Design rules for low loss waveguides
Emergence of THz technologies and design and optimisation low-loss waveguides and devices
... have reported a PCF-like waveguide using Teflon tubes and filaments with loss values of 0.5 cm -1 , showing their potential. A typical PCF cross section with a triangular array of holes is shown in Fig. 1. The ...
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Low-loss Waveguides for THz Guidance and Devices
... modal loss of a guided mode in a PCF is due to the combination of the material loss and the leakage ...material loss arises due to the complex refractive indices of the waveguide materials and the ...
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Characterization of low-loss waveguides and devices for terahertz radiation
... The variation of the n fsm value with the pitch length is also shown by a chained line for d Λ ¼ 0.9 at 1.0 THz. The n fsm represents a frequency-dependent equivalent index of the perforated cladding region, and this was ...
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Low-loss Waveguides and Devices for Compact THz Systems
... A typical PCF cross section with a triangular array of holes is shown in Fig. 1. The structure predominantly consists of such periodic air-holes with diameter, d, and the pitch length between the two nearest holes is . ...
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Design and Characterization Low-loss modes in Dielectric-Coated Hollow-core waveguides at THz Frequency
... elliptical waveguides with inner coating of silver and polystyrene (PS) are presented for low-loss terahertz ...possible loss for each waveguide at the frequency of ...propagation loss ...
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Design and Characterization Low-loss modes in Dielectric-Coated Hollow-core waveguides at THz Frequency
... elliptical waveguides with inner coating of silver and polystyrene (PS) are presented for low-loss terahertz ...possible loss for each waveguide at the frequency of ...propagation loss ...
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Low loss optical waveguides fabricated in LiTaO3 by swift heavy ion irradiation
... Our initial strategy to select the type of ion irradiation, with the aim of efficient waveguide fabrication, takes into account as a reference the detailed information available from waveguide fabrication and ion track ...
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Mode resolved Fabry Perot experiment in low loss Bragg reflection waveguides
... ∗ [email protected] Abstract: Based on the interaction between different spatial modes, semi- conductor Bragg-reflection waveguides (BRWs) provide a highly functional platform for non-linear optics. For ...
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Loss engineered slow light waveguides
... contrast waveguides, especially silicon photonic crystal ...complicated loss-dependence observed experimentally for structurally engineered slow light ...These waveguides have proven to be a very ...
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Low-loss sharp bends in polymer waveguides enabled by the introduction of a thin metal layer
... total loss dependence on metal type According to the discussion in the previous sections, for the quasi-TE mode the metal layer acts like a shield that pushes the mode towards the ridge and prevents it from ...
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Article Ultra-Low-Loss Silicon Waveguides for Heterogeneously Integrated Silicon/III-V Photonics
... The ring in Figure 5a has a 750 µm bend radius, for which we did not observe any bend-loss induced radiation in the resonator. To confirm this, we investigated rings with varying radii, and plot their intrinsic Q ...
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Propagation loss in slow light photonic crystal waveguides
... For waveguides that initially have a low surface roughness, the increased loss through absorption will out- weigh any improvement of the silicon/air ...for waveguides with initially high ...
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Multimode Interference 3 dB Splitters in Hollow Core Metallic Waveguides for Low-Loss THz Wave Transmission
... The complex refractive indices used for the gold (Au) metal-cladding, the silica outer cladding and polysterene inner coating where considered to be 281.55 + j419.74 [22], 1.96 + j0.0061 and 1.58 + j0.0036, respectively, ...
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Reduction of propagation loss in pillar-based photonic crystal waveguides
... Second, a single line defect in a pillar-based PhC supports one even symmetry mode which allows for effective single mode operation. Finally, active pillar PhC devices can be electrically contacted, inherently avoiding ...
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Sum Rules for Parallel Plate Waveguides: Experimental Results and Theory
... However, the coupling between split ring resonators causes a wider bandwidth and stronger scattering at higher frequencies. The lower left part of Fig. 5b illustrates a steeper slope of the Im P (jk) compared to that in ...
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Design and optimization of chalcogenide waveguides for supercontinuum generation
... 5.6 Summary In this chapter, a full-vector FE method is used for dispersion tailoring the Ge 11.5 As 24 Se 64.5 ChG nanowire through rigorous numerical simulations. The nanowire designed, by varying it transverse ...
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Low temperature SiN waveguides optimization for photonic platform
... The table 2.1 gives the thickness of the fabricated SiN films as well as their optical index. The values of the optical indexes were computed applying Cauchy dispersion laws to ellipsometry measurements. 3 Buiding ...
2980. Passive Loss Rules
... 549 1986 TRA §502. 550 But see Rev. Rul. 97-4, 1997-3 I.R.B. 6, where the IRS ruled that 1986 TRA §502(e)(3) does not prevent a taxpayer from claiming a low-income housing credit under §42(a) for a building ...
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Design and Characterization of Low-Loss Porous-Core Photonic Crystal Fiber
... as waveguides, which exploit their unique characteristics of being endlessly single moded and which offer adjustable spot-size and dispersion properties for various linear and nonlinear ...
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Analysis and design of a novel low-loss hollow substrate integrated waveguide
... Index Terms —Millimetre wave circuits, transmission lines, multichip modules. I. I NTRODUCTION I N wireless communications, the ever increasing demand for a higher data rate and network capacity has always been a ...
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