Jacques Albert
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View article: Fiber guided mode dispersion spectroscopy via control of spatial dimensions
Fiber guided mode dispersion spectroscopy via control of spatial dimensions Open
The development of next-generation optical fiber grating devices is strongly influenced by intricate grating design, which must effectively capture guided mode dispersion. Understanding this dispersion is crucial for enhancing measurement …
View article: Scan-Free KrF Laser Phase Tuning of Non-Hydrogen Loaded Planar Lightwave Circuit Interferometer Arrays
Scan-Free KrF Laser Phase Tuning of Non-Hydrogen Loaded Planar Lightwave Circuit Interferometer Arrays Open
The large-scale deployment of planar lightwave circuits (PLCs) is becoming a reality, but high yield and precise phase control continues to pose challenges in mass production. We demonstrate a scan-free protocol employing a large emitting …
View article: Dual-Mode Comb Plasmonic Optical Fiber Sensing
Dual-Mode Comb Plasmonic Optical Fiber Sensing Open
Surface plasmon (SP) excitation in metal-coated tilted fiber Bragg gratings (TFBGs) has been a focal point for highly sensitive surface biosensing. Previous efforts focused on uniform metal layer deposition around the TFBG cross section an…
View article: Recent advances and current trends in optical fiber biosensors based on tilted fiber Bragg gratings
Recent advances and current trends in optical fiber biosensors based on tilted fiber Bragg gratings Open
Tilted fiber Bragg gratings (TFBGs) have been shown to possess many unique features that allow for the development of accurate sensors, especially in the biochemical realm, without excessive investments in fabrication or interrogation cost…
View article: In-situ monitoring of refractive index change during water-ice phase transition with a multiresonant fiber grating
In-situ monitoring of refractive index change during water-ice phase transition with a multiresonant fiber grating Open
In-situ monitoring of refractive index changes during a liquid-solid phase transition is achieved by measurement of the transmission spectrum from a single tilted fiber Bragg grating immersed in water. Differential wavelength shifts of mul…
View article: All-fiber ellipsometer for nanoscale dielectric coatings
All-fiber ellipsometer for nanoscale dielectric coatings Open
Multiple mode resonance shifts in tilted fiber Bragg gratings (TFBGs) are used to simultaneously measure the thickness and the refractive index of TiO2 thin films formed by Atomic Layer Deposition (ALD) on optical fibers. This is achieved …
View article: Mode Transitions and Thickness Measurements During Deposition of Nanoscale TiO<sub>2</sub> Coatings on Tilted Fiber Bragg Gratings
Mode Transitions and Thickness Measurements During Deposition of Nanoscale TiO<sub>2</sub> Coatings on Tilted Fiber Bragg Gratings Open
The mode transition is a phenomenon observed in
\nthin film coated long period fiber gratings (LPGs) and singlemode multimode single-mode (SMS) fibers for certain values of
\nthe coating thickness and refractive index, resulting in increas…
View article: Strong cladding mode excitation in ultrathin fiber inscribed Bragg grating with ultraviolet photosensitivity
Strong cladding mode excitation in ultrathin fiber inscribed Bragg grating with ultraviolet photosensitivity Open
Strong UV-written Bragg gratings written in 50 µm-diameter cladding single mode fibers compatible with conventional fiber couple core guided light to dozens of cladding modes distributed across 140 nm in the 1400-1600 nm region, without th…
View article: Operando monitoring of ion activities in aqueous batteries with plasmonic fiber-optic sensors
Operando monitoring of ion activities in aqueous batteries with plasmonic fiber-optic sensors Open
Understanding ion transport kinetics and electrolyte-electrode interactions at electrode surfaces of batteries in operation is essential to determine their performance and state of health. However, it remains a challenging task to capture …
View article: Mode-division and spatial-division optical fiber sensors
Mode-division and spatial-division optical fiber sensors Open
The aim of this paper is to provide a comprehensive review of mode-division and spatial-division optical fiber sensors, mainly encompassing interferometers and advanced fiber gratings. Compared with their single-mode counterparts, which ha…
View article: Optical detection of the percolation threshold of nanoscale silver coatings with optical fiber gratings
Optical detection of the percolation threshold of nanoscale silver coatings with optical fiber gratings Open
The metal-to-dielectric transition of silver films deposited on single-mode optical fibers is monitored by measurements of the transmission spectra of tilted fiber Bragg gratings inscribed in the core of the fiber. In situ, real-time measu…
View article: High-resolution interrogation of tilted fiber Bragg gratings using an extended range dual wavelength differential detection
High-resolution interrogation of tilted fiber Bragg gratings using an extended range dual wavelength differential detection Open
An extended range dual wavelength differential detection technique for interrogating fiber Bragg grating sensors is implemented for the measurement of tilted fiber Bragg gratings. The dynamic chirp of a single DFB laser diode modulated wit…
