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An approach to deal with the demand for increasing bandwidth and data rates from the network is to deploy an ultra-high density access network consisting of a large number of very small cells. In such a wireless network, reducing interference will contribute to meeting the targeted very-high bitrates and low latency. In this study, we evaluated the signal-to-interference ratio in an ultra-high density...
We demonstrate single-wavelength, serial and real-time 100 Gb/s NRZ-OOK transmission over 500 m SSMF with a GeSi EAM implemented on a silicon photonics platform. The device was driven with 2 Vpp without 50 Ω termination, allowing a low-complexity solution for 400 GbE short-reach optical interconnects.
Recent advances in integrated opto-electronic devices and front end circuits have made it possible to efficiently transmit very high data rates over optical links for HPC/datacenter applications. This paper reviews our current progress towards serial 100-Gb/s optical interconnects, with emphasis on electrical duobinary (EDB) modulation.
100 Gbit/s three-level (50 Gbit/s OOK) signals are generated using a silicon-organic hybrid modulator and a BiCMOS duobinary driver IC at a BER of 8.5×10−5(<10−2). We demonstrate dispersion-compensated transmission over 5 km.
We demonstrate the first real-time, serial 100 Gb/s NRZ-OOK transmission with an integrated GeSi EAM implemented on a silicon photonics platform. Transmission over 500m of SSMF and 2 km of dispersion shifted fiber is presented.
In this work we characterize the RF modulation characteristics and the dynamic range of a III-V-on-Silicon DFB laser. The direct modulation of this laser is demonstrated with a 1Gbps radio-over-fiber link at a carrier frequency up to 24 GHz using QPSK modulation. 480Mbps 64-QAM transmission at 3.5 GHz carrier frequency is demonstrated as well. In the 480 Mbps experiment both the transmitter and receiver...
This paper presents a new long reach PON (LR-PON) scenario operating at a single carrier of 40-Gbit/s for downstream, as an upgrade option of the LR-PON evolutionary strategy. An electrical 3-level duobinary modulation format was proposed for the 40-Gbit/s downstream transmission. In this paper the required optical signal to noise ratio (OSNR) and optical power budget were investigated based on analytic...
High-speed electronic integrated circuits are essential to the development of new fiber-optic communication systems. Close integration and co-design of photonic and electronic devices are becoming more and more a necessity to realize the best performance trade-offs. This paper presents our most recent results and a brief introduction to our research in recently started EU projects.
An ultra-low power SiGe BiCMOS IC for driving a 10 channel EAM array at 113 Gb/s is presented for WDM-PON applications. The driver array consumes only 2.2 W or 220 mW per channel, 50% below the state of the art.
Accurate indoor positioning is very challenging. At this time, no solutions exist that can offer accurate distance measurements over large ranges. In this paper, we present a novel ranging technique. It offers sub-meter accuracy in indoor environments and can maintain this accuracy over hundreds of meters. Currently, this ranging technique has been demonstrated with a dedicated PCB implementation...
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