Zobrazeno 1 - 6
of 6
pro vyhledávání: '"Seemant Choudhary"'
Publikováno v:
Journal of Lightwave Technology. 20:1989-1996
Three modulation formats are compared by numerical simulation of highly dense (75-GHz-spaced for 40 Gb/s channel), long-haul (600-1800 km) wavelength division multiplexed systems with three fiber types. Nonreturn-to-zero (NRZ) format, being the most
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eed18d3b4ad5975587071255c7b48688
https://doi.org/10.1109/jlt.2002.806761
https://doi.org/10.1109/jlt.2002.806761
Publikováno v:
OFC 2003 Optical Fiber Communications Conference, 2003..
We propose a method employing 86 Gbit/s RZ-DQPSK format to enable doubling the capacity of 43 Gbit/s WDM systems. Its relaxed OSNR, chromatic dispersion and PMD requirements allow the upgrade without changing WDM optics, using 43 Gbit/s electronics.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c065f9dcb940b39afabc0bb80901683c
https://doi.org/10.1109/ofc.2003.315951
https://doi.org/10.1109/ofc.2003.315951
Publikováno v:
Optical Amplifiers and Their Applications.
Waveform distortion in forward-pumped Raman amplifiers with dynamic pump depletion is numerically studied. The RZ-DPSK format, which shows 17 dB higher tolerance than the NRZ format to the forward Raman gain, provides significant flexibility in syste
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::04830065a1108cc5e084ee225fc1a16f
https://doi.org/10.1364/oaa.2003.ma2
https://doi.org/10.1364/oaa.2003.ma2
Publikováno v:
Scopus-Elsevier
The impact of WDM filter characteristics on 40 Gbit/s signals with various channel spacing is investigated for NRZ, CS-RZ, and RZ modulation formats. The basic limitations imposed by channel spacing, slope, detuning, and cascade of filters are presen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f06af1b74517e6f72d620ea0d623b3e5
https://doi.org/10.1109/ecoc.2001.989431
https://doi.org/10.1109/ecoc.2001.989431
Autor:
T. Terahara, Hideo Kuwahara, Seemant Choudhary, Takeshi Hoshida, Olga Vassilieva, Gerardo Castanon, Hiroshi Onaka
Publikováno v:
LEOS 2001. 14th Annual Meeting of the IEEE Lasers and Electro-Optics Society (Cat. No.01CH37242).
We have compared by numerical simulations the performance of NRZ, CS-RZ and IM-DPSK modulation formats for 480 km of 40 channels WDM transmission with SMF and NZ-DSF fibers. IM-DPSK has shown the best tolerance to non-linear effects and dispersion fo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aa7932b37ec0c3016bd631cd3948cac4
https://doi.org/10.1109/leos.2001.968993
https://doi.org/10.1109/leos.2001.968993
Autor:
Takeshi Hoshida, Seemant Choudhary
Publikováno v:
Optical Amplifiers and Their Applications.
Mechanisms and impact of signal degradation in Raman amplifier with co-propagating pump is investigated. The eye penalty induced by two distinct mechanisms can be significant so that appropriate selection of signal and pump wavelengths are necessary.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9ff37f1af15a33ea646ae38d8967501d
https://doi.org/10.1364/oaa.2002.otua4
https://doi.org/10.1364/oaa.2002.otua4