A5048220151- Optical Network Technologies
- Photonic and Optical Devices
- Advanced Photonic Communication Systems
- Semiconductor Lasers and Optical Devices
- Advanced Optical Network Technologies
- Advanced Fiber Laser Technologies
- Semiconductor Quantum Structures and Devices
- Advanced Fiber Optic Sensors
- Photonic Crystal and Fiber Optics
- Quantum optics and atomic interactions
- Laser-Matter Interactions and Applications
- Advancements in PLL and VCO Technologies
- Spectroscopy and Laser Applications
- Blind Source Separation Techniques
- Neural Networks and Reservoir Computing
- Laser Design and Applications
- Radio Frequency Integrated Circuit Design
- Nanowire Synthesis and Applications
- Analytical Chemistry and Sensors
- Spectroscopy Techniques in Biomedical and Chemical Research
- Optical Coherence Tomography Applications
- Optical Wireless Communication Technologies
- Chemistry and Stereochemistry Studies
- Error Correcting Code Techniques
- Spectroscopy and Quantum Chemical Studies
Nokia (United States)
2007-2017
CEA LETI
2011
Commissariat à l'Énergie Atomique et aux Énergies Alternatives
2011
Network Technologies (United States)
2010
Alcatel Lucent (Germany)
1988-2008
University of California, San Diego
2008
Sumitomo Electric Industries (United States)
2007
AT&T (United States)
1996-2006
Proteogenomics Research Institute for Systems Medicine
1994
ExxonMobil (United States)
1980-1982
We report simultaneous transmission of six spatial and polarization modes, each carrying 40 Gb/s quadrature-phase-shift-keyed channels over 96 km a low-differential group delay few-mode fiber. The are successfully recovered by offline DSP based on coherent detection multiple-input multiple-output processing. A penalty <formula formulatype="inline" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"><tex Notation="TeX">${<}1.2$</tex> </formula> dB is...
Differential-phase-shift keying (DPSK) has recently been used to reach record distances in long-haul lightwave communication systems. This paper will review theoretical, as well implementation, aspects of DPSK, and discuss experimental results.
Mode-division multiplexing over 33-km few-mode fiber is investigated. It shown that 6×6 MIMO processing can be used to almost completely compensate for crosstalk and intersymbol interference due mode coupling in a system transmits uncorrelated 28-GBaud QPSK signals on the six spatial polarization modes supported by novel fiber.
The trend toward higher bit rates in lightwave communications has increased interest dispersion-shifted fiber to minimize dispersion penalties. At the same time optical amplifiers have wavelength multiplexing. These two methods of increasing system capacity, if used together, can result severe degradation due nonlinearity. This paper discusses impact principal nonlinearity, four-photon mixing, and describes strategies that allow simultaneous use high WDM.< <ETX...
We discuss the generation, wavelength-division-multiplexed (WDM) long-haul transmission, and coherent detection of 112-Gb/s polarization-division-multiplexed (PDM) 16-ary quadrature amplitude modulation (16-QAM) at a line rate 14 Gbaud spectral efficiencies beyond 4 b/s/Hz. describe (off-line) digital signal processing blind filter adaptation algorithms used in our intradyne receiver characterize its performance using both simulated measured 16-QAM waveforms. measure required optical...
We demonstrate the transmission of 6 independent, spatially- and polarization multiplexed 28-Gb/s QPSK signals over 10 km three-mode fiber using mode-selective excitation full coherent × MIMO processing.
We report 2.5 Tb/s (64 /spl times/ 42.7-Gb/s) WDM transmission over 4000 km (forty 100-km spans) of non-zero dispersion-shifted fiber. This capacity distance record 10 petabit-km/s for 40-Gb/s systems is achieved in a single 53-nm extended L band using return-to-zero differential-phase-shift-keyed modulation, balanced detection, and distributed Raman amplification.
It is known that amplitude fluctuations caused by amplified spontaneous emission noise can be converted into phase Kerr nonlinearity, and this nonlinear limit the performance of phase-shift-keying transmission systems. In letter, we experimentally observe study degradation differential systems due to noise. order clearly effect, intentionally add ASE DPSK signal at transmitter, then transmit over a 600-km nonzero dispersion-shifted fiber (NZDSF) link. The results show probability density...
Recently, the bandwidths of semiconductor lasers, detectors, and optical transmission systems have been dramatically increased. The considerations used to achieve a record 26.5 GHz bandwidth in 1.3 μm InGaAsP laser at -60°C are described here. small-signal modulation characteristics number different structures compared. Several large-signal experiments with emphasis on response 8 Gbit/s modulation.
Using a unique Ti:LiNbO/sub 3/ modulator, the value of modulation chirp parameter that minimizes transmission power penalty caused by fiber chromatic dispersion was experimentally identified. System experiments at 5 Gb/s using nonreturn-to-zero (NRZ) amplitude-shift-keyed (ASK) with direct detection reception are discussed, and optimum values versus distance for 1.5 mu m wavelength over fibre having zero 1.3 NRZ achieved through distances 128, 192, 256 km conventional while incurring...
