Search results for: M. Dagenais

Items from 1 to 20 out of 27 results

chapter

GaAs/InAs quantum dot high efficiency solar cell

Tian Li, Robert Bartolo, M. Dagenais

2013 IEEE Photonics Conference > 572 - 573

2013 IEEE Photonics Conference (IPC)

Near record conversion efficiency for a GaAs/InAs quantum dot solar cell is measured. Detailed measurements of external quantum efficiency are presented. Two different size quantum dots contribute to the generated photocurrent. Record short circuit currents are measured.

article

Carcinoma of the gallbladder: Patterns of presentation, prognostic factors and survival rate. An 11-year single centre experience

M. D'Hondt, R. Lapointe, Z. Benamira, H. Pottel, more

European Journal of Surgical Oncology > 2013 > 39 > 6 > 548-553

This report examines the patterns of presentation, prognostic factors and survival rate of all patients with gallbladder cancer (GBC) evaluated at our tertiary academic hospital over an 11-year period.A retrospective review of a prospectively collected database of all patients with GBC presenting between January 1998 and December 2008 was performed.102 GBC-patients were included: 69 women and 33 men...

chapter

Thermal impedance of epi-up and epi-down interband cascade lasers

A Chryssis, Geunmin Ryu, M Dagenais

2010 IEEE Photinic Society's 23rd Annual Meeting > 421 - 422

2010 23rd Annual Meeting of the IEEE Photonics Society (Formerly LEOS Annual Meeting)

Thermal impedance of epi-up and epi-down interband cascade lasers is reported. Two-dimensional heat diffusion model to simulate the temperature distribution in a 6 cascades ICL mounted epi-up or epi-down on an AIN submount is discussed. Lasers are etched through the active region, and they are gold electroplated to a thickness of about 5 μm on the epi-side. Thermal coefficient of 2 W/m-K for the InAs/AISb...

chapter

Fabrication of a thin film asymmetric tunneling diode using geometric field enhancement

Kwangsik Choi, M. Dagenais, M.M. Peckerar

2009 International Semiconductor Device Research Symposium > 1 - 2

2009 International Semiconductor Device Research Symposium (ISDRS 2009)

In this paper, we consider a metal-insulator-metal (MIM) diode as an infrared detector. Past research has successfully demonstrated the operation of these structures at infrared frequencies with an optimized antenna-coupling scheme. Rectifying incident signals is essential for detection.

chapter

Experimental demonstration of injection-locked Fabry-Perot lasers with integrated phase modulators

S. Taebi, S.S. Saini, M. Dagenais

2009 IEEE LEOS Annual Meeting Conference Proceedings > 652 - 653

LEOS 2009 -22nd Annuall Meeting of the IEEE Lasers and Electro-Optics Society. LEO 2009

An injection-locked Fabry-Perot laser with an integrated phase modulator is demonstrated for wavelength division multiplexed passive optical networks, which allows for adjusting the wavelength of the internal Fabry-Perot modes to match that of the input injected signal.

chapter

Automata-based approach for kernel trace analysis

G. Matni, M. Dagenais

2009 Canadian Conference on Electrical and Computer Engineering > 970 - 973

2009 Canadian Conference on Electrical and Computer Engineering (CCECE 2009)

This paper presents an automata-based approach for analyzing traces generated by the kernel of an operating system. We identified a list of typical patterns of problematic behavior, to look for in a trace, and selected an appropriate state machine language to describe them. These patterns were then fed into an off-line analyzer which efficiently and simultaneously checks for their occurrences even...

chapter

Incoherent optical frequency domain reflectometry for health monitoring of avionics fiber optics networks

G. Ryu, M. Dagenais, M. Dagenais

2008 IEEE Avionics, Fiber-Optics and Photonics Technology Conference > 15 - 16

2008 IEEE Avionics, Fiber-Optics and Photonics Technology Conference (AVFOP)

We present a highly sensitive, linear and high spatial resolution approach for the detection of flaws and spurious reflections in avionic optical fiber links based on the technique of incoherent optical frequency domain reflectometry (IOFDR). This approach allows built in test functionality. In particular, we demonstrate the technique of incoherent frequency modulated continuous wave optical frequency...

