Photodiodes with integrated optical filters for passive optical network applications

Christophe Petit; Markus Blaser

doi:10.1117/12.692888

6 July 2006 Photodiodes with integrated optical filters for passive optical network applications

Christophe Petit, Markus Blaser

Proceedings Volume 6350, Workshop on Optical Components for Broadband Communication; 63500I (2006) https://doi.org/10.1117/12.692888
Event: Workshop on Optical Components for Broadband Communication, 2006, Stockholm, Sweden

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.

Citation Download Citation

Christophe Petit and Markus Blaser "Photodiodes with integrated optical filters for passive optical network applications", Proc. SPIE 6350, Workshop on Optical Components for Broadband Communication, 63500I (6 July 2006); https://doi.org/10.1117/12.692888

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