We quantify, through simulations and experiments at 21.4 GBaud, the effect of in-band crosstalk on several advanced optical modulation formats, showing a 1-dB penalty bit-error ratio 1×10−3 from −18 dB, −24 −32 dB for QPSK, 16-QAM, 64-QAM, respectively.
We experimentally demonstrate nondegenerate four-wave mixing (FWM) between waves belonging to different spatial modes of a 5-km-long few-mode fiber (FMF). Of the three inter-modal FWM (IM-FWM) processes possible, two have been observed. These IM-FWM are found be phase-matched over very large frequency separations several Terahertz waves. In contrast in single-mode fibers that require operating near zero-dispersion wavelength achieve phase matching, FMF can fully matched presence chromatic...
We demonstrate record 25.6-Tb/s transmission over 240 km using 160 WDM channels on a 50-GHz grid in the C+L bands. Each channel contains two polarization-multiplexed 85.4-Gb/s RZ-DQPSK signals, yielding spectral efficiency of 3.2b/s/Hz each band.
We propose a novel coherent optical orthogonal frequency-division multiplexing (CO-OFDM) scheme with reduced guard interval (RGI) for high-speed high-spectral-efficiency long-haul transmission. In this scheme, fiber chromatic dispersion is compensated within the receiver rather than being accommodated by (GI) as in conventional CO-OFDM, thereby reducing needed GI, especially when large. demonstrate generation of 448-Gb/s RGI-CO-OFDM signal 16-QAM subcarrier modulation through band...
We discuss the generation, wavelength-division-multiplexed (WDM) long-haul transmission, and coherent detection of 224-Gb/s polarization-division-multiplexed (PDM) 16-ary quadrature amplitude modulation (16-QAM) at a line rate 28 Gbaud. measure required optical signal-to-noise ratio 23.4 dB (0.1-nm reference bandwidth; 10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">-3</sup> bit-error ratio), 3.4-dB off theoretical limit. Using...
We experimentally demonstrate multiple-input-multiple-output transmission of a combined 3-space-, and 2-polarization-, 5-wavelength-division multiplex in 3-core microstructured fiber over 4200 km. This is the record distance for spatial-division multiplexing fiber.
We transmit 32 WDM channels over 12 spatial and polarization modes of 177 km few-mode fiber at a record spectral efficiency bit/s/Hz. The transmitted signals are strongly coupled recovered using 12×12 multiple-input multiple-output digital signal processing.
We present experimental results for combined modemultiplexed and wavelength multiplexed transmission over conventional graded-index multimode fibers.We use mode-selective photonic lanterns as mode couplers to precisely excite a subset of the modes fiber additionally compensate differential group delay between excited modes.Spatial filters are added suppress undesired higher order modes.We transmit 30-Gbaud QPSK signals 60 WDM channels, 3 spatial modes, 2 polarizations, reaching distance 310...
Recent theoretical work on coherent optical detection systems is reviewed and experimental results in high-speed transmission are summarized. The advantages limitations of the various modulation formats discussed progress towards implementation these reviewed. most significant obstacles to attainment quantum-noise limited at higher speeds seen be requirement uniform frequency response from electronic components local oscillator laser power requirement, which increases as square bit rate. To...
A broadband (>50 nm) wavelength shifter capable of switching multigigabit data between optical frequencies in the 1.5 μm region is presented. The device, based on gain saturation a semiconductor amplifier, tunable, has gain, and nearly polarisation insensitive. Data degradation after shifting negligible.
We discuss the generation, detection, and long-haul transmission of single-polarization differential quadrature phase shift keying (DQPSK) signals at a line rate 53.5 Gbaud to support net information bit 100 Gb/s. In laboratory, we demonstrate 10-channel wavelength-division multiplexed (WDM) point-to-point over 2000 km on 150-GHz WDM grid, 1200-km optically routed networking including 6 reconfigurable optical add/drop multiplexers (ROADMs) 100-GHz grid. then report commercial, 50-GHz spaced...
The 25 years since the founding of Journal Lightwave Technology have seen more than three orders magnitude increase in capacity optical transmission systems. This dramatic was brought about by deployment WDM and advances high-speed technologies.
We generate 56-Gbaud PDM 16-QAM using electronic time-division multiplexing (ETDM) and a four-level-driven I/Q modulator. The 448-Gb/s line-rate signal is transmitted over 1,200 km of ultra-large-area fiber coherently received by two 32.5-GHz oscilloscopes with >5.5 effective bits.
Low differential group delay (DGD) between the modes of a graded-index few-mode fiber is obtained by combining segments with DGD opposite sign. Transmission mode-multiplexed 6×20-GBd QPSK over record distance 1200 km demonstrated.
We demonstrate a single-ended colorless coherent receiver using symmetric 3x3 couplers for optical hybrids. show that the can achieve reception of fifty-five 112-Gb/s polarization-division-multiplexed quadrature-phase-shift-keyed (PDM-QPSK) channels with less than 1-dB penalty in back-to-back operation. The also works well long-haul wavelength-division-multiplexed (WDM) transmission system over 2560-km TrueWave® REACH fiber.