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.
Few-mode multi-core fiber systems tend to be more prone to core misalignments at splice points. By using the true vector modes of few-mode waveguides we analyze how waveguide properties affect the shape of coupling and mode-dependent loss distributions due to alignment errors between waveguides.
We describe experiments combining high core-count, homogeneous single-mode multi-core fibers with a wideband comb for high-capacity transmission without high-order MIMO reception and demonstrate wideband transmission with coded modulation up to 12,300 km.
We address the interplay between Raman nonlinearity and crosstalk on a multicore fiber transmitting a 80 nm WDM signal spanning across C+L bands. We show a 0.1 dB/THz increase of crosstalk tilt due to Raman fiber nonlinearity.
We report simultaneous dynamic inter-core skew measurements between 7 cores of several homogeneous MCFs. The largest variation was 4.33 picoseconds for 31km span with diminishing influence of mechanical vibrations, temperature, core-layout and wavelength observed.
We review progress on high-capacity multi-core fiber systems based on homogeneous, single mode MCF and focus on the limits of high capacity transmission. We discuss issues of inter-core crosstalk, dynamic inter-core skew and their impact on multi-core fiber systems such as pilot-tone transmission and high-dimensional modulation formats. We summarize existing work and include some new results about...
We investigate the impact of intercore crosstalk on the achievable transmission distance of three square quadrature amplitude modulation (QAM) formats. We show that increasing intercore crosstalk across an 18 dB range starting from −43.4 dB/100 km reduces the achievable transmission distance for all formats, with a greater impact on higher order modulation formats. For a crosstalk level arising from...
We investigate the transmission distance of three QAM modulation formats, in the presence of inter-core crosstalk in a 7-core fiber. We show that crosstalk limits transmission distance for all formats with a greater impact on higher order modulation formats. For a crosstalk level equivalent to equal signal launch power in each core, we measure a reduced transmission distance at BER=1.5×10−2 of 17%,...
We use a wideband optical comb source with 10THz bandwidth for 2.15 Pb/s transmission over 31km of a new, homogeneous 22-core single-mode multi-core fiber using 399 × 25GHz spaced, 6.468 Tb/s spatial-super-channels comprising 24.5GBaud PDM-64QAM modulation in each core.
We describe the design and characterization of a 3-type heterogeneous 36-core, 3-mode fiber with record spatial channel count and density and perform transmission measurements in all 108 spatial channels using 40×100GHz spaced 25GBaud DP-QPSK signals.
We propose and experimentally investigate a family of multi-dimensional modulation formats for multi-core-fibers. Such formats can have power or spectral efficiency advantages or lower symbol energies but implementation difficulties cause an OSNR penalty.
A reduction of up to 103 times in the carrier-phase estimation rate is demonstrated for self-homodyne, space-division multiplexed, PDM-QPSK systems. This enables a significant energy saving in receiver DSP for self-homodyne systems.
We demonstrate for the first time a fully integrated SDN-controlled bandwidth-flexible and programmable SDM optical network utilising sliceable self-homodyne spatial superchannels to support dynamic bandwidth and QoTprovisioning, infrastructure slicing and isolation.
We discuss the recent progress of space division multiplexed transmission using a 19-core fiber. We find that high core-number multi-core fibers can both enable large transmission capacity and potentially reduce system costs and power consumption.
We show on-demand multi-wavelength spectrum and space defragmentation in an SDM and elastic network with four programmable nodes and two multi-core fiber links. The combined approach is shown to reduce blocking and hardware requirements in small nodes.
We demonstrate a significant reduction of the required carrier-phase estimation rate for self-homodyne multi-core fiber systems by analyzing experimental data with implementation-constrained digital signal processing, which could enable an improvement on receiver energy consumption.
We demonstrate a 105.1Tb/s self-homodyne transmission system using low-cost DFB lasers with dynamic path length adjustment and reduced DSP requirement in a 19-core-fiber with each signal core carrying 125×25Gbaud QPSK signals on a 50GHz grid.
We have developed a 19-SDM transmission system consisting of a new low-crosstalk 19-core fiber and a prototype 19-core EDFA. The EDFA uses shared free-space optics to couple pump light into cores and thus is SDM transparent. Recirculating loop experiment with PDM-QPSK signals shows the system feasibility for long-haul transmission over 900 km.
An in-service path length alignment subsystem for phase noise cancellation in self-homodyne coherent detection systems is proposed and demonstrated for spatial division multiplexing multi-core fiber links. Sub-centimeter resolution is demonstrated with penalties below 0.5dB.
We investigate transmission penalties in a high capacity self-homodyne coherent detection system using a 19-core fiber. We show small implementation penalties of under 0.5dB and linewidth independence that may enable transmission of high-order modulation formats.
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.