A Fiber Optic Fabry–Perot Cavity Sensor for the Probing of Oily Samples

Melissinaki, Vasileia; Farsari, Maria; Pissadakis, Stavros

doi:10.3390/fib5010001

Cited by 13 publications

(6 citation statements)

References 38 publications

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“…However, the challenge is that the tiny size and large aspect-ratio of optical fibers make the fabrication of optical fiber-tip devices difficult by using conventional microfabrication technologies. Although a diversity of fabrication techniques—such as photolithography [ 16 ], nanoimprinting [ 17 ], interference lithography [ 18 ], electron-beam lithography [ 19 ], focused ion-beam milling [ 20 ], multiphoton polymerization [ 21 , 22 , 23 , 24 , 25 ]—have been proposed to overcome this challenge, most of them have common drawbacks of being time consuming, having material specificity, and lacking flexibility.…”

Section: Introductionmentioning

confidence: 99%

Optical Fiber-Tip Sensors Based on In-Situ µ-Printed Polymer Suspended-Microbeams

Yao

Ouyang

et al. 2018

Sensors

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Miniature optical fiber-tip sensors based on directly µ-printed polymer suspended-microbeams are presented. With an in-house optical 3D μ-printing technology, SU-8 suspended-microbeams are fabricated in situ to form Fabry–Pérot (FP) micro-interferometers on the end face of standard single-mode optical fiber. Optical reflection spectra of the fabricated FP micro-interferometers are measured and fast Fourier transform is applied to analyze the cavity of micro-interferometers. The applications of the optical fiber-tip sensors for refractive index (RI) sensing and pressure sensing, which showed 917.3 nm/RIU to RI change and 4.29 nm/MPa to pressure change, respectively, are demonstrated in the experiments. The sensors and their optical µ-printing method unveil a new strategy to integrate complicated microcomponents on optical fibers toward ‘lab-on-fiber’ devices and applications.

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Section: Introductionmentioning

confidence: 99%

Optical Fiber-Tip Sensors Based on In-Situ µ-Printed Polymer Suspended-Microbeams

Yao

Ouyang

et al. 2018

Sensors

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“…An hybrid organic–inorganic photoresin SZ2080, with reported refractive index of n SZ 2080 = 1.52 at 589.3 nm, [ 31 ] was photosensitized with 1 wt

\%

concentration of Irgacure 369 (2‐benzyl‐2‐(dimethylamino)‐4'‐morpholinobutyrophenone) to enhance the polymerization reaction. [ 32 ] The sol–gel photopolymer was drop‐casted on a glass coverslip ( n glass = 1.52, thickness of 130–170 µm) and gradually dried on a hot plate.…”

Section: Methodsmentioning

confidence: 99%

Single‐Step 3D Printing of Micro‐Optics with Adjustable Refractive Index by Ultrafast Laser Nanolithography

Gonzalez‐Hernandez

Sanchez-Padilla

Gailevičius

et al. 2023

Advanced Optical Materials

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Laser exposure defines voxel's dimensions as essential building blocks in direct write 3D nanolithography. However, the exposure conditions not only influence the size of the produced features but also their optical properties. This empowers the realization of an adjustable refractive index out of single material by varying the writing strategy while preserving laser 3D nanolithography's flexibility in geometry and high resolution. Here, the refractive index for the 450-1600 nm spectral range of the micro-optics out of SZ2080 hybrid polymer is systematically studied by applying ray and wave optics approaches followed by optical resolution analysis. It reveals the exact value of the laser-printed components instead of the determination assessed by other techniques measuring thin films or bulky volumes of the investigated substance. The studied micro-lenses are of below 100 μm in dimensions and a clear distinction in their performance on low and high exposure doses is found by analyzing it in all different approaches and validating using different lithography setups. Findings reveal the complexity of the refractive index of the 3D micro-optics which is influenced by the material density and morphology. A route for freedom in 3D printing shape and refractive index can be realized by the technological optimization of delicate exposure control in ultrafast laser nanolithography.

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“…The degree of change correlates with the gas molecule concentration. [178][179][180] This approach expands the range of detectable organic volatile compounds beyond the limitations of chemisorption-based detection. However, achieving ultra-high detection accuracy through chemical adsorption requires strict control over pore quantity, size, and adsorption material selection.…”

Section: Reflector Materialsmentioning

confidence: 99%

Femtosecond Laser 3D Nano‐Printing for Functionalization of Optical Fiber Tips

Bian,

Hu,

et al. 2024

Laser & Photonics Reviews

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Functionalized optical fiber tips featuring miniature sizes and diverse functions have broken the limitations of traditional optical fiber with fixed shapes and single materials, significantly enriching the application scenarios in communication, sensing, imaging, and other fields. However, the unconventional shape presents challenges in manufacturing arbitrarily sophisticated 3D micro/nano structures on optical fiber tips. Femtosecond laser 3D nano‐printing (FL‐3DNp) technology injects new vitality into the functionalization of fiber tips due to its high‐precision, customizable structure, and real 3D processing abilities, as well as advantages of non‐vacuum, maskless, and plentiful materials. This paper extensively compares the key performance parameters of various micro‐nano manufacturing technologies for functionalizing optical fiber probes and focuses on the FL‐3DNp technology. In addition, the latest research progresses are systematically presented from the perspective of structure and application. Finally, the current research challenges and future development directions in this emerging field are discussed, aiming at providing scientific and industrial guidance for FL‐3DNp in functionalizing optical fibers.

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A Fiber Optic Fabry–Perot Cavity Sensor for the Probing of Oily Samples

Cited by 13 publications

References 38 publications

Optical Fiber-Tip Sensors Based on In-Situ µ-Printed Polymer Suspended-Microbeams

Optical Fiber-Tip Sensors Based on In-Situ µ-Printed Polymer Suspended-Microbeams

Single‐Step 3D Printing of Micro‐Optics with Adjustable Refractive Index by Ultrafast Laser Nanolithography

Femtosecond Laser 3D Nano‐Printing for Functionalization of Optical Fiber Tips

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