Study of Optimized Coupling Based on Micro-lensed Fibers for Fibers and Photonic Integrated Circuits in the Framework of Telecommunications and Sensing Applications

Le, Sy Dat; Delcourt, Enguerran; Girault, Pauline; Gutierrez, Aldo; Azuelos, Paul; Lorrain, Nathalie; Bodiou, Loïc; Poffo, Luiz; Goujon, Jean-Marc; Dumeige, Yannick; Hardy, Isabelle; Rochard, Philippe; Lemaître, Jonathan; Pirasteh, Parastesh; Guendouz, Mohammed; Chartier, Thierry; Quétél, Lionel; Claudot, Sébastien; Charrier, Joël; Thual, Monique

doi:10.15625/0868-3166/26/4/8951

Cited by 8 publications

(5 citation statements)

References 17 publications

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“…The sensor is characterized with a fibered broadband 1500-1625nm tunable laser source (Yenista Tunics T100S-HP). Its 10 mW output power is coupled into the SU8 waveguide using a lensed fiber with a mode radius of 2.5 μm mounted on micro-alignment bench fabricated in the lab [23]. A second lensed single mode fiber is used to couple the output of the waveguide to a power-meter.…”

Section: Experiments and Resultsmentioning

confidence: 99%

High sensitivity optical biosensor based on polymer materials and using the Vernier effect

Azuelos¹,

Girault²,

Lorrain³

et al. 2017

Opt. Express

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We demonstrate the fabrication of a Vernier effect SU8/PMATRIFE polymer optical biosensor with high homogeneous sensitivity using a standard photolithography process. The sensor is based on one micro-resonator embedded on each arm of a Mach-Zehnder interferometer. Measurements are based on the refractive index variation of the optical waveguide superstrate with different concentrations of glucose solutions. The sensitivity of the sensor has been measured as 17558 nm/RIU and the limit of detection has been estimated to 1.1.10 RIU.

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Section: Experiments and Resultsmentioning

confidence: 99%

High sensitivity optical biosensor based on polymer materials and using the Vernier effect

Azuelos¹,

Girault²,

Lorrain³

et al. 2017

Opt. Express

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“…Moreover, coupling losses stem from two sources namely mode mismatch losses (α d ) and Fresnel reflection losses (α f ). The mode mismatch losses come from the fact that the mode diameter of the micro-lensed fiber used for the injection of light in the waveguide [23] cannot be fully adapted to the diameter of the fundamental mode of the waveguide. The diameter of the fundamental mode of the waveguide is smaller than the mode diameter (2.0 ± 0.2 µ m) of the micro-lensed fiber.…”

Section: Linear Optical Characterizationmentioning

confidence: 99%

“…4 in order to determine their nonlinear propagation characteristics. 9.6 ps pulses with 19.3 MHz repetition rate at 1550 nm were coupled into the waveguide using a micro-lensed fiber mounted on a micro-alignment bench [23]. A variable optical attenuator was used to control the input power and a second micro-lensed fiber was used to couple the output of the waveguide to an optical spectrum analyzer.…”

Section: Self-phase Modulationmentioning

confidence: 99%

Self-phase modulation and four-wave mixing in a chalcogenide ridge waveguide

Delcourt¹,

Jebali²,

Bodiou³

et al. 2020

Opt. Mater. Express

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Third order optical nonlinear effects relying on the instantaneous Kerr effect are investigated in a straight chalcogenide ridge waveguide. The sample consists of a GeSbSe film deposited on a thermally oxidized silicon substrate. Ridge waveguides were processed using photolithography and dry etching techniques. From a 1.1 cm long integrated GeSbSe device, self-phase modulation with a maximum nonlinear phase shift of 2.02 π for a peak power of 15.8 W and four-wave mixing with an external conversion efficiency of −42.6 dB for a pump power of 28 mW are demonstrated. Experimental results show a good agreement with calculations.

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“…From that point of view, the traditional end-fire butting method involving coupling with an optical fiber is rather demanding since it necessitates a rigorous end facet polishing of the waveguide and, in the case of thin waveguides, it requires a very critical fiber-waveguide alignment tolerance. Several alternative approaches have thus been proposed, such as micro-lensed fibers [ 10 ] or different variants of taper couplers [ 11 , 12 , 13 ]. However, these options still suppose waveguide (or taper) facet polishing and they do not solve coupling issues with fibers, whose diameter remains much greater than the height (250 nm) of waveguides considered in this work, even for micro-lenses of very small mode-field diameter (~2 µm for standard micro-lensed fibers).…”

Section: Introductionmentioning

confidence: 99%

Study and Optimization of a Micro-Structured Waveguiding and Fluorescent Sol-Gel Architecture

et al. 2023

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Channel waveguides with diffraction gratings at their input and output for light injection and extraction, respectively, constitute the key components for applications in integrated optics and photonics. Here, we report for the first time on such fluorescent micro-structured architecture entirely elaborated on glass by sol-gel processing. This architecture particularly takes advantage of a high-refractive index and transparent titanium oxide-based, sol-gel photoresist that can be imprinted through a single photolithography step. This resist enabled us to photo-imprint the input and output gratings on a photo-imprinted channel waveguide doped with a ruthenium complex fluorophore (Rudpp). In this paper, the elaboration conditions and optical characterizations of derived architectures are presented and discussed with respect to optical simulations. We firstly show how the optimization of a two-step deposition/insolation sol-gel procedure leads to reproducible and uniform grating/waveguide architectures elaborated on rather large dimensions. Then, we show how this reproducibility and uniformity govern the reliability of fluorescence measurements in waveguiding configuration. These measurements demonstrate that: (i) our sol-gel architecture is well adapted to the efficient channel–waveguide/diffraction grating coupling at the Rudpp excitation and emission wavelengths; (ii) it enables an efficient propagation of the emission signal in the core of the waveguide allowing its photo-detection after extraction through the output grating; and (iii) it is affected by very reduced parasitic mechanisms, such as propagation losses and photobleaching features. This work constitutes a promising preliminary step toward the integration of our architecture in a microfluidic platform for further fluorescence measurements in liquid medium and waveguiding configuration.

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Study of Optimized Coupling Based on Micro-lensed Fibers for Fibers and Photonic Integrated Circuits in the Framework of Telecommunications and Sensing Applications

Cited by 8 publications

References 17 publications

High sensitivity optical biosensor based on polymer materials and using the Vernier effect

High sensitivity optical biosensor based on polymer materials and using the Vernier effect

Self-phase modulation and four-wave mixing in a chalcogenide ridge waveguide

Study and Optimization of a Micro-Structured Waveguiding and Fluorescent Sol-Gel Architecture

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