Journal
OPTICS LETTERS
Volume 35, Issue 14, Pages 2454-2456Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.35.002454
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Funding
- Wuhu Government
- China Telecom Corporation, Limited, Wuhu Branch
- National Fundamental Research Program of China [2006CB921900]
- National Natural Science Foundation of China (NSFC) [60921091]
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We propose a wavelength-saving topology of a quantum key distribution (QKD) network based on passive optical elements, and we report on the field test of this network on commercial telecom optical fiber at the frequency of 20 MHz. In this network, five nodes are supported with two wavelengths, and every two nodes can share secure keys directly at the same time. We also characterized the insertion loss and cross talk effects on the point-to-point QKD system after introducing this QKD network. (C) 2010 Optical Society of America
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