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Optical Engineering

Improving the performance of a crosspoint-switch-based optical buffer by using a differential phase-shift keying payload
Author(s): Nan Chi; Hong Liu; Minghao Li; Juan Jose Vegas Olmos; Ronelle Geldenhuys; Dexiu Huang; Siyuan Yu
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Paper Abstract

We experimentally demonstrate a novel decimal optical buffer scheme based on a multiloop configuration and a single switch element-an optical crosspoint switch (OXS) matrix. Its variable-delay range is of 1 to 999 times the basic delay unit. The buffer dynamic reconfiguration can be achieved at nanosecond switching speed. Our results show that by using a differential phase-shift keying (DPSK) payload in the buffer it can outperform an on-off keying payload with 4-dB sensitivity improvement owing to its alleviation of patterning-induced degradation, clearly validating DPSK as a promising modulation format to overcome nonlinear impairments and to extend number of hops in all-optical packet-switching network.

Paper Details

Date Published: 1 July 2007
PDF: 5 pages
Opt. Eng. 46(7) 075201 doi: 10.1117/1.2751152
Published in: Optical Engineering Volume 46, Issue 7
Show Author Affiliations
Nan Chi, Huazhong Univ. of Science and Technology (China)
Hong Liu, Huazhong Univ. of Science and Technology (China)
Minghao Li, Huazhong Univ. of Science and Technology (China)
Juan Jose Vegas Olmos, Technische Univ. Eindhoven (Netherlands)
Ronelle Geldenhuys, Technische Univ. Eindhoven (Netherlands)
Dexiu Huang, Huazhong Univ. of Science and Technology (China)
Siyuan Yu, Univ. of Bristol (United Kingdom)


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