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Gal Sasson and Yoed N. Kenett
Question-asking is a critical aspect of human communications. Yet, little is known about the reasons that lead people to ask questions, which questions are considered better than others, or what cognitive mechanisms allow the ability to ask informative q...
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Ahmad Abdo and Claude D?Amours
We propose an adaptive joint pre- and post-compensation to correct the filtering effects caused by cascading reconfigurable optical add drop multiplexers (ROADMs). The improvement is achieved without using additional hardware (HW) on the link or within t...
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Zhao Zhao, Aiying Yang, Peng Guo and Qingzhao Tan
In this work, we propose a combined method to implement both modulation format identification (MFI) and optical signal-to-noise ratio (OSNR) estimation, a method based on density-based spatial clustering of applications with a noise (DBSCAN) algorithm. T...
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Qiang Wang, Yang Yue, Jian Yao and Jon Anderson
Coherent in-phase quadrature (IQ) transponders are ubiquitous in the long-haul and the metro optical networks. During the transmission, the coherent signal experiences a bandwidth narrowing effect after passing through multiple reconfigurable optical add...
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Elias Giacoumidis, Yi Lin, Mutsam Jarajreh, Sean O?Duill, Kevin McGuinness, Paul F. Whelan and Liam P. Barry
Coherent fiber-optic communication systems are limited by the Kerr-induced nonlinearity. Benchmark optical and digital nonlinearity compensation techniques are typically complex and tackle deterministic-induced nonlinearities. However, these techniques i...
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Ahmad Abdo, Xueyang Li, Md Samiul Alam, Mahdi Parvizi, Naim Ben-Hamida, Claude D?Amours and David Plant
Pre-emphasis filters are used to pre-compensate for the transmitter frequency response of coherent systems to mitigate receiver noise enhancement. This is particularly essential for low-cost, low-power coherent transceivers due to having an extremely ban...
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Ahmad Abdo, Sadok Aouini, Bilal Riaz, Naim Ben-Hamida and Claude D?Amours
In this paper, we propose a novel circuit and system to optimize the spacing between optical channels in gridless (also called flexible-grid or elastic) networking. The method will exploit the beginning-of-life link margin by enabling the channel to oper...
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Yang Yue, Qiang Wang and Jon Anderson
In this article, we review the latest progress on data center interconnect (DCI). We then discuss different perspectives on the 400G pluggable module, including form factor, architecture, digital signal processing (DSP), and module power consumption, fol...
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Elias Giacoumidis, Yi Lin, Jinlong Wei, Ivan Aldaya, Athanasios Tsokanos and Liam P. Barry
Coherent optical orthogonal frequency division multiplexing (CO-OFDM) has attracted a lot of interest in optical fiber communications due to its simplified digital signal processing (DSP) units, high spectral-efficiency, flexibility, and tolerance to lin...
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Hasan Farahneh and Xavier Fernando
Reliable vehicular communications is fast becoming a necessity. Vehicle to infrastructure (V2I) communication, which is critical for safety, is often interrupted when vehicles travel in tunnels. Leaky Feeder (LF) or radiating cable have been the primary ...
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