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An increasing number of scientists and engineers are now working as freelance consultants, some out of choice, some because of the telecom bust. Based on author own experience, and bearing in mind the wide span of possible types of consulting work, author will discuss the pros and cons, and the do and don'ts of working as an independent consultant
We describe research activities in the Photonic Systems Group located in the Department of Electrical and Computer Engineering at McGill University. We are working on several different topics: optoelectronics, burst mode receivers, and agile optical networks; photonic crystals and plasmonic devices; ultrafast photonics and fiber optics; and all optical processing
The Institut national de la recherche scientifique - centre Energie, Materiaux et Telecommunications (INRS-EMT) is a research center providing high quality education at the M. Sc. and Ph. D. levels. We will review the various active research programs in ultrafast optics and photonics at the INRS-EMT
Research topics in optical communications at Queen's University include all-optical signal processing for wavelength conversion and regeneration, all-optical clock recovery, arbitrary optical waveform generation, transmission over multi-mode fiber, optical amplification, optical time division demultiplexing, and dispersion compensation using fiber Bragg gratings
This report review the packaging and application technology of high power white LEDs including the lower thermal resistance and high reliable packaging of a group of LEDs, unsymmetrical three-dimensional optical system research based on non-image optics and the actual optical system design (such as street lamp) with specific luminous intensity distribution
Gravitational waves are among the most elusive signals from far out in the Universe. Currently astrophysicists in Europe and the USA have their first real chance of finding gravitational waves using laser interferometers, with km scale arms
In this paper attosecond measurement relies on a phase "gate". The phase of attosecond pulses is easily manipulated because attosecond pulses arise in an interferometric process - the interferometer formed by an electron being removed by the atom, propagating in the laser field and re-colliding with the parent ion where the interference occurs. Slightly modifying (gating) the phase of the...
Long period grating provide a perturbation allowing the coupling of two asynchronous copropagating compound mode or supermodes. In a nonlinear directional coupler (NLDC), by varying the intensity, the output will change according to the relative phase between the two supermodes. By combining these effects, nonlinear grating assisted couplers have been suggested. In this paper we are proposing, to...
A method to achieve an extremely wide and flexible control of the group velocity in an optical fiber using stimulated Brillouin scattering is presented. Group velocities below 71,000 km/s on one hand, well exceeding the speed of light in vacuum on the other hand and even negative group velocities can readily be obtained
We present experimental and theoretical investigations of slow light phenomenon in a 1300 nm GaInNAs vertical-cavity semiconductor optical amplifier. Demonstration of tunable group delays between 25 and 100 ps by gain change and their analysis are reported
We present technologies required for integration of microoptic and waveguiding elements into optical boards to enable 3D signal routing. Prototype optical interconnect modules at 10+ Gbps will be presented
Three-dimensional (3-D) optical wiring is demonstrated by fabricating two types of 3-D optical circuits: "stacked waveguide films with surface-normal mirrors" and "waveguide films with vertical waveguides" using optical Z-connections and self-organized lightwave network (SOLNET)
DWDM PON architectures are of high interest and are on the way to becoming commercially realized, the bandwidth can be substantially scaled up compared to common PON networks concepts. AWG based structures for MUX/DEMUX applications in WDM-PON networks are ideal, adapting perfectly to PON architectures, allowing cyclic character and are leveraging the state of the art PLC processing techniques. The...
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