chapter

Performance analysis of virtual machines through tracing

P. Heidari, M. Desnoyers, M. Dagenais

2008 Canadian Conference on Electrical and Computer Engineering > 261 - 266

2008 Canadian Conference on Electrical and Computer Engineering - CCECE

This paper presents extensions to the Linux trace toolkit (LTT) for efficiently tracing complete systems, from the user level to the virtual machine system level and the Xen hypervisor layer. An automated benchmark was created to measure the overhead imposed by tracing and Xen paravirtualization, comparing the performance of systems, with and without virtualization and tracing. The results show a...

chapter

Tunable External Cavity Interband Cascade Laser

A.N. Chryssis, M. Dagenais, J.D. Bruno, J.L. Bradshaw

LEOS 2007 - IEEE Lasers and Electro-Optics Society Annual Meeting Conference Proceedings > 701 - 702

LEOS 2007. 20th Annual Meeting of the IEEE Lasers and Electro-Optics Society

We present a study of the tunability of an external cavity interband cascade laser. This tunable mid-IR light source has a broad tuning range of 300 nm (208 cm^-1) around 3.8 mum with a peak output power of 2 mW in the pulsed mode.

chapter

All-Optical Header Recognition Using a Semiconductor Optical Amplifier Switch Matrix

M. Dagenais, S. Saini, F. Toudeh-Fallah, R. Gyurek, more

2007 Photonics in Switching > 65 - 66

2007 Photonics in Switching

A 1 times 8 semiconductor optical amplifier switch is demonstrated. Experimental results are presented recognizing all possible addresses of a 3-bit sub-set out of an 8-bit address at 10 Gb/s. Noise propagation through the switch is studied.

chapter

Lithography, Plasmonics and Sub-wavelength Aperture Exposure Technology

Y. Ngu, M. Peckerar, Xiaoping Liu, M. Dagenais, more

2007 Conference on Lasers and Electro-Optics (CLEO) > 1 - 2

CLEO '07. 2007 Conference on Lasers and Electro-Optics

We report enhanced transmission of 250 nm radiation by sub-wavelength square aperture arrays on silver and demonstrate its use in optical lithography with far- reduced number of addressed pixels to produce very good edge acuity.

article

Monolayer Detection of Biochemical Agents Using Etched-Core Fiber Bragg Grating Sensors

S.S. Saini, C. Stanford, S.M. Lee, J. Park, more

IEEE Photonics Technology Letters > 2007 > 19 > 18 > 1341 - 1343

It is demonstrated that the etched-core fiber Bragg grating sensor can be used to detect down to a monolayer of biological and chemical agents immobilized on the surface of the fiber. Theoretical models based on calculating the effective index of the surrounding medium in the presence of immobilized layer(s) were developed and confirmed experimentally by immobilizing a monolayer of 3-aminopropyl-monoethoxydimethyl-silane...

article

Cholecystectomy using laparolift in a patient with fontan physiology

Geneviève Côté, Michel-Antoine Perrault, M. Dagenais, AY. Denault

Canadian Journal of Anesthesia/Journal canadien d'anesthésie > 2007 > 54 > 1 > 44604- 44604

chapter

Monolayer Detection Using Etched-core Fiber Bragg Grating Sensors

S. Saini, C. Stanford, S. Lee, J. Park, more

LEOS 2006 - 19th Annual Meeting of the IEEE Lasers and Electro-Optics Society > 669 - 670

2006 IEEE LEOS Annual Meeting Conference

In this paper, we show that the fiber Bragg grating sensor can be used to detect and differentiate the number of layers that are deposited on the fiber surface. A theory was developed for calculating the wavelength change as thin films of biological and chemical layers are immobilized on the surface of the fiber in the presence of a surrounding medium. A theory is developed and verified experimentally...

chapter

Enhanced sensitivity to index changes of the surrounding medium for high order modes of etched-core Fiber Bragg Grating sensors

A.N. Chryssis, S.S. Saini, S.M. Lee, M. Dagenais

2006 Conference on Lasers and Electro-Optics and 2006 Quantum Electronics and Laser Science Conference > 1 - 2

2006 Conference on Lasers & Electro-Optics/Quantum Electronics and Laser Science Conference (CLEO/QELS)

The sensitivity of the third order mode to an index change is increased by a factor 6 as compared to the fundamental mode for a fiber etched to a core diameter of 5 mum.

