scholarly journals Femtosecond laser fabricated polymer microring resonator for sensing applications

2018 ◽  
Vol 54 (14) ◽  
pp. 888-890 ◽  
Author(s):  
D. Zhang ◽  
L. Men ◽  
Q. Chen
Keyword(s):  
Femtosecond Laser ◽  
Microring Resonator ◽  
Sensing Applications

scholarly journals Review of Femtosecond-Laser-Inscribed Fiber Bragg Gratings: Fabrication Technologies and Sensing Applications

2021 ◽  
Author(s):  
Jun He ◽  
Baijie Xu ◽  
Xizhen Xu ◽  
Changrui Liao ◽  
Yiping Wang
Keyword(s):  
Femtosecond Laser ◽  
Optical Fiber ◽  
Oil And Gas ◽  
Optical Fiber Sensor ◽  
Phase Mask ◽  
Fiber Types ◽  
Direct Writing ◽  
Excellent Thermal Stability ◽  
Sensing Applications ◽  
Compact Size

AbstractFiber Bragg grating (FBG) is the most widely used optical fiber sensor due to its compact size, high sensitivity, and easiness for multiplexing. Conventional FBGs fabricated by using an ultraviolet (UV) laser phase-mask method require the sensitization of the optical fiber and could not be used at high temperatures. Recently, the fabrication of FBGs by using a femtosecond laser has attracted extensive interests due to its excellent flexibility in creating FBGs array or special FBGs with complex spectra. The femtosecond laser could also be used for inscribing various FBGs on almost all fiber types, even fibers without any photosensitivity. Such femtosecond-laser-induced FBGs exhibit excellent thermal stability, which is suitable for sensing in harsh environment. In this review, we present the historical developments and recent advances in the fabrication technologies and sensing applications of femtosecond-laser-inscribed FBGs. Firstly, the mechanism of femtosecond-laser-induced material modification is introduced. And then, three different fabrication technologies, i.e., femtosecond laser phase mask technology, femtosecond laser holographic interferometry, and femtosecond laser direct writing technology, are discussed. Finally, the advances in high-temperature sensing applications and vector bending sensing applications of various femtosecond-laser-inscribed FBGs are summarized. Such femtosecond-laser-inscribed FBGs are promising in many industrial areas, such as aerospace vehicles, nuclear plants, oil and gas explorations, and advanced robotics in harsh environments.

scholarly journals Polymer-Based Microring Resonator with the Multimode Interference Coupler Operating at Very-Near-Infrared Wavelengths

2019 ◽  
Vol 9 (13) ◽  
pp. 2715 ◽  
Author(s):  
Huanlin Lv ◽  
Yuxin Liang ◽  
Zhenlin Wu ◽  
Xiuyou Han ◽  
Geert Morthier ◽  
...  
Keyword(s):  
Near Infrared ◽  
High Potential ◽  
Microring Resonator ◽  
Multimode Interference ◽  
Q Factor ◽  
Fluorinated Polymer ◽  
Sensing Applications ◽  
Soft Mold ◽  
Multimode Interference Coupler ◽  
Infrared Wavelengths

A microring resonator with the multimode interference coupler is fabricated on the polymer platform by using UV-based soft nanoimprint technique. A unique class of fluorinated polymer, perfluoropolyether (PFPE), is employed for the fabrication of the flexible soft mold. By optimizing the proportion between Ormocore and the thinner maT, the microring resonator is fabricated almost without residual layer. The fabricated device with a Q-factor up to 2.3 × 104 is demonstrated for very-near-infrared wavelengths, which shows high potential for sensing applications.

Femtosecond laser-ablated Fresnel zone plate fiber probe and sensing applications

2018 ◽  
Vol 57 (02) ◽  
pp. 1
Author(s):  
Xiaoling Tan ◽  
Youfu Geng ◽  
Yan Chen ◽  
Shiguo Li ◽  
Xinzhong Wang
Keyword(s):  
Femtosecond Laser ◽  
Fresnel Zone ◽  
Zone Plate ◽  
Fresnel Zone Plate ◽  
Fiber Probe ◽  
Sensing Applications

Femtosecond laser direct written off-axis fiber Bragg gratings for sensing applications

2020 ◽  
Vol 128 ◽  
pp. 106227
Author(s):  
Duarte Viveiros ◽  
Vítor A. Amorim ◽  
João M. Maia ◽  
Susana Silva ◽  
Orlando Frazão ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Fiber Bragg Gratings ◽  
Bragg Gratings ◽  
Sensing Applications

Entangled photon generation in a nonlinear microring resonator for birefringence-based sensing applications

Optik ◽  
2010 ◽  
Vol 121 (4) ◽  
pp. 389-393 ◽  
Author(s):  
P.P. Yupapin ◽  
P. Yabosdee ◽  
P. Phiphithirankarn
Keyword(s):  
Microring Resonator ◽  
Sensing Applications ◽  
Photon Generation

scholarly journals Direct Femtosecond Laser Fabrication of Chemically Functionalized Ultra-Black Textures on Silicon for Sensing Applications

Nanomaterials ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 401
Author(s):  
Yulia Borodaenko ◽  
Stanislav Gurbatov ◽  
Mikhail Tutov ◽  
Alexey Zhizhchenko ◽  
Sergei A. Kulinich ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Femtosecond Laser Ablation ◽  
Single Step ◽  
Ph Sensing ◽  
Surface Textures ◽  
High Performing ◽  
Self Organized ◽  
Sensing Applications ◽  
Signal Amplifier ◽  
Potential Applicability

Here, we present the single-step laser-assisted fabrication of anti-reflective hierarchical surface textures on silicon locally functionalized with a photoluminescent (PL) molecular nanolayer. Using femtosecond-laser ablation of commercial crystalline Si wafers placed under a layer of a solution containing rhodamine 6G (R6G) a triethoxysilyl derivative, we fabricated ordered arrays of microconical protrusions with self-organized nanoscale surface morphology. At the same time, the laser-induced temperature increase facilitated surface activation and local binding of the R6G derivative to the as-fabricated nanotextured surface. The produced dual-scale surface textures showed remarkable broadband (visible to near-IR) light-absorbing properties with an averaged reflectivity of around 1%, and the capping molecular nanolayer demonstrated a strongly enhanced PL yield. By performing a pH sensing test using the produced nanotextured substrate, we confirmed the retention of sensory properties of the molecules attached to the surface and validated the potential applicability of the high-performing liquid-assisted laser processing as a key technology for the development of innovative multifunctional sensing devices in which the textured substrate (e.g., ultra-black semiconductor) plays a dual role as a support and PL signal amplifier.

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