectral window close its baud rate. To increase overall network efficiency, most promising solution seems be reduction spacing. Standardization bodies have proposed flexible grid with 12.5 GHz granularity. Hence, 100-Gb/s signals can transported 37.5-GHz network. While spacing brings an ideal extra-throughput 33% compared 50-GHz spacing, this value ignores filtering-induced impairments occurring when...
We study, for the first time, impact of applying multiple forward error correction codes (FEC) with rates adapted to channel performance fluctuations a wavelength-division-multiplexed C+L-band PDM-16QAM transmission system over transoceanic distances, EDFA-only amplification. The extra capacity, due adaptive multirate FEC, as function reach is quantified, both and without digital postcompensation nonlinearity.
We present an alternative derivation of analytical expressions for the coefficients perturbative nonlinear pre-compensation algorithm in dispersion-unmanaged regime arbitrary pulse shapes. specialize to Nyquist pulse-shapes and show usefuleness new formulae through simulations experiments.
We experimentally demonstrate the transmission of 155 channels modulated with PDM16QAM over 6,600 km pure silica core fiber. The capacity 38.75 Tb/s is achieved using C and L bands hybrid EDFA/Raman amplification.
We propose a concept of flexible PON and show with experiments network dimensioning how burst-mode, software-defined coherent transponders can more than double the average capacity per user in TDMA access networks.
We study the performance of multicarrier offset modulation and root-raised-cosine shaped with aggregate 32.5 GBd symbol rate show that is preferable for non-zero rolloff factors.
Accounting for tight filtering impairments, we show why the ideal extra capacity of 33% brought by 37.5GHz channel spacing (compared to 50GHz) may be significantly reduced under physical constraints fully transparent meshed networks.
We report on the use of semiconductor optical amplifiers (SOAs) to extend bandwidth next generation systems. After discussing technological progress and motivation for rekindling interest in SOAs line amplification, we point out that nonlinear gain dynamics SOA is not a limiting factor employing as amplifier. show passage high wavelength division multiplexed (WDM) channel count tends substantially reduce impairments, both through numerical analysis experimental investigations based standard...
In this paper, we demonstrate up to 260-GBaud single-wavelength coherent transmission by employing an optical transmitter based on two wide-bandwidth devices: a novel 260-GS/s arbitrary waveform generator with 10-dB bandwidth of 90-GHz and thin-film Lithium Niobate I/Q modulator 3-dB 110-GHz. We first assess the performance our high symbol rate for generating spectrally efficient Nyquist multilevel modulation format signals at rates 210-GBaud >1.4-Tbps achievable information using linear...
The availability of high-speed digital-to-analog converters for coherent optical communication systems makes it possible to digitally divide the available electrical bandwidth into subchannels on each carrier which enables a parallel implementation digital signal processing. In this paper, we use multicarrier offset-QAM modulations achieve crosstalk-free modulation subcarriers spaced at symbol rate. We show that in systems, several impairments are bound break subcarrier orthogonality and...
We demonstrate 52.9Tb/s transmission over transoceanic distances thanks to spectrum shaped PDM 16QAM modulation, nonlinear mitigation, C and L band amplification adaptive multi FECs with optimized code rates maximize the total capacity.
We demonstrate the generation and detection of single-polarization 56-GBd PAM-8 PAM-4 signals using intensity modulation direct leveraging a novel high-speed high-output swing selector power DAC fabricated in an InP DHBT which does not require external driver. Considering 7% overhead hard-decision forward error control, we validate our design by transmitting 150 Gb/s net data rate signal based on over 2 km 100 4 standard single mode fiber without optical amplification. complement results...
Since the advent of wavelength division multiplexed optical systems, increasing bit rate per carrier has proved to be most effective method drive overall cost systems down. However, multicarrier approaches have gained momentum for 400-Gb/s transport cope with bandwidth limitations optoelectronic components. In this paper, single modulated over transatlantic distances is demonstrated first time. Using high-speed digital-to-analog converters, we successfully generated a 64 GBaud...
We demonstrate a single-polarization driver-free, direct-detection 56-GBaud PAM-8 transceiver enabled by high-speed selector power DAC fabricated in InP DHBT, and successfully transmit 168 Gbit/s line-rate over 2 km distance without optical amplification.
We designed a CV-QKD system with off-the-shelf components and established the feasibility of distributing 67.6 66.8 Mb/s secret key rates on average over 9.5 km SMF link, using respectively probabilistically shaped 64 256 QAM, relying novel analytical security proof.
In optical fiber networks, unrepeated links are cost effective solutions to provide connectivity in challenging contexts that hinder the deployment of in-line amplifiers. Extending bandwidth beyond C-band with ultra-wideband (UWB) amplification schemes is a promising way scale wavelength division multiplexed (WDM) throughput such single-span systems. this paper, we report on use semiconductor amplifiers (SOAs) combined distributed Raman pumping enable 100 nm transmissions over 257.5 km ultra...