Dominique Marcenac - Academia.edu (original) (raw)

Papers by Dominique Marcenac

This paper contributes to the recent debate of how to define Advertising. The study explores the ... more This paper contributes to the recent debate of how to define Advertising. The study explores the meaning of Advertising for Millennials in the UK and US. The results indicate that Millennials use the term Advertising in a generic way, seeing it as Companies promoting a product or service to people through media. They perceive Advertising to be more sales orientated and company based than recent definitions. There are also clear differences between the definitions for the two countries, with the UK definition being more about informing and the US definition being linked to persuasion. Implications of these findings are discussed.

This dissertation presents a new "time domain model" to design and invent advanced lase... more This dissertation presents a new "time domain model" to design and invent advanced laser diodes for optical fibre communications. It is securely based on quantum theory. This new model describes the optical fields in the time domain, allowing it to simulate large signal responses for Fabry-Perot and Distributed Feedback (DFB) lasers, in addition to calculating the laser linewidth and the Relative Intensity Noise (RIN). The quantum basis for this time domain model justifies the noise treatment of some other recent semiclassical laser models. However, it indicates that these models are incapable of simulating lasers with sub-Poissonian photon statistics (squeezing). The time domain model is implemented with new algorithm, which uses a transfer matrix method to simulate DFB lasers with much greater accuracy than previously. New applications for two numerical methods are then introduced, providing tools to study the spectra of lasers simulated by the time domain model. Firstly...

1997 IEEE MTT-S International Microwave Symposium Digest

... figure 4. The downstream signal consisted of QPSK data at 120 Mb/s (upconverted to 1.35 GHz) ... more ... figure 4. The downstream signal consisted of QPSK data at 120 Mb/s (upconverted to 1.35 GHz) and 20 FM TV channels from the Astra satellite ... L. Noel, D. D. Marcenac, and D. Wake, Optical millimetre-wave generation technique with high efficiency, purity and stability, Electron ...

Conference Proceedings. LEOS '97. 10th Annual Meeting IEEE Lasers and Electro-Optics Society 1997 Annual Meeting, 1996

The MQW DFB grating semiconductor laser (GSL)+ dispersion compensated fibre (DCF) source taken al... more The MQW DFB grating semiconductor laser (GSL)+ dispersion compensated fibre (DCF) source taken alone exhibits a relatively poor extinction ratio (-20dB) which impairs its potential for use in a 40 Gbit/s optical time domain multiplexing (OTDM) system. However, with the addition of an electroabsorption modulator to suppress the pulse pedestals to better than 30 dB extinction, coherent interference noise is

In-Plane Semiconductor Lasers IV, 2000

ABSTRACT

Physics and Simulation of Optoelectronic Devices III, 1995

We show theoretically, that the detuning between the stop bands of the two DFB sections gives ris... more We show theoretically, that the detuning between the stop bands of the two DFB sections gives rise to different self pulsation types: i) dispersive self Q-switching of a single mode (around 10 GHz repetition rate), or ii) beating oscillations between two modes of equal threshold gain (more than 100 GHz). Our analysis is based on the dynamic coupled wave equations, together with carrier rate equations. Using a mode expansion of the optical field, we perform a stability and bifurcation analysis as well as a direct numerical integration of the full equations, which demonstrates the stability and bifurcation analysis as well as a direct numerical integration of the full equations, which demonstrated the appearance of the two self pulsation types. In the examples investigated, we find finite self pulsation islands in the plane spaned by the two currents, which is in qualitative agreement with published experimental results.

Optical Fiber Communication Conference. Technical Digest Postconference Edition. Trends in Optics and Photonics Vol.37 (IEEE Cat. No. 00CH37079), 2000

IEE Proceedings - Optoelectronics, 2000

A dual mode laser source is proposed. It is based on a sampled grating DFB laser constituted with... more A dual mode laser source is proposed. It is based on a sampled grating DFB laser constituted with alternating DFB and FP sections. The basic principles of this device are presented, and its behaviour is studied through modelling. It is shown that mode spacing in the millimetre-wave domain (here 60GHz) can be achieved with relatively short devices using a common DFB structures coupling coefficient.

Optical Networks and Their Applications, 1998

BT is currently introducing WDM point-to-point links. First, the current state of this pilot is r... more BT is currently introducing WDM point-to-point links. First, the current state of this pilot is reviewed. Secondly, views on the future evolution of WDM are presented. The implications of the differences between unprotected and optically protected point-to-point WDM systems are presented. Technology options beyond point-to-point WDM, in the form of OADM rings, are then discussed.

