نتایج جستجو برای: graded index

تعداد نتایج: 423873  

2012
Li Liu Yuan Gong Yu Wu Tian Zhao Hui-Juan Wu Yunjiang Rao

Fiber-optic interferometric sensors based on graded-index multimode fibers have very high refractive-index sensitivity, as we previously demonstrated. In this paper, spatial-frequency multiplexing of this type of fiber-optic refractive index sensors is investigated. It is estimated that multiplexing of more than 10 such sensors is possible. In the multiplexing scheme, one of the sensors is used...

Journal: :Applied optics 2003
Marcelo B Pereira Flavio Horowitz

In the standard M-line method for the characterization of graded-index film, an analytical curve is fitted to the waveguide mode measurements and extrapolated to provide the refractive index in the zero-depth limit. Here we review our polarimetric approach to a direct near-surface measurement, which complements the M-line method. Also, we present its new and more straightforward version, which ...

Journal: :Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films 1992

Journal: :Energies 2023

In this paper, narrow-bandgap polymer acceptors combining a benzotriazole (BTz)-core fused-ring segment, named the PZT series, were used with high-absorption-efficiency (PBDB) compound branched 2-butyl octyl, linear n-octyl, and methyl to be utilized as graded-index (GI) active layer of solar cells (PSCs) increase photocurrent enhance efficiency compared existing PBDB-T:PZT PBDB-T:PZT-γ. additi...

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