Results 11 to 20 of about 57,281 (193)

PCF Based Sensor with High Sensitivity, High Birefringence and Low Confinement Losses for Liquid Analyte Sensing Applications [PDF]

open access: yesSensors, 2015
In this paper, we report a design of high sensitivity Photonic Crystal Fiber (PCF) sensor with high birefringence and low confinement losses for liquid analyte sensing applications.
Huseyin Ademgil, Shyqyri Haxha
doaj   +5 more sources

Corresponding relationship between characteristic birefringence, strain, and impurities in Zimbabwean mixed-habit diamonds revealed by mapping techniques [PDF]

open access: yesEuropean Journal of Mineralogy, 2022
Birefringence in diamond is an optical phenomenon related to strain and various defects in crystal lattices. Despite extensive investigations being done to characterize and quantify it, there is still controversy about its origin in diamond lattices ...
C. Sun   +5 more
doaj   +1 more source

Coherent Phonon‐Induced Gigahertz Optical Birefringence and Its Manipulation in SrTiO3

open access: yesAdvanced Science, 2023
Birefringence, which modulates the polarization of electromagnetic wave, has been commercially developed and widely used in modern photonics. Fostered by high‐frequency signal processing and communications, feasible birefringence technologies operating ...
Tao Sun   +16 more
doaj   +1 more source

Millisecond-Response Nematic Liquid Crystal for Augmented Reality Displays

open access: yesPhotonics, 2023
Developing fast-response liquid crystals (LCs) is an essential way to achieve low cost, high resolution, and good visual experience for augmented reality (AR) displays.
Jiaxing Tang   +4 more
doaj   +1 more source

Highly Birefringent and Low-Loss Hollow-Core Anti-Resonant Fiber Based on a Hybrid Guidance Mechanism

open access: yesPhotonics, 2023
A highly birefringent and low-loss hollow-core anti-resonant fiber (HC-ARF) based on a hybrid guidance mechanism is proposed and investigated by using a finite element method.
Xu’an Liu   +3 more
doaj   +1 more source

Numerical Modeling of a Rectangular Hollow-Core Waveguide for the Detection of Fuel Adulteration in Terahertz Region

open access: yesFibers, 2020
A petrol adulteration sensor based on a rectangular shaped hollow-core photonic crystal fiber is proposed and numerically analyzed in the terahertz regime. The performance of the proposed sensor was evaluated when it is employed to characterize different
Md. Ahasan Habib   +3 more
doaj   +1 more source

Dynamic Birefringence of High Polymers

open access: yesKobunshi Kagaku, 1963
最近, 小野木, KeedyおよびSteinらは高分子フィルムを振動させながら複屈折の変化を測定する新しい技術について報告している。本報も同様な研究技術に関するものであるが, 特に複屈折とひずみあるいは応力との位相角を, -40から200℃の温度範囲, 0.005から20c/sの周波数領域で, より容易に測定できる装置の試作について述べている。この装置はまた, 一定ひずみおよび一定ひずみ速度などの静的条件の下で複屈折, ひずみ, 応力の同時測定を行なう場合にも用いられる。加硫ゴムおよびポリエチレンフィルムについて行なった予備実験の結果, この装置が良好なリサージュ図形を与え, 目的とした位相角の測定に十分役立つこと ...
Ryo YAMADA   +2 more
openaire   +5 more sources

Measurement of Birefringence of Low-Loss, High-Reflectance Coating of M-Axis Sapphire [PDF]

open access: yes, 2001
The birefringence of a low-loss, high-reflectance coating applied to an 8-cm-diameter sapphire crystal grown in the m-axis direction has been mapped. By monitoring the transmission of a high-finesse Fabry-Perot cavity as a function of the polarization of
Camp, Jordan B.   +3 more
core   +1 more source

Sagnac Interferometric Temperature Sensor Based on Boron-Doped Polarization-Maintaining Photonic Crystal Fibers

open access: yesOptics, 2022
A sensitive temperature sensor was demonstrated using boron-doped polarization-maintaining photonic crystal fiber (PM-PCF) as a Sagnac interferometer (SI).
Lan Cheng   +3 more
doaj   +1 more source

High Load-Induced Birefringence of PMMA Investigated in VIS/NIR Spectral Range [PDF]

open access: yes, 2019
In the paper, we present the results of an investigation of polymethylmetacrylate’s birefringence induced due to applying high-load. The stress-induced birefringence of the polymethylmetacrylate samples was experimentally investigated by an apparatus ...
Káčik, Daniel   +3 more
core   +2 more sources

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