Optical Fiber Communications

T. Kanesan, W. P. Ng, Z. Ghassemlooy, and J. Perez, "Optimization of Optical Modulator for LTE RoF in Nonlinear Fibre Propagation," Photonics Technology Letters, IEEE, vol. PP, pp. 1-1, 2012.

by Thavamaran Kanesan

A. Bahrami, T. Kanesan, W. P. Ng, Z. Ghassemlooy, and C. Qiao., "Performance evaluation of radio-over-fibre systems using Mach-Zehnder modulator," in London Communication Symposium (LCS) London, UK, 2010.

by Thavamaran Kanesan

Analytical and Numerical Evaluation of Transmission Characteristics of Chirped DBF Lasers in Dispersive Optical Fiber.

by Jesus Martinez Linares

Jesús Martínez-Linares, C.R. Mirasso, P. García-Fernández y F.J. Bermejo, Published in Optics Communications 116, 116-122 (1995). Índice de impacto 1.488. Revista 17 de 54 en el área de Óptica (2004). Editorial: Elsevier. ISSN: 0030-4018.

Analytical and numerical results are presented for the propagation of optical pulses of 1.5 μm DFB lasers in the... more Analytical and numerical results are presented for the propagation of optical pulses of 1.5 μm DFB lasers in the presence of fiber dispersion. An approximate analytical model for the evolution of the pulse is given and shown to provide reasonable agreement with the numerical results obtained for digital transmission at 3.0 Gb/s. Comparison with pulse broadening and compression of Gaussian pulses is given, showing that our model, which fits the initial pulse to an asymmetrical function, describes the numerical results better. The utility of the model is for fiber dispersion compensation. Although the examples analyzed are not of practical interest, they show the benefit of the theory with respect to the Gaussian model, since it is able to predict numerical results.

Science and technology challenges in XXIst century optical communications

by Francesco Poletti

Article for the 50th anniversary of the invention of the LASER

Published in Comptes Rendus Physique Volume 12, Issue 4, May 2011, Pages 387–416

The state of the art of XXIst century optical communication systems is reviewed through the associated technologies of... more The state of the art of XXIst century optical communication systems is reviewed through the associated technologies of laser sources, photo-receivers, integrated photonic circuits, optical fibres, and coherent modulation formats. Emphasis is put on current science and technology challenges to approach ultimate physical limits and to develop innovative solutions allowing performance enhancement at minimal cost increase.

Compact all-optical switch for WDM networks based on Raman effect in silicon nanowavegide

by Siamak Abaslou

We propose an all optical switching scheme based on Raman gain in silicon nanowaveguide suitable for multichannel... more We propose an all optical switching scheme based on Raman gain in silicon nanowaveguide suitable for multichannel optical communications. Raman gain is used for amplification of control pulse with higher wavelength which depletes the tuned channel signal. Separation between control and signal pulses should be equal to the Raman shift in silicon. By employing 3 mm channel nanowaveguide we demonstrate a channel attenuation of about 12 dB while the suppression ratio for the first and second neighboring channels are about 1.6 dB and 1 dB, respectively. This scheme can be used as an all optical switch in DWDM networks. Moreover, we demonstrate that the depleted channel can be retrieved by a control pulse with lower wavelength in which the pulse amplifies the channel in contrast to the prior situation.

Broadband programmable equalizer and limiting amplifier for an XFI interface in 45nm CMOS

by Pablo Sonna

On the higher order modes of elliptical optical fibers

by Michael Saad

IEEE Trans. MTT, vol. 33, pp. 1110-13, Nov 1985.

Ringtorsionskraftmeßzelle mit symmetrischem LWL-Interferometer

by TAREK ELSARNAGAWY

A novel scheme for video streaming over OBS networks

by Shavan Askar

Switchover times in optical communication systems—Can they always be ignored?

by Khurram Aziz

Baseline-Wander Effects on Systems Employing Digital Pulse-Intervalmodulation

by Z Ghassemlooy

The Performance of PPM Using Neural Network and Symbol Decoding for Diffused Indoor Optical Wireless Links

by Z Ghassemlooy

Optical Pulse Interval and Width Modulation for Analogue Fibre Communications

by Z Ghassemlooy

Digital Pulse Interval Modulation for Optical Communications

by Z Ghassemlooy

Spectral Characteristics of Dual Header Pulse Interval Modulation (DH-PIM)

by Z Ghassemlooy

Modified Split-Step Fourier Method for the Numerical Simulation of Soliton Amplification in Erbium-Doped Fibers with Forward Propagating Noise

by Jorge Costa

Jorge R. Costa, Carlos R. Paiva, and Afonso Barbosa, “Modified Split-Step Fourier Method for the Numerical Simulation of Soliton Amplification in Er-bium-Doped Fibers with Forward Propagating Noise,” IEEE Journal of Quan-tum Electronics, Vol. 37, Nº 1, pp. 145-152, Jan. 2001

Using a modified version of the split-step Fourier method, we analyze the effect of noise on soliton propagation... more Using a modified version of the split-step Fourier method, we analyze the effect of noise on soliton propagation inside erbium-doped fiber amplifiers. In fact, noise from forward-propagating amplified spontaneous emission, associated with a Markov immigration process, is included in the analysis of soliton amplification. Moreover, this algorithm accounts for the real spectral gain profile of the fiber amplifier. The frequency jitter, induced during soliton amplification, is compared with the Gordon-Haus effect where optical amplifiers are considered as noisy point-like devices

Numerical Study of Passive Gain Equalization With Twin-Core Fiber Coupler Amplifiers for WDM Systems

by Jorge Costa

Jorge R. Costa, Pedro M. Ramos, Carlos R. Paiva, and Afonso Barbosa, “Nu-merical Study of Passive Gain Equalization with Twin-Core Fiber Coupler Amplifiers for WDM Systems,” IEEE Journal of Quantum Electronics, Vol. 37, Nº 12, pp. 1553-1561, Dec. 2001

This paper presents a numerical study of twin-core fiber coupler amplifiers for equalization of wavelength division... more This paper presents a numerical study of twin-core fiber coupler amplifiers for equalization of wavelength division multiplexing (WDM) channels. The propagation of WDM pulses within a coupler and a chain of couplers is analyzed. The real spectrum gain of the device is considered along with dispersion and nonlinear effects. The influence of intermodal dispersion is studied. A model is developed based on a set of linearly coupled nonlinear Schrodinger equations.

Multichannel Soliton Amplification in Erbium-Doped Fiber Amplifiers

by Jorge Costa

Jorge R. Costa and Carlos R. Paiva, “Multichannel Soliton Amplification in Erbium-Doped Fiber Amplifiers,” Microwave and Optical Technology Letters, Vol. 19, Nº 4, pp. 309-313, Nov. 1998

Soliton amplification in fiber amplifiers has been analyzed using either a parabolic-gain profile (as in the complex... more Soliton amplification in fiber amplifiers has been analyzed using either a parabolic-gain profile (as in the complex Ginzburg-Landau equation) or a Lorentzian profile (as in the set of Maxwell-Bloch equations). For multichannel soliton amplification in erbium-doped fiber amplifiers, we present a new numerical method that takes into account the actual gain profile based on the experimental wa¨elength dependence of the transition cross sections.

Avalanche Photodiodes in High-Speed Receiver Systems

by James Green

This is a book chapter on high speed receivers which treats noise and sensitivity

Optical Networks and the Future of Broadband Services* 1

by Lee McKnight