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Du X.,University of Victoria | Vincent S.,University of Victoria | Faucher M.,TeraXion | Picard M.-J.,TeraXion | Lu T.,University of Victoria
Optics Express | Year: 2014

We outline a full-vectorial three-dimensional multi-mode matching technique in a cylindrical coordinate system that addresses the mutual coupling among multiple modes co-propagating in a perturbed whispering gallery mode microcavity. In addition to its superior accuracy in respect to our previously implemented single-mode matching technique, this current technique is suitable for modelling waveguide-to-cavity coupling where the influence of multi-mode coupling is non-negligible. Using this methodology, a robust scheme for hybrid integration of a microcavity onto a silicon-on-insulator platform is proposed. © 2014 Optical Society of America.


QUÉBEC, QUÉBEC--(Marketwired - 30 oct. 2016) - Il y a de la fébrilité dans l'air à quelques heures de la cérémonie d'ouverture officielle du Congrès mondial JCI Québec 2016, qui débute aujourd'hui au Centre des congrès de Québec. « Nous sommes très fiers de pouvoir enfin livrer le fruit du travail abattu avec passion par toute l'équipe. Ce congrès constitue une opportunité incroyable pour les participants de faire croître leur réseau de partenaires d'affaires et de mettre en valeur leurs produits et services sur le plan international », soutient Me Jean-Simon Deschênes, directeur de congrès et chef de la direction de JCI Québec 2016. Quelque 3000 inscrits provenant des quatre coins de la planète sont attendus au plus gros congrès d'affaires jamais tenu à Québec. Au menu jusqu'au 4 novembre, des formations et des conférences de haute qualité, des visites d'entreprises, des activités de réseautage, des galas et bien plus encore! Des pays tels que le Japon, l'Inde, la France et l'Allemagne seront largement représentés. « Il s'agit d'une vitrine exceptionnelle pour la Capitale-Nationale, le Québec et le Canada. Avec des retombées économiques estimées à plus de 7 millions de dollars pour la région, ce sera une occasion unique pour la communauté d'affaires de Québec de faire découvrir son dynamisme et d'échanger avec des intervenants de partout dans le monde », précise P.-Michel Bouchard, pdg du Centre des congrès de Québec, hôte de l'événement. En plus d'être une organisation où convergent les gens d'affaires de moins de 40 ans de partout dans le monde, JCI se démarque par son offre d'opportunités de développement qui leur permettent de se développer sur les plans personnel et professionnel, mais aussi comme citoyens impliqués dans chacune de leur communauté. « En utilisant la force de son réseau, JCI poursuit l'objectif à long terme de devenir l'organisation qui unit tous les secteurs de la société pour créer un impact durable. Cette année, les actions de JCI ont été inspirées de la thématique Peace is possible, qui représente à merveille les valeurs de l'organisation dans un contexte géopolitique instable présent à plusieurs endroits dans le monde », explique Me Deschênes. Les congressistes auront l'occasion d'assister à plusieurs présentations offertes par des conférenciers vedettes, dont la conférence très attendue de l'astronaute Chris Hadfield, le premier Canadien à avoir marché dans l'espace et commandé la Station spatiale internationale (4 novembre dès 13 h). Le congrès accueillera également Alexandre Bilodeau, le premier