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Proceedings Paper

Photodiodes with integrated optical filters for passive optical network applications
Author(s): Christophe Petit; Markus Blaser
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Paper Abstract

We demonstrate the integration of short-pass and long-pass optical thin film filters targeting Passive Optical Network (PON) applications in a versatile high-speed InGaAs p-i-n photodiode device concept. The optical filters are deposited by RF sputtering into a protective recess on the photodiode bottom-side. This configuration allows to separate the two main functions of optical filtering and opto-electrical conversion. We obtained photodiodes with high optical isolation of 25 dB in the stop-band as well as high responsivity of 0.82 and 0.93 A/W in the pass-band for a short-pass and a longpass filter. We investigated the temperature induced wavelength shift of the filter transmission spectrum between 20 °C and 120 °C and found a conventional linear relationship with a low temperature dependence of only 20 and 83 pm/°C for the short-pass and the long-pass filter. Simulations of the long-pass filter transmission characteristics regarding light incidence angle show a wavelength shift of less than 7nm for angles below 10°. Above 10° a higher shift and polarization dependence appear. Through different thermal cyclings we also demonstrated the environmental stability of the integrated filters.

Paper Details

Date Published: 6 July 2006
PDF: 5 pages
Proc. SPIE 6350, Workshop on Optical Components for Broadband Communication, 63500I (6 July 2006); doi: 10.1117/12.692888
Show Author Affiliations
Christophe Petit, Albis Optoelectronics AG (Switzerland)
Markus Blaser, Albis Optoelectronics AG (Switzerland)

Published in SPIE Proceedings Vol. 6350:
Workshop on Optical Components for Broadband Communication
Pierre-Yves Fonjallaz; Thomas P. Pearsall, Editor(s)

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