Results 1 to 10 of about 112,055 (258)

Surface Plasmon Resonance and Bending Loss-Based U-Shaped Plastic Optical Fiber Biosensors [PDF]

open access: yesSensors, 2018
Escherichia coli (E. coli) is a large and diverse bacteria group that inhabits the intestinal tract of many mammals. Most E. coli strains are harmless, however some of them are pathogenic, meaning they can make one sick if ingested. By being in the feces
Ariadny da S. Arcas   +3 more
doaj   +4 more sources

Analysis of the Influence of Macro-Bending Loss in Single-Mode Optical Fibers on OFDR Signal Quality [PDF]

open access: yesSensors
This study investigates the influence of optical loss induced by the macro-bending of optical fibers on the signal quality of an optical frequency-domain reflectometry (OFDR) system.
Xiaoxi Qu   +5 more
doaj   +4 more sources

BLoss-DDNet: bending loss and dual-task decoding network for overlapping cell nucleus segmentation of cervical clinical LBC images [PDF]

open access: yesFrontiers in Artificial Intelligence
IntroductionCervical cancer has become one of the most malignant tumors that threatens women's health worldwide. Liquid-based cytology (LBC) examination has become the most common screening method for detecting cervical cancer early and preventing it ...
Guihua Yang   +17 more
doaj   +2 more sources

Twisted Dual-Cycle Fiber Optic Bending Loss Characteristics for Strain Measurement [PDF]

open access: yesSensors, 2018
The intensity-based fiber optic sensor (FOS) head using twisted dual-cycle bending loss is proposed and experimentally demonstrate. The bending loss characteristics depend on the steel wire radius, number, and distance.
Sang-Jin Choi   +4 more
doaj   +2 more sources

Design and Analysis of a Large Mode Field Area and Low Bending Loss Multi-Cladding Fiber with Comb-Index Core and Gradient-Refractive Index Ring [PDF]

open access: yesSensors, 2023
The large mode field area fiber can raise the tolerance of power, and high requirements for the bending characteristics of optical fibers are needed. In this paper, a fiber composed of a comb-index core, gradient-refractive index ring, and multi-cladding
Yining Zhang, Yudong Lian
doaj   +2 more sources

Equivalent Refractive Index Modeling and Multidomain Characterization of the Temperature Response of Loss in Fiber-Optic Macro-Bends [PDF]

open access: yesSensors
In the oil and gas industry, fiber-optic telemetry is hindered by transmission degradation from high-temperature macro-bend loss. In this study, to address the lack of a unified model, we develop a numerical framework incorporating both bending-dominated
Haihui Shen   +3 more
doaj   +2 more sources

New bending loss formula explaining bends on loss curve

open access: yesElectronics Letters, 1987
A new bending loss formula for single-mode fibres is presented. Comparison with measurements and conventional theory shows good agreement. Reported bends on the loss curves for matched- and depressed-clad fibres are explained.
exaly   +2 more sources

Holey fibers for low bend loss

open access: yesNanophotonics, 2013
Bending-loss insensitive fiber (BIF) has proved an essential medium for constructing the current fiber to the home (FTTH) network. By contrast, the progress that has been made on holey fiber (HF) technologies provides us with novel possibilities ...
Nakajima Kazuhide   +6 more
doaj   +2 more sources

Thermally Induced Mode Amplification Characteristics of Large Mode Area Segmented Cladding Fiber

open access: yesIEEE Photonics Journal, 2021
A model of amplifier based on large mode area (LMA) segmented cladding fiber (SCF) is proposed. High order modes (HOMs) filtering effect and thermal-induced modal evolution characteristics are theoretically investigated by the few-mode steady state rate ...
Caijian Xie   +6 more
doaj   +1 more source

Impact of the central refractive index dip of fibers on high-power applications

open access: yesFrontiers in Physics, 2023
Central refractive index dip is a common phenomenon in the fibers fabricated by the modified chemical vapor deposition (MCVD) technology, which is the main fabrication technique for high-power laser fibers.
Yi An   +21 more
doaj   +1 more source

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