athlète de l'histoire du Canada à remporter une médaille d'or en sol canadien lors des Jeux olympiques de Vancouver en 2010 (31 octobre dès 10 h). Ayant pour titre Control and risk taking, sa conférence abordera les facteurs clés qui l'ont mené à remporter sa deuxième médaille olympique. Mme Irina Bokova, directrice générale de l'UNESCO, prendra quant à elle la parole devant les congressistes à propos des valeurs qui rejoignent JCI et de son implication pour un monde meilleur (31 octobre dès 14 h). En plus de leur implication financière dans JCI, les frères Andrew et Geoff Molson livreront pour leur part une conférence conjointe où il sera notamment question de leur parcours entrepreneurial (3 novembre dès 11 h 15). Parmi cette impressionnante brochette d'invités, notons enfin la présence du président-directeur général de Québec International, Carl Viel, qui s'adressera aux congressistes (3 novembre dès 14 h 30). Le comité organisateur est aussi heureux de présenter la toute première World Elevator Pitch Competition en collaboration avec la Chambre de commerce et d'industrie de Québec. Le principe est simple : les entrepreneurs ou les jeunes leaders participants devront compétitionner entre eux à l'occasion d'une activité qui les forcera à communiquer efficacement. Ils auront la possibilité de vendre leur modèle d'entreprise ou leurs idées à des investisseurs ou des partenaires potentiels. La finale aura lieu devant un jury et les participants du congrès le 2 novembre. Pendant la durée du congrès, les participants profiteront de quatre journées de visites d'entreprises prestigieuses de la région. Ainsi, le Mouvement Desjardins ouvrira aux congressistes les portes de la tour de la Cité de la Coopération Desjardins à Lévis, le lundi 31 octobre. Le lendemain, le mardi 1er novembre, les visiteurs pourront faire un tour guidé du Parc technologique du Québec métropolitain avec des arrêts chez Arcane Technologies, Optel Vision, INO et TeraXion. Le mercredi 2 novembre, le Musée de l'ingéniosité J. Armand Bombardier et Bombardier produits récréatifs (BRP) permettront aux intéressés de découvrir l'ingéniosité que l'on retrouve dans le domaine des transports. Enfin, les participants du congrès pourront saisir l'ampleur du dynamisme qui habite l'industrie du jeu vidéo de la ville de Québec en visitant, le jeudi 3 novembre, des entreprises telles que Squeeze Studio, Cortex Media, l'incubateur accélérateur d'entreprises technologiques LE CAMP, ainsi que Beenox et Frima Studio. Vous trouverez ici la programmation complète du congrès : http://jciquebec2016.com/fr/. Créé par la Jeune chambre de commerce de Québec (JCCQ) et la Jeune Chambre du Canada (JCI Canada), le comité JCI Québec 2016 est responsable de la tenue du congrès mondial de la Jeune Chambre internationale (JCI) en 2016. Fondée en 1915 à St-Louis aux États‐Unis par Henry Giessenbier, la JCI est une organisation qui encadre aujourd'hui près de 5 000 jeunes chambres à travers le monde et qui rassemble, dans près de 125 pays, plus de 175 000 jeunes gens d'affaires, professionnels et citoyens actifs âgés de 18 à 40 ans. La JCI Canada s'applique à être la principale organisation de développement du leadership pour les jeunes de moins de 40 ans et regroupe l'ensemble des jeunes chambres de Vancouver à Halifax. La JCCQ s'est jointe à JCI Canada en 2002. Comptant plus de 500 membres, la JCCQ est le deuxième plus grand chapitre local de JCI au monde.


