Zobrazeno 1 - 10
of 41
pro vyhledávání: '"A N, Rozental'"'
Autor:
Valery N. Rozental, Darli A. A. Mello
Publikováno v:
IEEE Photonics Journal, Vol 7, Iss 2, Pp 1-9 (2015)
We propose a set of techniques to enable hitless rate switching for reconfigurable optical systems and validate, by computer simulations, their applicability to NRZ, RZ, and Nyquist pulse shapes. The polarization-multiplexed quadrature phase-shift ke
Externí odkaz:
https://doaj.org/article/57e7ac90ae8743c1846b1d2b3863c797
Publikováno v:
Geng, Z, Kong, D, Rozental, V, Lowery, A J & Corcoran, B 2019, ' Optical sampling to enhance Nyquist-shaped signal detection under limited receiver bandwidth ', Optics Express, vol. 27, no. 17, pp. 24007-24017 . https://doi.org/10.1364/OE.27.024007
Insufficient receiver bandwidth destroys the orthogonality of Nyquist-shaped pulses, generating inter-symbol interference (ISI). We propose using an optical pre-sampler to alleviate the requirement on the receiver bandwidth through pulse re-shaping.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b0ffb1450d94ae8d91d898908aa804b0
https://pubmed.ncbi.nlm.nih.gov/31510296
https://pubmed.ncbi.nlm.nih.gov/31510296
Autor:
Victor E. S. Parayba, Juliano R. F. Oliveira, Andre L. N. Souza, Sandro M. Rossi, Andrea Chiuchiarelli, Valery N. Rozental, Jacklyn D. Reis, Stenio M. Ranzini
Publikováno v:
IEEE Photonics Technology Letters. 28:2589-2592
We experimentally investigate, in a 20×56-GBd 400 G WDM transmission system, different approaches for nonlinear compensation in spectrally sliced optical receivers with MIMO-based signal reconstruction. Slice-by-slice nonlinear compensation shows co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2a437d7dc2a93f6fe07dd2109434c398
https://doi.org/10.1109/lpt.2016.2606321
https://doi.org/10.1109/lpt.2016.2606321
Autor:
Juliano R. F. Oliveira, João C. S. S. Januário, Andre L. N. Souza, Sandro M. Rossi, Jacklyn D. Reis, Stenio M. Ranzini, Victor E. Parahyba, Valery N. Rozental, Aldário C. Bordonalli
Publikováno v:
IEEE Photonics Technology Letters. 28:2289-2292
We demonstrate unrepeatered transmission of $10\times 400$ -Gb/s PM-16QAM Nyquist wavelength-division multiplexing (WDM) dual-carrier superchannels (75-GHz flexigrid) at the $\text {SE} = 5.33$ b/s/Hz, where each superchannel is coherently detected b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::679cc06135c43773895bf6ecc33e48f9
https://doi.org/10.1109/lpt.2016.2592098
https://doi.org/10.1109/lpt.2016.2592098
Publikováno v:
IEEE Photonics Journal, Vol 5, Iss 4, Pp 7901608-7901608 (2013)
We experimentally investigate the performance of the signal power autocorrelation-based method for chromatic dispersion (CD) estimation in a polarization-multiplexing quadrature phase-shift keying (PM-QPSK) 100G coherent optical system conveying opti
Externí odkaz:
https://doaj.org/article/f6b3c5a97483448daea5aa8127f29377
Autor:
Darli A. A. Mello, Juliano R. F. Oliveira, Valery N. Rozental, Tiago C. Lima, Jacklyn D. Reis, Sandro M. Rossi, Andrea Chiuchiarelli
Publikováno v:
IEEE Photonics Technology Letters. 28:505-508
We propose and experimentally validate a novel synchronous symbol rate switching method for digitally shaped optical signals, based on synchronized transmit- and receive-side interpolators. We show that a gradually performed rate adjustment in small
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::781e9b71b221dbb34b171bdf0a8b61dd
https://doi.org/10.1109/lpt.2015.2500500
https://doi.org/10.1109/lpt.2015.2500500
Publikováno v:
Rozental, V, Kong, D, Corcoran, B, Mello, D A A & Lowery, A J 2018, ' Filtered Carrier Phase Estimator for High-Order QAM Optical Systems ', Journal of Lightwave Technology, vol. 36, no. 14, pp. 2980-2993 . https://doi.org/10.1109/JLT.2018.2829153
We investigate, using Monte Carlo simulations, the performance characteristics and limits of a low-complexity filtered carrier phase estimator (F-CPE) in terms of cycle-slip occurrences and signal to noise ratio (SNR) penalties. In this work, the F-C
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c363b8b75ca4bbd9e72dc5e2743fdb66
https://orbit.dtu.dk/en/publications/2685cd9e-e1c2-46c2-aa25-ccda95a010ba
https://orbit.dtu.dk/en/publications/2685cd9e-e1c2-46c2-aa25-ccda95a010ba
Autor:
Darli A. A. Mello, Valery N. Rozental
Publikováno v:
IEEE Photonics Journal, Vol 7, Iss 2, Pp 1-9 (2015)
We propose a set of techniques to enable hitless rate switching for reconfigurable optical systems and validate, by computer simulations, their applicability to NRZ, RZ, and Nyquist pulse shapes. The polarization-multiplexed quadrature phase-shift ke
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8cea75f0bb8cfa9138281b31c6f188e2
https://ieeexplore.ieee.org/document/7078864/
https://ieeexplore.ieee.org/document/7078864/
Publikováno v:
Optics letters. 42(21)
We propose and experimentally demonstrate an all-optical digital-to-analog converter based on cross-phase modulation with temporal integration. The scheme is robust for driving signal noise due to the low-pass filtering feature of the temporal integr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f5a3310e3cd9adb40515eab89207a2b9
https://pubmed.ncbi.nlm.nih.gov/29088210
https://pubmed.ncbi.nlm.nih.gov/29088210
Publikováno v:
Optics letters. 42(18)
We propose and experimentally validate a blind phase recovery algorithm based on tracking low-frequency components of the phase noise, which we call “filtered carrier-phase estimation (F-CPE).” Tracking only the low-frequency components allows F-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2aa987c831c70537ae75a4f980691224
https://pubmed.ncbi.nlm.nih.gov/28914900
https://pubmed.ncbi.nlm.nih.gov/28914900