Zobrazeno 1 - 10
of 29
pro vyhledávání: '"Ekawit Tipsuwannakul"'
Publikováno v:
Journal of Lightwave Technology. 30:2307-2314
This paper, for the first time, experimentally presents direct comparisons of two 25 GHz spaced wavelength division multiplexing (WDM) systems using conventional dual-polarization (DP) 16-ary quadrature amplitude modulation and duobinary-shaped DP-qu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5f0a33873a38f32b1418ec89d76a104d
https://doi.org/10.1109/jlt.2012.2196976
https://doi.org/10.1109/jlt.2012.2196976
Publikováno v:
Journal of Lightwave Technology. 30:1664-1676
A novel low-complexity coherent receiver solution is presented to improve spectral efficiency in wavelength-division multiplexing (WDM) systems. It is based on the receiver-side partial-response equalization and maximum-likelihood sequence detection
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::04f43dcc34ce446c7b111ded021835fd
https://doi.org/10.1109/jlt.2012.2190972
https://doi.org/10.1109/jlt.2012.2190972
Autor:
Pontus Johannisson, Ekawit Tipsuwannakul, Mats Sköld, Erik Agrell, Magnus Karlsson, Peter A. Andrekson
Publikováno v:
Journal of Lightwave Technology. 29:2954-2962
This paper presents back-to-back and transmission performance comparisons between single-polarization 120 Gbit/s RZ-DQP-ASK and RZ-D8PSK formats in a single-wavelength system. In the back-to-back configuration, we determine the OSNR requirements of t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d3fafdb1d7c145b2923cb381f18ca4ba
https://doi.org/10.1109/jlt.2011.2163495
https://doi.org/10.1109/jlt.2011.2163495
Autor:
T. Miyazaki, Magnus Karlsson, Peter A. Andrekson, Guo-Wei Lu, Ekawit Tipsuwannakul, Carl Lundstrom
Publikováno v:
Journal of Lightwave Technology. 29:2460-2466
An optical format conversion scheme of multilevel phase-shift keying (M-ary PSK) signals using the four-wave mixing based optical phase erasure is discussed in this paper. The conversion from differential quadrature phase-shift keying (DQPSK) to diff
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5826e7db1f3638b80fe969ae5dde51ff
https://doi.org/10.1109/jlt.2011.2160977
https://doi.org/10.1109/jlt.2011.2160977
Autor:
Ekawit Tipsuwannakul, Peter A. Andrekson, Benjamin J. Puttnam, Carl Lundstrom, Zhi Tong, Lars Gruner-Nielsen, Daniel Blessing, Magnus Karlsson, Colin J. McKinstrie, Hiroyuki Toda
Publikováno v:
Nature Photonics. 5:430-436
Optical phase-sensitive amplifiers (PSAs) are known to be capable, in principle, of realizing noiseless amplification and improving the signal-to-noise-ratio of optical links by 3 dB compared to conventional, phase-insensitively amplified links. Howe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f0c38524865aca66b62d0d455342f528
https://doi.org/10.1038/nphoton.2011.79
https://doi.org/10.1038/nphoton.2011.79
Publikováno v:
IEEE Photonics Technology Letters. 22:1376-1378
The letter discusses the tolerance against transmission impairments, i.e., chromatic dispersion, filtering, and self-phase modulation over a 320-km transmission link of 40-Gbaud single-polarization return-to-zero (RZ) eight-level differential phase-s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cd580c03bff2d86d89b6c70078653358
https://doi.org/10.1109/lpt.2010.2057504
https://doi.org/10.1109/lpt.2010.2057504
Publikováno v:
IEEE Photonics Technology Letters. 22:802-804
Using the self-homodyne detection scheme, it is possible to compensate for the nonlinear phase distortion that, if left uncompensated, would distort the received constellation diagram. The suggested compensation method is evaluated using numerical si
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eff9645ba74499f4bc75097a4b123d9c
https://doi.org/10.1109/lpt.2010.2046156
https://doi.org/10.1109/lpt.2010.2046156
Publikováno v:
IEEE Photonics Technology Letters. 21:1680-1682
We have, for the first time, experimentally investigated 112-Gb/s polarization-multiplexed return-to-zero differential 8-ary phase-shift keying (PM-RZ-D8PSK) with differential detection in terms of optical signal-to-noise ratio requirement, group vel
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::26dca34a79898d7bd004e51e68e5a477
https://doi.org/10.1109/lpt.2009.2031623
https://doi.org/10.1109/lpt.2009.2031623
Autor:
Ekawit Tipsuwannakul, Bill Corcoran, Samuel L. I. Olsson, Magnus Karlsson, Andrew D. Ellis, Zhi Tong, Stylianos Sygletos, Peter A. Andrekson, Carl Lundstrom
Publikováno v:
Optics Express
Optics Express (1094-4087) vol.21(2013)
Optics Express (1094-4087) vol.21(2013)
An injection locking-based pump recovery system for phase-sensitive amplified links, capable of handling 40 dB effective span loss, is demonstrated. Measurements with 10 GBd DQPSK signals show penalty-free recovery of a pump wave, phase modulated wit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8c67100b57859e0450cebd35beb0ba96
Publikováno v:
European Conference and Exhibition on Optical Communication.
We experimentally investigated a superchannel consisting of 25 GHz spaced interleaved 3×18.67 GBaud DP-QPSK and 3×18.67 GBaud DP-16QAM. We showed a 0.3 dB improvement in the Q-value averaged over the center two channels compared to an all DP-16QAM
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2d87bef57c1127f297fd2e1adb4b6cc2
https://doi.org/10.1364/eceoc.2012.p4.11
https://doi.org/10.1364/eceoc.2012.p4.11