Results 51 to 60 of about 32,711 (174)

Amplification technology for spatial division multiplexing signals transmitted using multicore fibres

open access: yesIET Optoelectronics, Volume 18, Issue 6, Page 179-187, December 2024.
Multicore (MC‐) erbium‐doped fibre amplifier (EDFA) architecture is classified from the viewpoint of the number of erbium‐doped fibre (EDF) cores and its pumping method. In particular, the advantages of cladding pumped MC‐EDFA are shown. Abstract Amplification technologies needed for spatial division multiplexing (SDM) signal transmission have been ...
Hitoshi Takeshita
wiley   +1 more source

Considering Transmission Impairments in Wavelength Routed Networks [PDF]

open access: yes, 2005
— We consider dynamically reconfigurable wavelength routed networks in which lightpaths carrying IP traffic are on demand established. We face the Routing and Wavelength Assignment problem considering as constraints the physical impairments that arise in
Cardillo, R.   +2 more
core   +2 more sources

An unsupervised coherent receiver digital signal processing algorithm based on spectral clustering with no data preamble

open access: yesIET Optoelectronics, Volume 18, Issue 5, Page 131-139, October 2024.
1. The data‐free guided coherent reception DSP algorithm proposed based on spectral clustering can effectively suppress a variety of physical damage and increase the system’s OSNR tolerance. 2. When the bit error rate is 1.9E‐2, the spectral clustering‐based data‐agnostic DSP solution extends the maximum transmission distance of a 14GBaud PM‐16QAM ...
Jianhua He   +3 more
wiley   +1 more source

Experimental Demonstration of Dual Polarization Nonlinear Frequency Division Multiplexed Optical Transmission System [PDF]

open access: yes, 2017
Multi-eigenvalues transmission with information encoded simultaneously in both orthogonal polarizations is experimentally demonstrated. Performance below the HD-FEC limit is demonstrated for 8-bits/symbol 1-GBd signals after transmission up to 207 km of ...
Da Ros, Francesco   +4 more
core   +2 more sources

Dispersion insensitive optical signal to noise ratio monitoring of PDM signal by using uncorrelated signal power.

open access: yesOptics Express, 2014
In this paper, we propose and demonstrate optical signal to noise ratio (OSNR) monitoring method for polarization-division-multiplexing (PDM) signal by using the uncorrelated signal power, which is generated by balanced subtraction in electrical domain ...
Yi Yu, Changyuan Yu
semanticscholar   +1 more source

Extreme Outages due to Polarization Mode Dispersion

open access: yes, 2003
We investigate the dependence of the bit-error-rate (BER) caused by amplifier noise in a linear optical fiber telecommunication system on the fiber birefringence.
Andresciani   +18 more
core   +1 more source

Optical signal to noise ratio improvement through unbalanced noise beating in phase-sensitive parametric amplifiers [PDF]

open access: yes, 2014
We investigate the beating of signal and idler waves, which have imbalanced signal to noise ratios, in a phase-sensitive parametric amplifier. Imbalanced signal to noise ratios are achieved in two ways; first by imbalanced noise loading; second by ...
Andrekson, Peter   +4 more
core   +1 more source

Integrated in-band optical signal-to-noise ratio monitor implemented on SOI platform.

open access: yesOptics Express, 2012
Based on different coherence properties of signal and noise, we measured the in-band optical signal-to-noise ratio using an integrated thermally tunable Mach-Zehnder optical delay interferometer on SOI platform.
L. Jia   +6 more
semanticscholar   +1 more source

A novel economical duty cycle division multiplexing with electrical multiplexer and demultiplexer for optical communication systems [PDF]

open access: yes, 2008
Duty cycle division multiplexing (DCDM) is proposed as an alternative multiplexing technique. In this technique, the channel multiplexing and demultiplexing are performed electrically.
Abas, Ahmad Fauzi   +4 more
core   +2 more sources

Simultaneous chromatic dispersion, polarization-mode-dispersion and OSNR monitoring at 40Gbit/s [PDF]

open access: yes, 2008
A novel method for independent and simultaneous monitoring of chromatic dispersion ( CD), first-order PMD and OSNR in 40Gbit/s systems is proposed and demonstrated.
Baker-Meflah, L   +3 more
core   +1 more source

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