Polarization-independent 90°-turns in single-mode micro-waveguides on silicon-on-insulator wafers for telecommunication wavelengths
| Autor: | Eric Cassan, Laurent Vivien, Suzanne Laval |
|---|---|
| Rok vydání: | 2004 |
| Předmět: |
Materials science
business.industry Single-mode optical fiber Finite-difference time-domain method Silicon on insulator Optical polarization Polarization (waves) Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials law.invention Transverse mode Wavelength Optics law Electrical and Electronic Engineering Physical and Theoretical Chemistry Telecommunications business Waveguide |
| Zdroj: | Optics Communications. 235:83-88 |
| ISSN: | 0030-4018 |
| DOI: | 10.1016/j.optcom.2004.02.080 |
| Popis: | A theoretical analysis of possible ways to achieve light 90°-turns with silicon-on-insulator (SOI) polarization-independent micro-waveguides, which are key elements for telecommunication applications, is presented. Efficiency of various fully-etched corner mirrors and 90°-bends has been evaluated for both (well-designed) rib and (square) strip waveguides using three-dimensional finite difference time domain (3D FDTD) simulations. It is shown that SOI rib micro-waveguides which are polarization insensitive have better results with corner mirrors provided that the waveguide height is more that 1.5 μm (loss R is larger than a few microns (loss R>4 μ m). In both cases, loss difference between quasi-TE and quasi-TM polarization is estimated to less than 0.04 dB. |
| Databáze: | OpenAIRE |
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