Pure silicon - high performance: advanced optical receivers in standard silicon BiCMOS technologies

K. Schneider-Hornstein; R. Swoboda; B. Goll; H. Zimmermann

doi:10.1117/12.876250

17 January 2011 Pure silicon - high performance: advanced optical receivers in standard silicon BiCMOS technologies

K. Schneider-Hornstein, R. Swoboda, B. Goll, H. Zimmermann

Proceedings Volume 7944, Optoelectronic Interconnects and Component Integration XI; 79440W (2011) https://doi.org/10.1117/12.876250
Event: SPIE OPTO, 2011, San Francisco, California, United States

Abstract

We present the state of the art of integrated silicon photodetectors and circuits by concentrating on the progress in the last decade. Especially three highlights will be presented in more detail. In this paper a vertical pin-photodiode in a 0.6μm BiCMOS technology, consisting of an n-buried cathode, an n^- epi layer, and a p⁺ anode will be discussed. The measured responsivities for different wavelengths are 0.33A/W @ 850nm and 0.46A/W @ 660nm, respectively. Really outstanding is the reached speed of the photodiodes. The -3dB cut-off frequencies of these 50x50μm² diodes are up to 2.1GHz @850nm light and up to 3GHz @660nm light, depending on the reverse bias voltage. This high performance photodiode allows the competition of pure silicon optoelectronic integrated circuits (OEICs) even with GaAs OEICs. A silicon OEIC reaches at 2.5Gb/s¹ a higher sensitivity than a GaAs OEIC². It also consumes less power and a remarkably smaller chip area. Massive parallel integration of optical receivers enables an extremely high total data rate. A new OEIC consisting of 45 parallel channels with a data rate of 3Gb/s @850nm each allows an overall data rate of 135Gb/s.

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K. Schneider-Hornstein, R. Swoboda, B. Goll, and H. Zimmermann "Pure silicon - high performance: advanced optical receivers in standard silicon BiCMOS technologies", Proc. SPIE 7944, Optoelectronic Interconnects and Component Integration XI, 79440W (17 January 2011); https://doi.org/10.1117/12.876250

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KEYWORDS

Receivers

Photonic integrated circuits

Silicon

Photodiodes

Integrated optics

Eye

Optoelectronics

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