Results 21 to 30 of about 113,140 (299)

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

An Ultra-Low Bending Loss Negative Curvature Hollow Core Fiber With a Polygon Jacketing Layer

open access: yesIEEE Photonics Journal, 2023
We design and simulate a new type of hollow-core antiresonant fiber with the polygon jacketing layer. Through numerical calculations, the confinement loss is approximately 0.003 dB/km at 1.45 μm and the bandwidth is ∼ 410 nm @
Yun-Hao Xu   +6 more
doaj   +2 more sources

Bend-Net: Bending Loss Regularized Multitask Learning Network for Nuclei Segmentation in Histopathology Images

open access: yesInformation
Separating overlapped nuclei is a significant challenge in histopathology image analysis. Recently published approaches have achieved promising overall performance on nuclei segmentation; however, their performance on separating overlapped nuclei is ...
Haotian Wang   +3 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

Shape sensing of optical fiber Bragg gratings based on deep learning

open access: yesMachine Learning: Science and Technology, 2023
Continuum robots in robot-assisted minimally invasive surgeries provide adequate access to target anatomies that are not directly reachable through small incisions.
Samaneh Manavi Roodsari   +6 more
doaj   +1 more source

A Large Mode Area Parabolic-Profile Core Fiber with Modified Segmented in Cladding

open access: yesPhotonics, 2022
In this paper, a novel fiber with a parabolic-profile core and eight segmented trenches in cladding is designed. The designed fiber consists of the segmented trench of low refractive index in cladding and parabolic-profile of high refractive index in the
Song Yang   +4 more
doaj   +1 more source

Low-Cost Angle Sensor for Robotics Applications Using Plastic Optical Fiber Based on Optical Loss Mechanism

open access: yesBiomimetics, 2023
Robotic systems and the human body consist of numerous joint structures, all of which require precise angle adjustments. At present, encoder, strain gauge, and electrical resistance-based sensors are commonly used for angle measurement.
Hyun-Woo Lee, Dae-Hyun Kim, Sangwoo Shin
doaj   +1 more source

Highly Birefringent, Low Flattened Dispersion Photonic Crystal Fiber in the Terahertz Region

open access: yesIEEE Photonics Journal, 2021
High-performance photonic crystal fiber (PCF) has an important impact on the development of the full potential of complex terahertz systems. A new kind of PCF with D-shaped air holes in core region was proposed for terahertz (THz) region.
Biao Wang   +5 more
doaj   +1 more source

Wide-band Bending Insensitive Multimode Fiber

open access: yesGuangtongxin yanjiu, 2021
In order to further improve the multimode fiber transmission performance in the Ethernet, the paper proposes to improve the performance of wide-band bending insensitive multimode fiber considering the material composition and profile structure design. By
Yi-chun SHEN   +3 more
doaj   +1 more source

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