Photonic crystal waveguide directional couplers as wavelength selective optical filters
| Autor: | Martin Kamp, Alfred Forchel, Reinhard März, J. Zimmermann |
|---|---|
| Rok vydání: | 2004 |
| Předmět: |
Materials science
business.industry Physics::Optics Waveguide (optics) Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Micrometre Wavelength Optics Zero-dispersion wavelength Power dividers and directional couplers Plane wave expansion Electrical and Electronic Engineering Physical and Theoretical Chemistry Optical filter business Photonic crystal |
| Zdroj: | Optics Communications. 230:387-392 |
| ISSN: | 0030-4018 |
| Popis: | Waveguide directional couplers, formed by two closely spaced linear defect waveguides in a two-dimensional photonic crystal of air holes in a semiconductor matrix, are numerically studied using plane wave expansion and finite difference time domain methods. The coupling lengths are on a wavelength scale and show a strong wavelength dependence, allowing for the design of compact wavelength selective optical filters. Applications as a channel interleaver for the 1.55 μm wavelength range and as a micrometer sized 1.31/1.55 μm wavelength demultiplexer are presented. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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