View article: Microfluidic flow direction and rate vector sensor based on a partially gold-coated TFBG
Microfluidic flow direction and rate vector sensor based on a partially gold-coated TFBG Open
In microfluidic chips applications, the monitoring of the rate and the direction of a microfluidic flow is very important. Here, we demonstrate a liquid flow rate and a direction sensor using a partially gold-coated tilted fiber Bragg grat…
View article: 40 GHz-rate all-optical cross-modulation of core-guided near infrared light in single mode fiber by surface plasmons on gold-coated tilted fiber Bragg gratings
40 GHz-rate all-optical cross-modulation of core-guided near infrared light in single mode fiber by surface plasmons on gold-coated tilted fiber Bragg gratings Open
All-optical control of Surface Plasmon Polaritons (SPPs) can switch light with high speed and a large signal to noise ratio. We demonstrate 25 ps-time scale switching of continuous wave light by pump pulses copropagating in the same single…
View article: Symmetry selective cladding modes coupling in ultrafast-written fiber Bragg gratings in two-mode fiber
Symmetry selective cladding modes coupling in ultrafast-written fiber Bragg gratings in two-mode fiber Open
The lower order cladding mode resonances of a fiber Bragg grating (FBG) are sensitive to fiber bending but their spectral density makes their response to bending very complex. In this work we present a simple method to reduce and control t…
View article: Cytokeratins Biosensing Using Tilted Fiber Gratings
Cytokeratins Biosensing Using Tilted Fiber Gratings Open
Optical fiber gratings have widely proven their applicability in biosensing, especially when they are coupled with antibodies for specific antigen recognition. While this is customarily done with fibers coated by a thin metal film to benef…
View article: In situ plasmonic optical fiber detection of the state of charge of supercapacitors for renewable energy storage
In situ plasmonic optical fiber detection of the state of charge of supercapacitors for renewable energy storage Open
In situ and continuous monitoring of electrochemical activity is key to understanding and evaluating the operation mechanism and efficiency of energy storage devices. However, this task remains challenging. For example, the present methods…
View article: Hypersensitivity and Applications of Cladding Modes of Optical Fibers Coated with Nanoscale Metal Layers
Hypersensitivity and Applications of Cladding Modes of Optical Fibers Coated with Nanoscale Metal Layers Open
Theoretical and experimental results are presented to show that the complex effective index of the modes of optical fibers coated with non-uniform metal coatings of gold, silver, copper, or palladium, with thicknesses between 0 and 20 nm, …
View article: Hydrogen peroxide and glucose concentration measurement using optical fiber grating sensors with corrodible plasmonic nanocoatings
Hydrogen peroxide and glucose concentration measurement using optical fiber grating sensors with corrodible plasmonic nanocoatings Open
We propose and demonstrate hydrogen peroxide (H2O2) and glucose concentration measurements using a plasmonic optical fiber sensor. The sensor utilizes a tilted fiber Bragg grating (TFBG) written in standard single mode communication fiber.…
View article: Measurements of milli-Newton surface tension forces with tilted fiber Bragg gratings
Measurements of milli-Newton surface tension forces with tilted fiber Bragg gratings Open
Small lateral forces (lower than 0.1 N) cannot normally be measured with conventional single-mode fiber-based sensors because of the high value of their Young modulus (>70 GPa). Here we demonstrate the measurement of lateral forces in the …
View article: Intrinsic second harmonic generation from un-poled doped silica multilayered thin films
Intrinsic second harmonic generation from un-poled doped silica multilayered thin films Open
Second harmonic light generation (SHG) was observed from as-deposited silica glass thin films suitable for waveguiding, without the need for an inversion symmetrybreaking poling treatment. Thin film stacks of up to 16 layers of alternating…
View article: A true fiber optic refractometer
A true fiber optic refractometer Open
The best instrument to measure the refractive index of liquids is the Abbe refractometer which can only provide accuracies of the order of 10 −5 at visible wavelengths and 10 −4 in the near infrared. Here we present a technique by which th…
View article: High resolution fiber optic surface plasmon resonance sensors with single-sided gold coatings
High resolution fiber optic surface plasmon resonance sensors with single-sided gold coatings Open
The surface plasmon resonance (SPR) performance of gold coated tilted fiber Bragg gratings (TFBG) at near infrared wavelengths is evaluated as a function of the angle between the tilt plane orientation and the direction of single- and doub…
View article: Plasmonic fiber-optic vector magnetometer
Plasmonic fiber-optic vector magnetometer Open
A compact fiber-optic vector magnetometer based on directional scattering between polarized plasmon waves and ferro-magnetic nanoparticles is demonstrated. The sensor configuration reported in this work uses a short section of tilted fiber…