R. López‐Estopier
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View article: Fused biconical fiber-optic acoustic and optical couplers
Fused biconical fiber-optic acoustic and optical couplers Open
An experimental study of acoustic and optical couplers is reported. The couplers are fabricated from the fusion of two single-mode optical fibers using a standard fusing and pulling technique. First, we investigate pure acoustic couplers w…
View article: The nonlinear optical loop mirror: soliton and noise-like pulse emission in a figure-eight fiber laser
The nonlinear optical loop mirror: soliton and noise-like pulse emission in a figure-eight fiber laser Open
In this article, a symmetrical nonlinear optical loop mirror (NOLM) exhibiting a polarization-dependent transmission is evaluated to generate optical pulse emission in a figure-eight fiber laser in the soliton and noise-like pulse (NLP) re…
View article: Broadband tuning of a long-cavity all-fiber mode-locked thulium-doped fiber laser using an acousto-optic bandpass filter
Broadband tuning of a long-cavity all-fiber mode-locked thulium-doped fiber laser using an acousto-optic bandpass filter Open
A long-cavity passively mode-locked thulium-doped all-fiber laser is reported incorporating a tapered acousto-optic tunable bandpass filter (AOTBF). The operation of the AOTBF relies on the intermodal coupling between core and cladding mod…
View article: Q-switching and mode locking pulse generation from an all-fiber ring laser by intermodal acousto-optic bandpass modulation
Q-switching and mode locking pulse generation from an all-fiber ring laser by intermodal acousto-optic bandpass modulation Open
Q-switched and mode-locked (QML) pulse generation from an all-fiber ring laser based on intermodal acousto-optic bandpass modulation is reported. The modulator relies on full-acousto-optic mode re-coupling cycle induced by a standing flexu…
View article: MOS Meets NEMS: The Born of Hybrid Devices
MOS Meets NEMS: The Born of Hybrid Devices Open
Nowadays, the semiconductor industry is reaching an impasse due to the scaling-down process according to Moore’s Law, initiated back in 1960s, for the Metal-Oxide-Technology in use. To overcome such issue, the semiconductor industry starte…
View article: In-Fiber Acousto-Optic Interaction Based on Flexural Acoustic Waves and Its Application to Fiber Modulators
In-Fiber Acousto-Optic Interaction Based on Flexural Acoustic Waves and Its Application to Fiber Modulators Open
The design and implementation of in-fiber acousto-optic (AO) devices based on acoustic flexural waves are presented. The AO interaction is demonstrated to be an efficient mechanism for the development of AO tunable filters and modulators. …
View article: Real-time optical monitoring of semiconductor epitaxial growth
Real-time optical monitoring of semiconductor epitaxial growth Open
We report on time-resolved Reflectance Anisotropy Spectroscopy (RAS) measurements carried out during the molecular beam epitaxial growth of GaAs (001). Growth started on a c(4x4) reconstructed surface which changed to (2x4) and then to (4x…
View article: Flat supercontinuum generation pumped by amplified noise-like pulses from a figure-eight erbium-doped fiber laser
Flat supercontinuum generation pumped by amplified noise-like pulses from a figure-eight erbium-doped fiber laser Open
The conditions to obtain noise-like pulses (NLPs) from a figure-eight fiber laser (F8L) and their application for supercontinuum (SC) generation in the anomalous dispersion regime are reported. The F8L is designed to remove the undesired l…
View article: High Sensitivity Refractive Index Sensor Based on Highly Overcoupled Tapered Fiber-Optic Couplers
High Sensitivity Refractive Index Sensor Based on Highly Overcoupled Tapered Fiber-Optic Couplers Open
In this paper, a simple and compact fiber-optic sensor based on an overcoupled tapered fiber coupler is studied. The coupler is fabricated to be operated well beyond the initial coupling cycles, where the rapid exchange of energy between o…
View article: Characterization of Off Stoichiometric Silicon Oxide by Thermo, Cathode, and Photo-Luminescence
Characterization of Off Stoichiometric Silicon Oxide by Thermo, Cathode, and Photo-Luminescence Open
Off Stoichiometric Silicon Oxide, or Silicon Rich Oxide (SRO), obtained by LPCVD was studied by Photo, Cathode and Thermo luminescence.The Silicon excess in the SRO films varied between 2 and 12 % at.In the deposited samples, the luminesce…
View article: Silicon-Rich Oxide Obtained by Low-Pressure Chemical Vapor Deposition to Develop Silicon Light Sources
Silicon-Rich Oxide Obtained by Low-Pressure Chemical Vapor Deposition to Develop Silicon Light Sources Open
Off stoichiometric silicon oxide, also known as silicon-rich oxide (SRO), is a light-emitting material that is compatible with silicon technology; therefore, it is a good candidate to be used as a light source in all-silicon optoelectronic…