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Papers by Minh Sang Bùi Huy

Morrison au seuil du paradis et de l'enfer

FRANCIS SCOTT FITZGERALD La nuit noire de l'âme

Microstructured fibre bragg grating sensor

$Research paper thumbnail of Fiber Bragg grating photowriting in microstructured optical fibers for sensing application based on refractive index measurement$

Proceedings of Spie the International Society For Optical Engineering, May 1, 2005

In this paper we present results relative to Fiber Bragg Grating (FBG) photowritten in two kinds ... more In this paper we present results relative to Fiber Bragg Grating (FBG) photowritten in two kinds of Ge-doped microstructured optical fiber cores devoted to sensing applications. A cross comparison between theoretical and experimental modal field patterns is carried out. We present the first values of spectral sensitivity of Bragg grating, in relation to the refractive index of the substance inserted into the holes.

Truman Capote une icône américaine

Stephen King : le fantastique horrifique

Le Magazine Litteraire, Jul 1, 2003

Un avant-goût de septembre

« Nulle part à ma place »

« On ne se soucie plus assez de la langue aujourd'hui »

System and method for management of mobile device

Method and Apparatus for Psychomotor and Psycholinguistic Prediction on Touch Based Device

Charif Majdalani: une odyssée dans le désert

Magazine Litteraire, 2007

Digital Video Broacast Return Channel Satellite (DVB-RCS) Hub Installation and Integration for DISA and US CENTCOM

MILCOM 2006, 2006

... James (Jake) Obi Space and Naval Warfare Systems Center Charleston, South Carolina Veloris (S... more ... James (Jake) Obi Space and Naval Warfare Systems Center Charleston, South Carolina Veloris (Sonny) Marshall - Keith Dyson Marshall Communications Corp Ashburn, Virginia Minh Nguyen Booz Allen Hamilton Herndon, Virginia ABSTRACT ...

$Research paper thumbnail of Tilted Fiber Bragg Grating photowritten in microstructured optical fiber for improved refractive index measurement$

Optics express, Jan 30, 2006

We report what we believe to be the first Tilted short-period Fiber Bragg Grating photowritten in... more We report what we believe to be the first Tilted short-period Fiber Bragg Grating photowritten in a microstructured optical fiber for refractive index measurement. We investigate the spectral sensitivity of Tilted Fiber Bragg Grating to refractive index liquid inserted into the holes of a multimode microstructured fiber. We measure the wavelength shift of the first four modes experimentally observed when calibrated oils are inserted into the fiber holes, and thus we determine the refractive index resolution for each of these modes. Moreover, a cross comparison between experimental and simulation results of a modal analysis is performed. Two simulation tools are used, respectively based on the localized functions method and on a finite element method. All results are in very good agreement.

$Research paper thumbnail of Three-hole microstructured optical fiber for efficient fiber Bragg grating refractometer$

Optics letters, Jan 15, 2007

We present a photosensitive three-hole microstructured optical fiber specifically designed to imp... more We present a photosensitive three-hole microstructured optical fiber specifically designed to improve the refractive index sensitivity of a standard fiber Bragg grating (FBG) sensor photowritten in the suspended Ge-doped silica core. We describe the specific photowriting procedure used to realize gratings in such a fiber. We then determine their spectral sensitivity to the refractive index changes of material filling the holes surrounding the core. The sensitivity is compared with that of standard FBGs photowritten in a six-hole fiber with a larger core diameter. We demonstrate an improvement in the sensitivity by two orders of magnitude and reach a resolution of 3 x 10(-5) and 6 x 10(-6) around mean refractive index values of 1.33 and 1.40, respectively.

The endosomal/lysosomal distribution of cathepsins (cat) B, L and S and N-acetyl-??-D-glucosaminidase (NAG) is differentially modulated in murine cell lines of microglial and monocytic origin

GBM Annual Fall meeting Halle 2002, 2002

Optics Express, 2008

We demonstrate that the resonance wavelength of fiber Bragg gratings photowritten in the core of ... more We demonstrate that the resonance wavelength of fiber Bragg gratings photowritten in the core of microstructured optical fibers can be efficiently stabilized versus temperature by inserting suitable refractive index materials with a negative thermal sensitivity into the holes. By these means, the effective index of the guided mode undergoes thermal variations which counterbalance the effect of the grating period thermal drift. The residual excursion of the resonance wavelength can be limited to less than ± 10 pm over a 70 °C range of temperature into Microstructured Optical Fibers (MOFs) having realistic geometrical parameters, and using existing refractive index materials. Low cost passively stabilized reflectors with insertion loss lower than 0.3 dB can be realized by splicing single mode fibers at both ends of a short length of a filled MOF including the fiber Bragg grating.

Journal of the Optical Society of America B, 2010

We experimentally and theoretically study self-phase modulation by Kerr effect in a liquid filled... more We experimentally and theoretically study self-phase modulation by Kerr effect in a liquid filled hollow core photonic crystal fiber. We perform a complete characterization of the linear optical properties of the hollow core photonic band gap fiber filled with deuterated acetone to determine all the characteristics of the propagation mode. The nonlinear coefficient of the fiber is determined by fitting the output spectra broadened by self-phase modulation with a new analytical expression giving the spectra of a secant hyperbolic pulse transmitted through a Kerr media. The experiment allows a precise determination of the nonlinear index change ! n 2 I of acetone-d6 equal to (1.15±0.17)x10-19 m 2 W-1 .