Topology optimisation of slow light coupling to photonic crystal waveguides

Yang, Lirong; Lavrinenko, Andrei V.; Frandsen, Lars Hagedorn; Borel, Peter Ingo; Têtu, Amélie; Fage-Pedersen, Jacob

doi:10.1049/el:20071509

Cited by 17 publications

(13 citation statements)

References 5 publications

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“…In [63] a waveguide intersection was optimized in order to provide for maximum transmission and minimum crosstalk. A waveguide taper structure was optimized in [64] providing a minimum of loss in the connection between a simple ridge waveguide and a photonic crystal waveguide.…”

Section: Waveguidesmentioning

confidence: 99%

Topology optimization for nano‐photonics

Jensen

Sigmund

2010

Laser & Photonics Reviews

620

478

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Topology optimization is a computational tool that can be used for the systematic design of photonic crystals, waveguides, resonators, filters and plasmonics. The method was originally developed for mechanical design problems but has within the last six years been applied to a range of photonics applications. Topology optimization may be based on finite element and finite difference type modeling methods in both frequency and time domain. The basic idea is that the material density of each element or grid point is a design variable, hence the geometry is parameterized in a pixel-like fashion. The optimization problem is efficiently solved using mathematical programming-based optimization methods and analytical gradient calculations. The paper reviews the basic procedures behind topology optimization, a large number of applications ranging from photonic crystal design to surface plasmonic devices, and lists some of the future challenges in non-linear applications.

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Section: Waveguidesmentioning

confidence: 99%

Topology optimization for nano‐photonics

Jensen

Sigmund

2010

Laser & Photonics Reviews

620

478

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“…Various research groups around the world have studied this coupling [15][16][17]; a nice review of different coupling schemes has been presented in [18]. However, most of these are theoretical studies with few experimental demonstrations [19][20][21][22]. Vlasov and McNab [22] showed that properly designed terminations can greatly increase the coupling at low group velocities.…”

Section: Introductionmentioning

confidence: 99%

High efficiency coupling of light from a ridge to a photonic crystal waveguide

Askari

Adibi

2013

Appl. Opt.

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“…Säynätjoki et al [5] have proposed a slow-light coupler for the RPhCW, but shown no experimental results. Here we apply topology optimization (TO) [6,7,8,10] to design a slow-light coupling interface, and experimentally demonstrate a coupling-efficiency improvement of up to 2.5dB.…”

Section: Introductionmentioning

confidence: 99%