News Article | October 30, 2016
Site: www.marketwired.com

QUÉBEC, QUÉBEC--(Marketwired - Oct. 30, 2016) - Anticipation is in the air as we approach the official opening ceremony of the JCI World Congress Québec 2016 that takes place today at the Quebec City Convention Centre. "We are very proud to finally be able to see over a year's work and planning in action. This congress is an incredible opportunity for the participants to broaden their business networks and to promote their products and services on an international scale", proclaims Mr. Jean-Simon Deschênes, Congress Director and Chief Executive Officer of JCI Québec 2016. Some 3000 participants from the four corners of the world are expected to attend the biggest business conference ever hosted in Quebec City. On the agenda till November 4th, is a series of training sessions, first-rate conferences, company visits, networking events, galas, and more! Countries including Japan, India, France, and Germany will make up a large part of the congress turnout. "It's a window of opportunity for the Capitale-Nationale region, Quebec City, and Canada. With an economic impact estimated at more than 7 million dollars for the region, this will be a unique chance for Quebec City's business community to share its dynamism and to talk with representatives from around the world", states P.-Michel Bouchard, President and CEO of the Quebec City Convention Centre, which will be hosting this event. On top of being the crossroads for business people under 40 from around the world, JCI sets itself apart by offering development opportunities that allow them to grow on not only a personal and professional level, but also as citizens involved in their respective communities. "Using the strength of its network, JCI pursues its long term objective of becoming the organization that brings all sectors of society together to create a sustainable impact. This year, JCI's actions were inspired by the campaign Peace is Possible, a theme that truly represents the values of an organization that has worldly influence in a changing geopolitical landscape", explains Mr. Deschênes. Delegates will have the opportunity to attend a variety of presentations given by our keynote speakers, one of which, the highly anticipated keynote by astronaut Chris Hadfield, First Canadian Commander of the International Space Station. The congress will also welcome Alexandre Bilodeau, the first athlete in Canadian history to win a gold medal on Canadian soil at the Vancouver 2010 Winter Olympics. With the title Control and Risk Taking, his keynote will cover key factors that led him to win his second Olympic medal. On top of their financial support with JCI, brothers Andrew and Geoff Molson will co-deliver a keynote about their entrepreneurial path. Last but not least in this impressive line-up, President and CEO of Québec International, Carl Viel will be addressing the delegates. The organizing committee is proud to present the first ever World Elevator Pitch Competition, presented in collaboration with the Quebec City chamber of commerce and industry (CCIQ). Each entrepreneur or young leader participating will go before their peers in an activity that compels them into efficient communication. They will each have the chance to sell their business model or ideas to potential partners or investors. The final round will take place in front of a jury and congress attendees on November 2nd. Over the course of the congress, participants will be able to take advantage of four days of visits from reputable companies in the region. In fact, The Desjardins Group will open the doors to its Cité de la Coopération Desjardins Tower in Lévis on Monday October 31st. The following day, Tuesday November 1st, visitors will be able to go on a guided-tour of the Quebec Metro High Tech Park with stops at Arcane Technologies, Optel Vision, INO, and TeraXion. On Wednesday, November 2nd, those interested can visit the Museum of Ingenuity J. Armand Bombardier and Bombardier Recreational Products (BRP) to discover the ingenuity found in the transportation business. Finally, on Thursday November 3rd, congress delegates will feel the extent of dynamism in Quebec City's videogame industry by dropping in on companies such as Squeeze Studio, Cortex Media, business incubator and accelerator LE CAMP, as well as Beenox and Frima Studio. The full congress program can be found here: http://jciquebec2016.com/ Created by the Junior Chamber of Commerce Québec (JCCQ) and Junior Chamber International (JCI) Canada, the JCI Québec 2016 committee is responsible for JCI World Congress Québec 2016. Founded in 1915 by Henry Giessenbier in St. Louis, Missouri, USA, JCI oversees close to 5,000 Junior Chambers around the world and brings together more than 175,000 young business people and active citizens aged 18 to 40 in nearly 125 countries. JCI Canada is committed to being the leading development organization for youth under 40 years of age and includes all Junior Chambers from Vancouver to Halifax. The Junior Chamber of Commerce Québec joined JCI Canada in 2002. With more than 500 members, JCCQ is the world's second largest local chapter of JCI.