Optical Fiber Technology, 1999

... 16. B. Mikkelsen, M. Vaa, N. Storkfelt, T. Durhuus, C. Joergensen, RJS Pedersen, SL Danielsen... more ... 16. B. Mikkelsen, M. Vaa, N. Storkfelt, T. Durhuus, C. Joergensen, RJS Pedersen, SL Danielsen, KE Stubkjaer, M. Gustavsson, W. van Berlo and M. Janson, Monolithic integrated Michelson interferometer with SOA&#x27;s for high speed all-optical signal processing. Proc. ...

Optical Engineering, 2002

We report the theory of operation and time domain model (TDM) simulation results for a two-sectio... more We report the theory of operation and time domain model (TDM) simulation results for a two-section Fabry-Pé rot sampled grating distributed Bragg reflector (FP/SGDBR), 100-GHz, step-tunable laser [sidemode suppression rate (SMSR)Ͼ38 dB]. Although the main idea, the Vernier effect, was previously published, we present for the first time these two-section combinations for this specific sort of application.

IEEE Photonics Technology Letters, 1997

The large-signal theory of frequency converters based on cross-gain and cross-phase modulations i... more The large-signal theory of frequency converters based on cross-gain and cross-phase modulations in a semiconductor optical amplifier is developed, for the case in which pump and probe are injected from the same facet (co-propagating case). Simple expressions for the bandwidth of cross-gain modulation are derived for single and cascaded SOA's, and large-signal simulations are carried out for cascaded SOA's, pointing out some important system issues. In the cascaded case, the effect of the loss between the SOA's is highlighted.

IEEE Journal of Quantum Electronics, 2000

A theoretical model of a self-pulsating three-section DFB laser with an integrated phase tuning s... more A theoretical model of a self-pulsating three-section DFB laser with an integrated phase tuning section is established. It is based on traveling wave equations and the standard carrier rate equations. Parameters of an existing device are used for applying the model. Key conditions and characteristics of self-pulsations (SPs) are modeled and compared with experimental results. The important role of phase tuning for turning on the SP is pointed out. The dependence of the SP regime on the detuning between the Bragg wavelengths in the laser and reflector is determined and the essential role of phase-readjustement is identified. Frequency tuning via the laser currents, as well as the pulse shape at various frequencies, is investigated. This allows us to identify the mechanism for frequency tuning. The model turns out to be a good tool to improve our knowledge of the self-pulsation effect and to design optimized devices.

IEEE Journal of Quantum Electronics, 1994

IEEE Communications Magazine, 1998

All-Optical Wavelength Conversion Using SOA Nonlinearities Derek Nesset, Tony Kelly, and Dominiqu... more All-Optical Wavelength Conversion Using SOA Nonlinearities Derek Nesset, Tony Kelly, and Dominique Marcenac BT Laboratories Abstract In this article the increasing use of WDM systems in telecommu-nications networks is highlighted, and the potential role for wavelength ...

IEEE Communications Magazine, 1997

100 Gb/s and higher [2] - beyond the envisaged speed limits of electronics. The underlying princi... more 100 Gb/s and higher [2] - beyond the envisaged speed limits of electronics. The underlying principle in OTDM is that many lower-speed data channels, each transmitted in the form of extremely short optical pulses, are time-interleaved to form a single high-speed data stream. Both WDM ...

Electronics Letters, 1995

... Lett.. 1995, 31, (17). pp. 87-89 6 COLE, MJ, LOH, WH, LAMING, RI, ZERVAS, MN, and BARCELOS, S... more ... Lett.. 1995, 31, (17). pp. 87-89 6 COLE, MJ, LOH, WH, LAMING, RI, ZERVAS, MN, and BARCELOS, S.: Bandwidth enhancement of wavelength conversion via cross-gain modulation by semiconductor optical amplifier cascade DD Marcenac, AE Kelly, D. Nesset and DAO Davies ...

Electronics Letters, 1998

microbender, are shown in Fig. 4u and b, respectively. The measurement results are in quite good ... more microbender, are shown in Fig. 4u and b, respectively. The measurement results are in quite good agreement with those obtained using the destructive VAT method. The maximal difference between the proposed method and the VAT method is < 7.5%.