Skip to main content Accessibility help

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)...


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.



Hide All
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
7. Ferlauto, A.S., Ferreira, G.M., Pearce, J.M., Wronski, C.R., Collins, R.W., Deng, X., Ganguly, G., Thin Solid Films 455456, 388 (2004)


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)...


Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed