Abstract
The burst-mode 3R receiver using monolithic ICs for 10-Gbit/s-class
optical access networks is reported. In a point-to-multipoint access system
like a passive optical network (PON), the receiver at the optical line terminal
(OLT) must be able to handle burst-mode optical packets with significantly
different powers and phases. An OLT receiver with high sensitivity with instantaneous
response to burst inputs is desired for widening the accommodation area and
for high efficiency in PON uplinks. Currently, the diffusion of high-speed
Internet connection services represented by fiber to the home services at
1.25 Gbit/s is remarkable and the standardization of the next-generation system
operating at 10 Gbit/s has started in IEEE. We first discuss the issues in
the implementation of 10-Gbit/s-class PON systems, focusing on securing the
accommodation area and the quality of the service comparable with those of
the deployed system. Against that background, we propose target specifications
for sensitivity, a dynamic range and response speed of the 10-Gbit/s-class
burst-mode receiver so as to secure the power budget and the upstream efficiency
comparable with those of the already-installed systems. Our burst-mode 3R
receiver was designed to meet the above requirements and developed using monolithic
ICs of transimpedance amplifier, limiting amplifier, and clock and data recovery
circuit fabricated by using SiGe BiCMOS technologies along with a p-i-n photodiode.
High sensitivity of -18.0 dBm, a wide dynamic range of over 16.5 dB, and quick response time
of 75 ns were confirmed for burst inputs with extremely different powers.
© 2008 IEEE
PDF Article
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