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Novel device for implementation of WDM in the visible spectrum

  • P. Louro (a1) (a2), M. Vieira (a1) (a2) (a3), M. A. Vieira (a1) (a2), V. Silva (a1) (a2) and A. Fantoni (a1) (a2)...

Abstract

In this paper we report the use of a device based on two multilayered a-SiC:H/a-Si:H stacked heterostructures to photodetect and demultiplex optical signals of the visible spectrum. Both heterostructures were optimized for the detection of short and long wavelengths within the visible range. The optoelectronic characterization of the device includes spectral response measurements under reverse bias and using different optical steady state light conditions to soak the device. Results show that the device photocurrent signal measured using appropriate steady state optical bias, allows the separate detection of the input transmitted signals which enables the demultiplexing task. A numerical simulation, gives insight into the transduction mechanism to explain the device wavelength selective behavior.

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References

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1. Bas, M., Fiber Optics Handbook, Fiber, Dev. and Syst. for Opt. Comm., Chap, 13, Mc Graw-Hill, 2002.
2. Vieira, M., Fernandes, M., Louro, P., Fantoni, A., Vygranenko, Y., Lavareda, G., Nunes de Carvalho, C., Mat. Res. Soc. Symp. Proc., Vol. 862 (2005) A13.4.
3. Vieira, M., Fantoni, A., Fernandes, M., Louro, P., Lavareda, G., Carvalho, C.N., Nanosci, J.. Nanotechn., 9(7), (2009) 40224027. DOI: 10.1166/jnn.2009.M05.
4. Louro, P., Fantoni, A., Fernandes, M., Maçarico, A., Schwarz, R., Vieira, M., J. Non Cryst. Solids, 338-340 (2004) 345348. DOI: 10.1016/j.jnoncrysol.2004.02.070.
5. Vieira, M., Louro, P., Vieira, M. A., Fernandes, M., Costa, J., Fantoni, A., and Barata, M. A., Phys. Status Solidi C 7, No. 3–4, 11841187 (2010) / DOI: 10.1002/pssc.200982700.
6. Louro, P., Vieira, M. A., Vieira, M., Costa, J., Fernandes, M., Sensor Dev. Techn. Appl.. (SENSORDEVICES), 2010 First Int. Conf., vol., no., pp.146150, 18-25 July 2010
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Keywords

Novel device for implementation of WDM in the visible spectrum

  • P. Louro (a1) (a2), M. Vieira (a1) (a2) (a3), M. A. Vieira (a1) (a2), V. Silva (a1) (a2) and A. Fantoni (a1) (a2)...

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