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A single-transmitter/single-receiver THz link (0.3–0.5 THz) with a record net data rate of 260 Gbit/s is experimentally demonstrated. Spectrally efficient multi-channel signal transmission is enabled by a novel frequency-band-allocation scheme with pre-and-post-digital equalization.
We have generated a phase-correlated 160 GBaud NRZ-like DPSK signal based on XPM in a HNLF. The generated 160 GBaud DPSK signal is Nyquist filtered with minimized ISI and error-free performance is achieved.
We experimentally demonstrate self-phase modulation based all-optical regeneration of a 40 Gbit/s serial data signal in a silicon nanowire. Bit error rate characterization shows 2 dB receiver power improvement.
To ensure that ultra-high-speed serial data signals can be utilised in future optical communication networks, it is indispensable to have all-optical signal processing elements at our disposal. In this paper, the most recent advances in our use of non-linear materials incorporated in different function blocks for high-speed signal processing are reviewed.
An asynchronous 10G Ethernet packet is synchronized and retimed to a master clock using a time lens. The NRZ packet is converted into an RZ packet and multiplexed with a serial 1.28 Tb/s signal.
We demonstrate 1 × 4 optical-packet switching with error-free transmission of 640 Gb/s single-wavelength OTDM data-packets including instantaneous clock extraction and short pulse generation for optical time-demultiplexing based on a cavity-less pulse source.
We demonstrate a 10 GHz 680 fs pulse source tunable over the C-band, based on a CW laser, 10-GHz LiNb03-modulators and fibre-based SPM compressors. The pulses are used to generate error-free 640 Gbit/s OTDM data.
This paper reviews our recent advances in ultra-high-speed serial optical communications. It describes Tbit/s optical signal processing and various materials allowing for this, as well as network scenarios embracing this technology.
We describe methods to generate and optically signal process Tbaud serial optical data signals. We present sub-systems making serial optical Tbit/s systems compatible with standard Ethernet data for data centre applications, and present Tbit/s results using a.o. silicon nanowires.
This paper demonstrates the first transmission of a 1.28 Tbaud data signal. The transmission link is a 50-km dispersion managed fibre consisting of super large area fibre and inverse dispersion fibre. Error-free performance (BER<;10-9) is achieved after transmission.
In this paper, we review emerging technologies to build up Tb/s per channel transmission capacity. The different approaches, mainly based on various implementations of orthogonal frequency division multiplexing, Nyquist wavelength division multiplexing and optical time division multiplexing, are introduced and compared with respect to complexity, spectral efficiency and transmission reach. In addition...
Synchronization of 10 G Ethernet packets to a local clock was demonstrated using a phase modulator and a SMF as retiming elements. Error free performances for the synchronized packets with different lengths were achieved.
We propose chip-based Tbaud processing for all-optical performance monitoring, switching and demultiplexing. We demonstrate the first transmitter optimization and receiver-end demultiplexing of 1.28 Tbit/s OOK signals. Both exploited Kerr nonlinearity in dispersion-engineered As2S3 planar waveguide.
Error free low penalty 650 Gbit/s OTDM transmission is demonstrated using a polarisation independent receiver based on FWM for demultiplexing. Spectral shaping in the transmitter and filtering in the receiver are used for clock extraction.
We report on an experimental demonstration of a 1.28 Tbit/s serial data generation and demultiplexing and discuss the prospects of upgrading other essential functionalities to 1.28 Tbit/s.
Polarisation-insensitive 640 Gbit/s demultiplexing is demonstrated using a 100 m polarisation-maintaining highly non-linear fibre. Error-free performance is achieved with only 0.2 dB polarisation dependence.
We demonstrate error free, low-penalty demultiplexing of a 640 Gbit/s OTDM signal to 10 Gbit/s using a 5 cm long chalcogenide planar waveguide chip. Our approach exploits four-wave mixing by the instantaneous nonlinear response of chalcogenide.
We report on the use of a novel all-fiber flat-top pulse shaping technique for improving performance and timing jitter tolerance of a switch made for 640-10 Gb/s signal demultiplexing. The jitter tolerance is increased to almost 30% of the one-bit time window, and an increase of the receiver sensitivity by 13 dB compared to a nonflat-top pulse is reported.
We demonstrate transmission of 16 WDM channels at 10 Gbit/s with 50 GHz channel spacing over 3 times 80 km NZDSF, with small OSNR penalty, using only a single Raman-pumped dispersion compensating module positioned before the receiver.
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