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Optical Fiber Telecommunications VA by Alan E Willner, Tingye Li, Ivan Kaminow

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Chapter 3

Advances in Photodetectors and Optical Receivers

Andreas Beling and Joe C. Campbell,    University of Virginia, Department of Electrical and Computer Engineering, Charlottesville, VA 22904, USA

3.1 Introduction

The landscape for advances in photodetectors and optical receivers has experienced significant change since Optical Fiber Telecommunications V. The quests for higher speed p-i-n detectors and lower noise avalanche photodiodes (APDs) with high gain-bandwidth product remain. To a great extent, high-speed structures have coalesced to evanescently-coupled waveguide devices; bandwidths exceeding 140 GHz have been reported. A primary APD breakthrough has been the development of Ge on Si separate-absorption-and-multiplication devices ...

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