Hostname: page-component-8448b6f56d-mp689 Total loading time: 0 Render date: 2024-04-20T10:24:28.766Z Has data issue: false hasContentIssue false
  • English
  • Français

a-SiC:H Based Devices as Optical Demultiplexers

Published online by Cambridge University Press:  01 February 2011

Paula Louro ,
Manuela Vieira ,
João Costa ,
M. A. Vieira ,
Miguel Fernandes ,
Alessandro Fantoni  and
Manuel Barata
Paula Louro
Affiliation:
plouro@deetc.isel.ipl.pt, ISEL, DEETC, Lisbon, Portugal
Manuela Vieira
Affiliation:
mv@isel.ipl.pt, ISEL, DEETC, Lisbon, Portugal
João Costa
Affiliation:
jcosta@deetc.isel.ipl.pt, ISEL, DEETC, Lisbon, Portugal
M. A. Vieira
Affiliation:
mvieira@deetc.isel.ipl.pt, UNINOVA, DEETC, CAPARICA, Portugal
Miguel Fernandes
Affiliation:
mfernandes@deetc.isel.ipl.pt, ISEL, Rua Conselheiro Emídio Navarro, 1, Lisbon, 1959-007, Portugal
Alessandro Fantoni
Affiliation:
afantoni@deetc.isel.ipl.pt, ISEL, Rua Conselheiro Emídio Navarro, 1, Lisbon, 1959-007, Portugal
Manuel Barata
Affiliation:
mmb@isel.ipl.pt, ISEL, Rua Conselheiro Emídio Navarro, 1, Lisbon, 1959-007, Portugal
Get access

Abstract

In this paper we present results on the use of a multilayered a-SiC:H heterostructure as a wavelength-division demultiplexing device (WDM) for the visible light spectrum. The WDM device is a glass/ITO/a-SiC:H (p-i-n)/ a-SiC:H(-p) /Si:H(-i)/SiC:H (-n)/ITO heterostructure in which the generated photocurrent at different values of the applied bias can be assigned to the different optical signals.

The device was characterized through spectral response measurements, under different electrical bias. Demonstration of the device functionality for WDM applications was done with three different input channels covering wavelengths within the visible range. The recovery of the input channels is explained using the photocurrent spectral dependence on the applied voltage. The influence of the optical power density was also analysed.

An electrical model, supported by a numerical simulation explains the device operation. Short range optical communications constitute the major application field, however other applications are also foreseen.

Keywords

optoelectronicsemiconductingdevices
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1246: Symposium B – Silicon Carbide 2010-Materials, Processing and Devices , 2010 , 1246-B07-07
Copyright
Copyright © Materials Research Society 2010

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1 Bas, Michael, Fiber Optics Handbook, Fiber, Devices and Systems for Optical Communication, Chap, 13, Mc Graw-Hill, Inc. 2002.Google Scholar
2 Louro, P., Vieira, M., Vieira, M. A., Fernandes, M., Fantoni, A., Lavareda, G., Carvalho, C.N., Amorphous and Polycrystalline Thin-Film Silicon Science and Technology – 2009, MRS Proceedings Volume 1153.Google Scholar
3 Louro, P., Vieira, M., Vieira, M. A., Fernandes, M., Fantoni, A., Francisco, C., Barata, M., Physica E 41 (2009) 1082–1085.Google Scholar
4 Topic, M., Stiebig, H., Krause, M. and Wagner, H., Appl. Phys. Lett. 78 (2001), p. 2387 Google Scholar
5 Vieira, M., Fantoni, A., Fernandes, M., Louro, P., Lavareda, G. and Carvalho, C.N., Thin Solid Films, 515, Issue 19, 2007, 7566–7570.Google Scholar
6 Vieira, M. A., Vieira, M., Fernandes, M., Fantoni, A., Louro, P., Barata, M., Amorphous and Polycrystalline Thin-Film Silicon Science and Technology – 2009, MRS Proceedings Volume 1153, A08–03 Google Scholar