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Proceedings Paper

Integrated incandescent microlamp coupled to SiOxNy waveguide
Author(s): D. O. Carvalho; M. N. P. Carreño; G. P. Rehder; M. I. Alayo
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Paper Abstract

(This paper was presented in Session 4, Waveguide Devices, during the MEMS and Miniaturized Systems VIII conference.) This work shows improvements on previous results related to the integration of optical waveguides and simple light sources. These previous results showed the possibility of coupling the light emitted from an incandescent chromium filament embedded in a self-supported region of silicon oxynitride (SiOxNy) film with a SiOxNy waveguide. This specific work aims to increase optical power coupled to the waveguide through the investigation of the geometry of the microlamp. Here, the length of the incandescent light is analyzed. The waveguide are fabricated on a (100) silicon substrate using silicon oxynitride deposited by PECVD as the core and cladding layers. Bulk micromachining of the silicon substrate in KOH solution is used to free from the substrate the embedded filament, reducing the thermal dissipation of that region, allowing the filament to heat up to incandescent temperatures. A microannealing process of a PECVD-obtained amorphous hydrogenated silicon carbide (a-SiC:H) deposited over the microlamp allows the correct coupling of the light.

Paper Details

Date Published: 18 February 2009
PDF: 10 pages
Proc. SPIE 7208, MOEMS and Miniaturized Systems VIII, 72080U (18 February 2009); doi: 10.1117/12.809628
Show Author Affiliations
D. O. Carvalho, Univ. of São Paulo (Brazil)
M. N. P. Carreño, Univ. of São Paulo (Brazil)
G. P. Rehder, Univ. of São Paulo (Brazil)
M. I. Alayo, Univ. of São Paulo (Brazil)

Published in SPIE Proceedings Vol. 7208:
MOEMS and Miniaturized Systems VIII
David L. Dickensheets; Harald Schenk; Wibool Piyawattanametha, Editor(s)

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