Finite-Difference Mode Solver for Curved Waveguides With Angled and Curved Dielectric Interfaces

Krause, Michael

doi:10.1109/jlt.2011.2106763

Cited by 23 publications

(15 citation statements)

References 39 publications

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“…The study is based on intensive 3D full-vector numerical computations and has permitted to identify the modes that remain predominantly confined in the transmission (inner) waveguide. Figure 2 displays the imaginary indices n i of these modes, relevant for the calculation of the radiation loss as calculated using the wgms3d software package [22] . The propagation constant of the mode is 2π/λ 0 (n r + jn i ).…”

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confidence: 99%

Ultracompact integrated polarizers using bent asymmetric coupled waveguides

Chamorro‐Posada

2019

Opt. Lett.

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A new type of integrated polarizer based on bent coupled optical waveguides is proposed. The simplicity of the device geometry permits its realization using only basic standard fabrication steps. A deep etched waveguide silicon nitride TE-pass implementation has been studied using a full vector 3D mode solver and beam propagation techniques. The characteristics of the underlying physical mechanism bring in flexibility to the design of broadband devices robust against fabrication tolerances. The possibility of incorporating almost designtransparent polarizers in photonic integrated circuits is also discussed.

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confidence: 99%

Ultracompact integrated polarizers using bent asymmetric coupled waveguides

Chamorro‐Posada

2019

Opt. Lett.

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“…It is only necessary to calculate two field components, which can be used to derive the full electric and magnetic field intensity vectors. For instance [24],…”

Section: Modelingmentioning

confidence: 99%

“…The full 3D vector modes can be obtained, for instance, using a finite difference discretization of the above equations [24,25,26]. All the 3D vector mode field calculations in this work have been performed using the wgms3d [24,27] software package. A very common approach to this problem is also based on its reduction to a 2D geometry, using the EIM [14,15].…”

Section: Modelingmentioning

confidence: 99%

Radiation in bent asymmetric coupled waveguides

Chamorro‐Posada

2019

Appl. Opt.

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A numerical study of the radiation in coupled bent waveguides is presented. Such arrangements of curved waveguides in reduced radiation-loss configurations can be used to enhance the quality factor of integrated micro-resonators. 3D full vector computations of the complex modal fields (and propagation constants) and the transient propagation effects have been performed. The results obtained agree qualitatively with former 2D FDTD analyses. At the same time, the calculations presented meet the accuracy requirements for the design of practical implementations that are unattainable with 2D approaches.

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“…The second partial derivative is a measure for the sensitivity toward refractive index changes in the cladding. Both values were determined from simulations with a free eigenmode solver, which features the calculation of eigenmodes in curved waveguide systems [16]. We found cladding refractive index sensitivities ∂β ∕ ∂n cladd of 7.58 · 10 5 ∕ m and 2.56 · 10 6 ∕ m for TE and TM, respectively.…”

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confidence: 95%

Trimming of high-Q-factor silicon ring resonators by electron beam bleaching

et al. 2012

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We demonstrate a novel position-resolved resonance trimming strategy for silicon ring resonators. Ring resonators are covered with a chromophore-doped guest host polymer cladding. Illumination of the polymer cladding with high-energy electrons causes a bleaching of the chromophore molecules. Bleaching of the chromophores induces a reduction of the polymer refractive index, which can be used to trim the resonance frequency of the ring resonators. A maximum refractive index change of 0.06 and a TM polarization resonance shift of 16.4 nm have been measured. A Q factor of 20,000 before bleaching remains unaltered after the electron beam exposure process.

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Finite-Difference Mode Solver for Curved Waveguides With Angled and Curved Dielectric Interfaces

Cited by 23 publications

References 39 publications

Ultracompact integrated polarizers using bent asymmetric coupled waveguides

Ultracompact integrated polarizers using bent asymmetric coupled waveguides

Radiation in bent asymmetric coupled waveguides

Trimming of high-Q-factor silicon ring resonators by electron beam bleaching

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