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Proceedings Paper

40-Gbit/s receivers for next-generation telecommunication systems
Author(s): Mark Karnakewicz; Ola Sjoelund; Ayman Kanan; T. G. Beck Mason; Rao Gudimetla; Kai Hui; Jim Wang; J. Michael Geary; Julie Ji; Osamu Mizuhara
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Paper Abstract

As the demand for increased bandwidth continues to grow, the implementation of 10 Gbit/s systems is underway and telecommunications companies are now beginning to see a need for 40 Gbit/s per channel. One of the key enablers for building such 40 Gbit/s systems is the availability of high bandwidth receivers. At 40 Gbit/s the fundamental tradeoff between the transit time limited bandwidth and the internal quantum efficiency for conventional surface illuminated PIN detectors makes them unsuitable. It is therefore necessary to employ a waveguide photodetector design. Many 40 Gbit/s systems employ return-to-zero transmission formats and polarization interleaving. This added complexity places additional demands on both the bandwidth and the polarization dependence of these detectors. The high demands placed on the detector design make an optoelectronic integrated circuit approach for the receiver very difficult to realize. In this paper, we will discuss a 40 Gbit/s receiver with a responsivity greater than 0.7 A/W and polarization dependence of less than 0.1 dB over the wavelength range from 1500 nm to 1620 nm. This receiver has a 3dB bandwidth of 40 Ghz, a conversion gain as high as 120 V/W, < 20 pA/(root) Hz input referred noise, < -7 dBm sensitivity, low deviation from linear phase, and a linear output swing greater than 0.8 V p-p.

Paper Details

Date Published: 30 July 2001
PDF: 13 pages
Proc. SPIE 4532, Active and Passive Optical Components for WDM Communication, (30 July 2001); doi: 10.1117/12.436009
Show Author Affiliations
Mark Karnakewicz, Agere Systems (United States)
Ola Sjoelund, Agere Systems (United States)
Ayman Kanan, Agere Systems (United States)
T. G. Beck Mason, Agere Systems (United States)
Rao Gudimetla, Agere Systems (United States)
Kai Hui, Agere Systems (United States)
Jim Wang, Agere Systems (United States)
J. Michael Geary, Agere Systems (United States)
Julie Ji, Agere Systems (United States)
Osamu Mizuhara, Agere Systems (United States)

Published in SPIE Proceedings Vol. 4532:
Active and Passive Optical Components for WDM Communication
Achyut Kumar Dutta; Abdul Ahad Sami Awwal; Niloy K. Dutta; Katsunari Okamoto, Editor(s)

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