article

Kinetic tests comparison and interpretation for prediction of the Joutel tailings acid generation potential

M. Benzaazoua, B. Bussière, A.-M. Dagenais, M. Archambault

Environmental Geology > 2004 > 46 > 8 > 1086-1101

Five sulfide mine tailings coming from the Joutel mine tailing ponds (Quebec, Canada) were tested by the humidity cell test (30 to 52 cycles duration) and the column test (11 to 12 cycles duration). The objectives of this study were twofold. First, there was the determination of the tailings acid generation potential for site reclamation. Second, there was the kinetic test comparison for understanding...

chapter

150 mW high-power angled-stripe superluminescent diode at 1550 nm

S.S. Saini, S. Merritt, O. Konoplev, Y. Hu, more

Conference on Lasers and Electro-Optics, 2004. (CLEO). > 1 > 3 pp. vol.1

Conference on Lasers and Electro-Optics (CLEO)

A 1550 nm superluminescent diode is realized with greater than 150 mW output power at 15/spl deg/C with a spectral bandwidth of 40 nm and spectral modulation of less than 2 dB.

chapter

Semiconductor optical amplifier for CWDM operating over 1540-1620 nm

S. Park, R. Leavitt, R. Enck, V. Luciani, more

Conference on Lasers and Electro-Optics, 2004. (CLEO). > 1 > 2 pp. vol.1

Conference on Lasers and Electro-Optics (CLEO)

A semiconductor optical amplifier was developed for CWDM operating over 1540-1620 nm. Over this band, 24 dB maximum chip gain was obtained with less than 4.3 dB gain flatness and more than 14.6 dBm saturation power.

chapter

High performance and highly functional semiconductor optical amplifiers based on hybrid and monolithic integration

M. Dagenais, P.S. Heim, S.W. Wilson, S.S. Saini, more

53rd Electronic Components and Technology Conference, 2003. Proceedings. > 1291 - 1294

53rd Electronic Components and Technology Conference, 2003. Proceedings.

article

Lack of relationship between preoperative measures of the severity of cirrhosis and short-term survival after liver transplantation

M Deschenes, JP Villeneuve, M Dagenais, D Fenyves, more

Liver Transplantation > 1997 > 3 > 5 > 532-537

The purpose of this study was to evaluate the prognostic value of clinical measures of the severity of disease in cirrhotic patients who were candidates for liver transplantation at our institution. The records of the 132 cirrhotic patients who were candidates for a first transplantation between January 1, 1987, and December 31, 1994, were reviewed. One hundred nine patients (82.6%) received grafts,...

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INFONA - science communication portal

Search results for: M. Dagenais

GaAs/InAs quantum dot high efficiency solar cell

Carcinoma of the gallbladder: Patterns of presentation, prognostic factors and survival rate. An 11-year single centre experience

Thermal impedance of epi-up and epi-down interband cascade lasers

Fabrication of a thin film asymmetric tunneling diode using geometric field enhancement

Experimental demonstration of injection-locked Fabry-Perot lasers with integrated phase modulators

Automata-based approach for kernel trace analysis

Incoherent optical frequency domain reflectometry for health monitoring of avionics fiber optics networks

Performance analysis of virtual machines through tracing

Tunable External Cavity Interband Cascade Laser

All-Optical Header Recognition Using a Semiconductor Optical Amplifier Switch Matrix

Lithography, Plasmonics and Sub-wavelength Aperture Exposure Technology

Monolayer Detection of Biochemical Agents Using Etched-Core Fiber Bragg Grating Sensors

Cholecystectomy using laparolift in a patient with fontan physiology

Monolayer Detection Using Etched-core Fiber Bragg Grating Sensors

Enhanced sensitivity to index changes of the surrounding medium for high order modes of etched-core Fiber Bragg Grating sensors

Kinetic tests comparison and interpretation for prediction of the Joutel tailings acid generation potential

150 mW high-power angled-stripe superluminescent diode at 1550 nm

Semiconductor optical amplifier for CWDM operating over 1540-1620 nm

High performance and highly functional semiconductor optical amplifiers based on hybrid and monolithic integration

Lack of relationship between preoperative measures of the severity of cirrhosis and short-term survival after liver transplantation

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