Morsy-Osman M.,McGill University | Chagnon M.,McGill University | Poulin M.,TeraXion | Lessard S.,Ericsson AB | Plant D.V.,McGill University
Journal of Lightwave Technology | Year: 2015

A polarization-division-multiplexed (PDM) intensity-modulation/direct-detection (IM/DD) system enabled by a novel multiple-input and multiple-output DSP operating in the Stokes space following a DD receiver is demonstrated. Modulating the intensity of the two orthogonal polarization states of a single laser enables doubling the maximum achievable bit rate per wavelength channel, which halves the number of required laser sources in a transceiver using PDM and WDM to achieve an aggregate bit rate compared to using only WDM. Quantitatively, 224 Gb/s is experimentally transmitted over 10 km using a single 1310-nm laser and a silicon photonic intensity modulator using 56-Gbaud PDM PAM-4 with a BER of 4.1 × 10-3. Also, PDM enables halving the baud rate needed to achieve 112 Gb/s resulting in 20-km transmission at low BERs (10-5-10-6), using either 56-Gbaud PAM-2 or 28-Gbaud PAM-4. These low pre-FEC BERs achieved at 112 Gb/s allow reducing the FEC overhead required compared to a single polarization system that employs twice the baud rate to achieve the same bit rate. Though the transceiver was implemented using discrete components, it can be fully integrated on a SiP chip, enabling its practical realization for short-reach optical interconnects inside datacenters. Finally, in addition to the experimental results, we perform simulations to further investigate the performance of the receiver. In particular, we studied the impact of varying the splitting ratios of the two couplers in the proposed front-end and concluded that using 67/33 couplers instead of 50/50 couplers renders the performance completely independent of the state of polarization of the received signal. © 2015 IEEE.


Chagnon M.,McGill University | Morsy-Osman M.,McGill University | Poulin M.,TeraXion | Paquet C.,TeraXion | And 2 more authors.
Journal of Lightwave Technology | Year: 2015

A packaged silicon photonic traveling wave Mach-Zehnder modulator operating at 1310 nm is presented and studied. The modulator is a series push-pull device and requires a bias applied to the common n-doped region. Effects of varying the bias voltage on the modulator's Vπ , bandwidth, and on chip-insertion loss are studied, and its impact on transmission performance are experimentally investigated for PAM-4 and PAM-8 formats at a throughput of 112 Gb/s, over varying distances of 0, 2, 10, and 20 km. Residual chromatic dispersion is shown to have no impact on performance up to 20 km. The PAM RF driving waveform is generated by an 8-bit digital-to-analog converter, while direct detection is done with a PIN+TIA followed by an 8-bit analog-to-digital converter. This IM/DD system utilizes digital signal processing with transmitter spectral compensation and receiver residual equalization. The performance impact for a varying number of transmitter precompensation taps and receiver equalization taps is studied, which has a direct impact on the transceiver's power consumption. Using PAM-4, a BER below the FEC limit is obtained for either combinations of (transmitter, receiver) tap lengths: (19,19), (7,27), or (35,7), allowing flexibility in power consumption distribution. © 2015 IEEE.


Chagnon M.,McGill University | Osman M.,McGill University | Poulin M.,TeraXion | Latrasse C.,TeraXion | And 5 more authors.
Optics Express | Year: 2014

We present a Silicon Photonic (SiP) intensity modulator operating at 1.3 μm with pulse amplitude modulation formats for short reach transmission employing a digital to analog converter for the RF signal generator, enabling pulse shaping and precompensation of the transmitter's frequency response. Details of the SiP Mach-Zehnder interfometer are presented. We study the system performance at various bit rates, PAM orders and propagation distances. To the best of our knowledge, we report the first demonstration of a 112 Gb/s transmission over 10 km of SMF fiber operating below pre-FEC BER threshold of 3.8 × 10-3 employing PAM-8 at 37.4 Gbaud using a fully packaged SiP modulator. An analytical model for the Q-factor metric applicable for multilevel PAM-N signaling is derived and accurately experimentally verified in the case of Gaussian noise limited detection. System performance is experimentally investigated and it is demonstrated that PAM order selection can be optimally chosen as a function of the desired throughput. We demonstrate the ability of the proposed transmitter to exhibit software-defined transmission for short reach applications by selecting PAM order, symbol rate and pulse shape. © 2014 Optical Society of America.


