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Light propagation in optical waveguides

Propagation loss in slow light photonic crystal waveguides

Propagation loss in slow light photonic crystal waveguides

... PhC waveguides and wire waveguides were ...crystal waveguides showed significant hole shape distortion, see ...making optical measurement ...shifted waveguides was present for all ...

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Understanding the rich physics of light propagation in slow photonic crystal waveguides

Understanding the rich physics of light propagation in slow photonic crystal waveguides

... Slow light 1. INTRODUCTION Slow light photonic crystal waveguides have a number of promising applications, such as optical delay lines or increased light matter interaction ...

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Wave-guided optical waveguides

Wave-guided optical waveguides

... integrated optical waveguides into the structures and therefore have freestanding waveguides, which can be positioned anywhere in the sample at any orientation using optical ...confined ...

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Radiation losses in dielectric optical waveguides

Radiation losses in dielectric optical waveguides

... dielectric waveguides and electromagnetic wave propagation in ...the optical fibre is potentially very high. Their small size and light weight, together with the economy of using one of ...

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Characterisation of acoustic waves in optical waveguides

Characterisation of acoustic waves in optical waveguides

... The propagation of the generated acoustic wave is associated with the periodic distortion of the waveguide along the axial and transverse ...the light – however since the acoustic wave is also travelling, ...

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Optical nonlinearity in titanium dioxide waveguides

Optical nonlinearity in titanium dioxide waveguides

... in waveguides. The transparency of titanium dioxide for visible light opens possibilities to use these nonlinear effects in the visible range of the ...2 waveguides with a sidewall angle between 76 ◦ ...

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Loss engineered slow light waveguides

Loss engineered slow light waveguides

... PhC waveguides and address some misconceptions surrounding loss and slow light that have arisen in recent ...realised waveguides with significantly lower losses than comparable photonic crystal ...

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Generation and propagation of ultrashort laser pulses using nonlinear waveguides

Generation and propagation of ultrashort laser pulses using nonlinear waveguides

... good optical coupling, while at the output facet it is perpendicular to the facet ...of waveguides used in the following experiment a series facet-ridge angles were ...transmitted light as in the ...

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Reduction of propagation loss in pillar-based photonic crystal waveguides

Reduction of propagation loss in pillar-based photonic crystal waveguides

... estimated propagation losses it becomes clear that a reduction in index contrast between pillars and surrounding medium reduces the ...the light is recaptured by the next pillar. However, the fact that ...

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Propagation effects in optical waveguides, fibres and devices

Propagation effects in optical waveguides, fibres and devices

... channel waveguides and demonstrates that the new strategy can lead to significant bend loss reduction when compared to other strategies, and, conversely, can be used to enhance bend loss for a fixed bend radius ...

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Launching and propagation of light in optical fibres

Launching and propagation of light in optical fibres

... We begin by examining pulse propagation in the absence of any attenuation mechanism. As a specific example, we analyse an experiment [1] in which a laser beam was focused onto the fibre in order to measure its ...

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Printed Soft Optical Waveguides for Delivering Light into Deep Tissue

Printed Soft Optical Waveguides for Delivering Light into Deep Tissue

... between light and tissue, mainly reflection, refraction, absorption and scattering, lead to photothermal, photomechanical, photochemical and photobiological effects, which have been widely exploited for ...

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Propagation in Lossy Rectangular Waveguides

Propagation in Lossy Rectangular Waveguides

... predicted by the two methods at higher frequencies is in very close agreement. It is, therefore, sufficed to say that, although the power-loss method fails to predict the attenuation near f c accurately, it is still ...

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Optical Waveguides and Fibers

Optical Waveguides and Fibers

... third-generation optical communication systems operated around λ 0 ≈ 1300 nm, where the dispersion was extremely small but the loss was about 1 dB/km, and therefore the repeater spacing was limited by the loss in ...

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Control of pulsed light propagation through multimode optical fibers

Control of pulsed light propagation through multimode optical fibers

... the optical fiber shown in Figure 4:13, but of 10 cm length instead of 20 cm, two-photon fluorescent images of biological tissue were ac- ...focus light through multimode fibers is directly linked to the ...

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Analysis and optimization of propagation losses in LiNbO3 optical waveguides produced by swift heavy-ion irradiation

Analysis and optimization of propagation losses in LiNbO3 optical waveguides produced by swift heavy-ion irradiation

... Then, for our estimates, we substract from the initial barrier thickness h (see Table 1) the amount 2Ad, assuming that both barrier boundaries recrystallize at the same speed. In fa[r] ...

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The effect of annealing on the properties of optical waveguides

The effect of annealing on the properties of optical waveguides

... 8 The change in the quality o f the waveguide after annealing is best seen by the eye, so photographs were taken as a means o f comparison. Figure 2 contains these prints. The top photograph is of an unannealed, control ...

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Quantum Squeezed Light Propagation in an Optical Parity-Time (PT)-Symmetric Structure

Quantum Squeezed Light Propagation in an Optical Parity-Time (PT)-Symmetric Structure

... of light, having detrimental effects on the nonclassical features of the quantum ...of propagation across these optical structures on the nonclassical properties of an incident quantum ...

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