The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
We achieve transoceanic distance transmission with 350–390 Gb/s 64APSK coded modulation channels and explore the benefit of nonlinearity compensation with subcarrier multiplexing. Estimated total capacity with variable spectral efficiency is 66.8 Tb/s.
We will discuss transmission technologies facilitated progress in recent capacity demonstrations over the transoceanic length distances and review the results of laboratory experiments. Discussion will include broad-bandwidth amplification, coded modulation, SDM, and importance of system power efficiency and ways to improve it.
We transmit CM DP-16QAM signals at 4.88 b/s/Hz SE in C+L band EDFAs. We demonstrate nonlinearity noise mitigation by MAP-LMS equalizer. We show 2 dB error-correction margin improvement over DP-8QAM after 6,673 km transmission.
We demonstrate the use of MCF for power efficient ultra-high capacity long haul transmission. Feasibility of 105.1 Tb/s transmission over 14,350 km is shown using 12-core fiber and power equivalent of a single pump laser.
We will review recent record transoceanic length transmission demonstrations and discuss techniques that facilitated capacity improvements in laboratory experiments. In particular, transmission using coded modulation and broad-bandwidth amplification will be discussed.
We demonstrate 100Gb/s 8D coded modulation transmission over 9,750 km with record high power efficiency as defined by the ratio of capacity-distance product to the total amplifier output power.
We propose a transponder-independent metric that can uniquely describe the performance of dispersion uncompensated links. Derived from OSNR and performance measurements using an available transponder, it can be used for performance prediction of any other transponder on the optical path.
We achieve 63.5 Tb/s transmission over 5,380 km and 61.9 Tb/s over 5,920 km using 64QAM based coded modulation and continuous 73 nm optical bandwidth. 7.1 b/s/Hz spectral efficiency is achieved with 2.2 dBQ error correction threshold.
Using optimized hybrid Raman-EDFAs and coded modulation with variable spectral efficiency we achieve 54 Tb/s capacity over 9,150 km transmission. We also achieve a capacity-distance product of 534 Pb/s∗km after 10,230 km distance.
We transmit 106 × 200 Gb/s channels over 10 290 km at 6.0 b/s/Hz enabled by Nyquist spectral shaping and digital back propagation (DBP). 53 × 400 Gb/s channels are also transmitted over 9200 km detecting two 200 Gb/s wavelengths simultaneously using a wideband receiver. DBP benefit versus channel pre-emphasis, average launch power per channel, and transmission distance are experimentally investigated...
This paper reviews recent advances in transoceanic distance transmission technology including digital spectral shaping, coded modulation, variable spectral efficiency, and nonlinearity compensation to facilitate higher capacity and higher spectral efficiency.
We experimentally study the performance of coded-modulation formats based on Nyquist-spectrally-shaped mQAM constellations with spectral efficiencies from 2.4 to 8.0 bits/s/Hz, and demonstrate that the relative performance in uncompensated links depends only on their respective OSNR sensitivity.
We transmit 49.3 Tb/s over 9,100 km using 282 16QAM coded modulation channels with spectral efficiency matched to the transmission system's spectral performance. The 81×162 Gb/s and 201x180 Gb/s channels operate at constant symbol rate and channel spacing.
We transmit 441×100 Gb/s signals in 9 THz of optical bandwidth over 9,100 km at a SE of 493% and a bitrate-distance product >400 Pb/s∗km. Our 60% overhead coded modulation format achieves a 3.35 dBQ error correction threshold at an OSNR that is within 2.5 dB of the Shannon limit for the targeted SE. All channels are decoded with no errors.
We experimentally investigate digital back propagation (DBP) benefit versus channel pre-emphasis, average launch power per channel, and transmission distance. We find the DBP benefit scales monotonically with channel power and transmission distance. Measurement results match well with theory.
We transmit 30.58 Tb/s data (294×104 Gb/s) over 7,230 km in 40 nm bandwidth with 6.1 b/s/Hz spectral efficiency. We use PDM half-4D-16QAM coded modulation to achieve the highest reported capacity-distance product of 221 Pb/s·km.
We experimentally measured nonlinear noise induced by broadband FWM over different power levels, system lengths, and transmission bandwidths in dispersion uncompensated systems. We confirmed that broadband FWM induced noise is proportional to PSD3, L1, and Log(BW).
We experimentally and numerically investigate the impact of nonlinear interaction between signal and ASE in coherent transmission systems. We show that dispersion management of the transmission path significantly increases penalties caused by signal-ASE interaction.
We experimentally and analytically demonstrate the effect of broad-band four-wave mixing (FWM) on system optimization. We show that broadband FWM changes the behavior of systems such as performance vs. OSNR and bandwidth.
We transmit 106×200 Gb/s channels over 10,290 km at 6.0 b/s/Hz enabled by Nyquist spectral shaping and nonlinearity compensation. We also transmit 53×400 Gb/s channels over 9,200 km detecting two 200 Gb/s wavelengths simultaneously using a wideband receiver.
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.