Results 21 to 30 of about 7,236 (298)

Label free super resolution imaging with photonic nanojets from tunable tapered optical fibers [PDF]

open access: yesNanophotonics
We demonstrate a label-free, far-field super-resolution imaging approach based on photonic nanojets generated by tapered dielectric fibers. By systematically analyzing the dependence of nanojet confinement and focal distance on cylinder diameter (8–16 μm)
Shor Peled Maya Hen   +3 more
doaj   +2 more sources

Analysis of Confinement in Dual Spherical-Tapered Ended Fiber Optical Trap

open access: yesApplied Sciences, 2022
In dual-fiber optical traps, two counter-propagating laser beams emitted from opposing laser fibers trap and manipulate particles. We describe the operation and performance of a dual-fiber optical trap created using spherical-tapered ended fiber ...
Haining Feng   +6 more
doaj   +1 more source

Theoretical Study of Novel Microfiber-Typed Tunable Optical Attenuator

open access: yesNantong Daxue xuebao. Ziran kexue ban, 2020
In this study, a new type of micro-nano fiber tunable optical attenuator is studied, and the model of micronano fiber probe coupler is designed with its help.
JI Yancheng; CHEN Yupei; SUN Dan; DUAN Wei
doaj   +1 more source

Numerical and Experimental Investigation on the Optical Manipulation from an Axicon Lensed Fiber

open access: yesMicromachines, 2021
Here we numerically and experimentally studied the optical trapping on a microsphere from an axicon lensed fiber (ALF). The optical force from the fiber with different tapered lengths and by incident light at different wavelengths is calculated ...
Wu Zhang   +9 more
doaj   +1 more source

Microdrilled tapers to enhance optical fiber lasers for sensing

open access: yesScientific Reports, 2021
In this work, an experimental analysis of the performance of different types of quasi-randomly distributed reflectors inscribed into a single-mode fiber as a sensing mirror is presented.
R. A. Perez-Herrera   +6 more
doaj   +1 more source

Optical Gas Sensor Fabrication Based on Porphyrin-Anchored Electrostatic Self-Assembly onto Tapered Optical Fibers [PDF]

open access: yes, 2012
Tapered optical fibers with nano-assembled coatings of thicknesses of order tens of nanometres were used for the detection of ammonia gas. The film coating was composed of alternate layers of tetrakis-(4-sulfophenyl) porphine (TSPP) and poly(allylamine ...
Lee, Seung-Woo   +5 more
core   +1 more source

Trapping and Propelling Microparticles at Long Range by Using an Entirely Stripped and Slightly Tapered No-Core Optical Fiber

open access: yesSensors, 2013
A stripped no-core optical fiber with a 125 µm diameter was transformed into a symmetric and unbroken optical fiber that tapers slightly to a 45-µm-diameter waist. The laser light can be easily launched into the no-core optical fiber.
Yen-Si Huang, Fang-Wen Sheu
doaj   +1 more source

Sub-Nanometer Acoustic Vibration Sensing Using a Tapered-Tip Optical Fiber Microcantilever

open access: yesSensors, 2023
We demonstrate a highly sensitive acoustic vibration sensor based on a tapered-tip optical fiber acting as a microcantilever. The tapered-tip fiber has a unique output profile that exhibits a circular fringe pattern, whose distribution is highly ...
Chunyu Lu   +4 more
doaj   +1 more source

Multiplexing a serial array of tapered optical fibre sensors using coherent optical frequency domain reflectometry [PDF]

open access: yes, 2012
The use of high spatial resolution optical frequency domain reflectometry (OFDR) to facilitate the multiplexing of a serial array of tapered optical fibre sensors is presented.
Tatam, Ralph P.   +3 more
core   +1 more source

Photonic crystal fiber half-taper probe based refractometer [PDF]

open access: yes, 2014
A compact singlemode - photonic crystal fiber - singlemode fiber tip (SPST) refractive index sensor is demonstrated in this paper. A CO2 laser cleaving technique is utilised to provide a clean-cut fiber tip which is then coated by a layer of gold to ...
Bo, Lin   +8 more
core   +1 more source

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