Simard A.D.,Laval University | Ayotte N.,Laval University | Painchaud Y.,TeraXion | Bedard S.,Laval University | LaRochelle S.,Laval University
Journal of Lightwave Technology | Year: 2011

A major issue in the fabrication of integrated Bragg grating (IBG) filters in highly confined waveguides is the average effective index fluctuations caused by sidewall roughness. In this work, we model the impact of this effect on IBG spectral responses and we identify key parameters that need to be controlled in order to minimize distortions. We show that only low spatial frequency components of the noise are relevant to the calculation of the IBG spectral response, which decreases considerably the computation time. Furthermore, we present an IBG emulator that allows estimation of expected fabrication yield of specific gratings given that the fabrication process is well characterized. The analysis of apodized gratings is used as an example to illustrate how this modeling can help to reduce development cost by first studying robustness of IBG designs to fabrication limitations. Finally, we study analytically the impact of sidewall roughness having short correlation lengths and small roughness variances on the spectral response of weak gratings. © 2006 IEEE.


Simard A.D.,Laval University | Painchaud Y.,TeraXion | La Rochelle S.,Laval University
Optics Express | Year: 2013

Over the last two decades, many filters requiring custom spectral responses were obtained from photo-inscribed fiber Bragg gratings because of the flexibility inherent to this technology. However, Bragg gratings in silicon waveguides have the potential to provide faster and more efficient tuning capabilities when compared to optical fiber devices. One drawback is that Bragg gratings filters with elaborate spectral amplitude and phase responses often require a long interaction length, which is not compatible with current integration trends in CMOS compatible photonic circuits. In this paper, we propose to make Bragg gratings in spiral-shaped waveguides in order to increase their lengths while making them more compact. The approach preserves the flexibility of regular straight grating structures. More specifically, we demonstrate 2-mm long gratings wrapped in an area of 200 μm x 190 μm without any spectral degradation due to waveguide curvature. Furthermore, we interleave three spiral waveguides with integrated gratings thereby tripling the density and demonstrate good phase compensation for each of them. Finally, we show that this approach is compatible with phase-apodization of the grating coupling coefficient. © 2013 Optical Society of America.


Simard A.D.,Laval University | Beaudin G.,Université de Sherbrooke | Aimez V.,Université de Sherbrooke | Painchaud Y.,TeraXion | LaRochelle S.,Laval University
Optics Express | Year: 2013

A major issue in the fabrication of integrated Bragg grating filters in highly confined waveguides is the average effective index fluctuations caused by waveguide dimension variations. Lateral variations are caused by the sidewall roughness created during the etching process while vertical variations are coming from the wafer silicon layer thickness non-uniformity. Grating spectral distortions are known to result solely from the low spatial frequency components of these variations. As a result, in this work, we present an experimental method to quantify such relevant spatial components by stitching a hundred high-resolution scanning electron microscope images. Additionally, we propose two techniques to reduce, in the design, the phase noise impact on integrated Bragg gratings without relying on fabrication process improvements. More specifically, we show that the use of hybrid multimode/singlemode waveguides reduce by more than one order of magnitude the effect of sidewall roughness on integrated Bragg gratings while we show that the fabrication of ultra-compact gratings in spiral waveguides mitigate the impact of the silicon layer thickness variations. ©2013 Optical Society of America.


Simard A.D.,Laval University | Belhadj N.,Laval University | Painchaud Y.,TeraXion | Larochelle S.,Laval University
IEEE Photonics Technology Letters | Year: 2012

An accurate control of the apodization profile is still an issue for integrated Bragg grating filters fabricated in silicon-on-insulator because of the high modal confinement of these waveguides. In this letter, we present two fabrication-friendly apodization techniques that are compatible with deep UV lithography and can be used in mass-production of photonic-integrated circuits. These techniques are reliable even for weak effective index modulation amplitude, thus opening the door to the fabrication of long and elaborate grating structures. © 2012 IEEE.

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