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NyquistOFDM pulse-shaping

The Optical Society (OSA) today published a series of papers as part of an upcoming Special Issue on the 2012 European Conference on Optical Communication (ECOC) in its open-access journal Optics Express. The effort is a continuation of OSA’s existing partnership with ECOC. The issue features in-depth versions of 134 papers from the conference, covering topics such as multicore components, hybrid optoelectronic devices, scalable 100 gigabit-per-second (Gb/s) transmitters, cooperative coherent receivers and others.

The issue includes submissions from 37% of the authors of the 350+ papers presented at ECOC 2012 on 16-20 September in Amsterdam, The Netherlands. It was organised by the general and program chairs of the conference and edited by the subcommittee chairs of ECOC’s technical categories.

General and program chairs:

• Piet Demeester, iMinds, Ghent University, Belgium

• Harm Dorren, COBRA, Eindhoven University, The Netherlands

• Ton Koonen, COBRA, Eindhoven University, The Netherlands

• Peter van Daele, iMinds, Ghent University, Belgium

Subcommittee chairs for:

• Access Networks and LANs: Eduward Tangdionnga, COBRA, Eindhoven University, The Netherlands

• Backbone and Core Networks: Mario Pickavet, iMinds, Ghent University, Belgium

• Fibers, Fiber Devices, and Amplifiers: Patrice Megret, University of Mons, Belgium

• Subsystems for Optical Networks: Antonio Teixeira, University of Aveiro Portugal, Portugal

• Transmission Systems and Network Elements: Huug de Waardt, COBRA, Eindhoven University, The Netherlands

• Waveguide and Optoelectronic Devices: Juerg Leuthold, Karlsruhe Institute of Technology, Germany

The following papers were identified by the subcommittee chairs as highlights of the Optics Express Special Issue on ECOC 2012. All are included in Volume 20, Issue 26 and can be accessed online at this website:

• “112-Gb/s monolithic PDM-QPSK modulator in silicon,” P. Dong(1), et al., Optics Express, Vol. 20, Issue 26, pp. B624-B629 (2012). (1) Alcatel-Lucent Bell Labs, US.
This paper shows the impressive progress that the field of integrated optics is undergoing. While 10 years ago silicon photonics was a rather sparse field, it has turned into a dynamic research field with impressive progress that might soon give pace to the industry. The authors demonstrate a fully integrated silicon photonic IQ-modulator pair with a built-in polarisation multiplexer. It features ultra-compact dimensions of 1.4mm × 13mm and reasonable low on-chip losses of 4.6dB.

• “Real-time OFDM or Nyquist pulse generation: Which performs better with limited resources?” R. Schmogrow (1), et al., Optics Express, Vol. 20, Issue 26, pp. B543-B551 (2012). (1) Karlsruhe Institute of Technology, Germany.
Nowadays, much focus is put on resources required for enabling advanced technologies that improve fibre bandwidth usage. In this paper, the authors give an “apples to apples” comparison of the implications and resources required for Orthogonal Frequency-Division Multiplexing (OFDM) and Nyquist single-channel and wavelength division multiplexing (WDM) approaches.

• “Uncoupled multi-core fibre enhancing signal-to-noise ratio,” T. Hayashi (1), et al., Optics Express, Vol. 20, Issue 26, pp. B94-B103 (2012). (1) Sumitomo Electric Industries, Ltd., Japan.
This paper addresses the realisation of a low-loss multicore fibre (MCF) and presents a record effective area of 120µm2 and attenuation of 0.17dB/km for a 7-core fibre with acceptable cladding and crosstalk values. For the last two decades, the transmission capacity of single-core fibres has increased by more than three orders of magnitude. However, in recent years, these increases have levelled off. In this paper, the authors demonstrate the potential of using an MCF to overcome the capacity limit of single-core fibre transmission systems.

“Through this partnership with a high-impact peer-reviewed journal like Optics Express, the researchers presenting their work at ECOC were given a unique opportunity to expand upon what was presented in September into a full-length technical manuscript,” said Martijn de Sterke, editor-in-chief of Optics Express. “This is a big win for everyone involved. We’re very pleased to promote this high-quality content in an open access format for the benefit of optical communications researchers and the field as a whole.”

Labels: US,optics,conference

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