Photonic crystal waveguide directional couplers as wavelength selective optical filters

Zimmermann, J.; Kamp, M.; Forchel, A.; Marz, R.

doi:10.1016/j.optcom.2003.11.026

Cited by 90 publications

(36 citation statements)

References 11 publications

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“…It is a result of the strong interaction of coupled waveguides, which now are much closer to each other than in the case of standard line defect waveguides in a PhC lattice (see, for example, the similar rod structure in [26]). In this frequency range the difference between the even and odd supermode propagation constant is close to 0.1 · 2π/a, which leads to a crude estimate of minimum coupling length [27]: L = π/|k even − k odd | = (π/0.1) · (a/2π) = 5a. Enhanced interaction leads to a shorter coupling length.…”

Section: Directional Couplermentioning

confidence: 95%

Coupled nanopillar waveguides optical properties and applications

Chigrin

Zhukovsky

Lavrinenko

et al. 2007

Physica Status Solidi (a)

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In this paper we review basic properties of coupled periodic and aperiodic nanopillar waveguides. A coupled nanopillar waveguide consists of several rows of periodically or aperiodically placed dielectric rods (pillars). In such a waveguide, light confinement is due to the total internal reflection, while guided modes dispersion is strongly affected by the waveguide structure. We present a systematic analysis of the optical properties of coupled nanopillar waveguides and discuss their possible applications for integrated optics.

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Section: Directional Couplermentioning

confidence: 95%

Coupled nanopillar waveguides optical properties and applications

Chigrin

Zhukovsky

Lavrinenko

et al. 2007

Physica Status Solidi (a)

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“…A 60° PC bend is used for an 1.31/1.55 wavelength demultiplexer to connect directional coupler ports to access waveguides [14]. Double 60° bend waveguides are placed at the exit of the directional couplers in this study.…”

Section: A Optimisation Of Double 60° Bendsmentioning

confidence: 99%

A 1x4 power-splitter based on photonic crystal Y-splitter and directional couplers

Bagci¹,

Akaoglu

2013

Opt. Pura Apl.

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ABSTRACT:A 1×4 photonic crystal power splitter operating in the optical communication window is demonstrated by plane-wave expansion and finite-difference time-domain simulations. The device consists of one Y-junction and two directional couplers. Double 60º bends are formed at the exit of directional couplers to prevent crosstalk. The Y-junction, double bends and coupling holes at the directional couplers are optimized to increase the transmission efficiency at the output ports. The simulation results exhibit almost equal power splitting with low loss characteristic. The investigated design shows potential for optical switching and routing applications in optical communications.

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“…2b.) (Zimmermann et al, 2004, Nagpal, 2004. As discussed in (Nagpal, 2004), when two PC waveguides are placed close to each other, light propagating in one of the waveguides can be coupled to the neighboring waveguide.…”

Section: Case Study 1: a Pc All-optical Switchmentioning

confidence: 99%

“…It is shown (Zimmermann et al, 2004, Nagpal, 2004] that the light that is travelling in one of these waveguides, can be periodically coupled to the other one after passing a certain distance referred to as the coupling length (L C ). The coupling length is related to the propagation constants of the odd (ko) and even (ke) modes as follows: www.intechopen.com…”

Section: Case Study 1: a Pc All-optical Switchmentioning

confidence: 99%