L. Frandsen, P. Borel, M. Thorhauge, J. Cheng, M. Kampanis, Martin Kristensen, A. Lavrinenko, Y. Zhuang, H. Chong
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Propagation of TE and TM polarised light through smoothed sixty degree bends in planar photonic crystal waveguides
In this paper, bends in planar PCWs are investigated by introducing two smoothed 60/spl deg/ bends each having one hole. The PCWs are defined by leaving out single rows of holes. In and out coupling of light to the PCWs is obtained utilising tapered ridge waveguides. Transmission spectra are recorded for both the TE and TM polarisation with an optical spectrum analyser by using two LED sources centred at 1330 nm and 1550 nm. The 3D FDTD simulations successfully explain the observed bend losses both for the TE and TM polarisations.
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