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Optical Engineering

Simultaneous differential phase-shift keying payload and subcarrier-multiplexed label generation using a single modulator and its application to dispersion monitoring
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Paper Abstract

We present a new simultaneous differential phase-shift keying (DPSK) payload and subcarrier-multiplexed (SCM) label generation technique using a single dual-electrode Mach-Zehnder modulator (DE-MZM). We conduct simulations to verify the feasibility of the new SCM labeling scheme and examine the mutual interference between the DPSK payload and the SCM label. By selecting the subcarrier at half of the payload bit-rate frequency, we can significantly suppress the SCM label induced-power penalty to the DPSK payload. Moreover, we apply the SCM label generated by the proposed labeling technique to chromatic dispersion monitoring for DPSK systems. Simulation results show that by detecting radio frequency power of both the clock tone and the SCM label, the monitoring range is greatly improved.

Paper Details

Date Published: 1 September 2007
PDF: 5 pages
Opt. Eng. 46(9) 095010 doi: 10.1117/1.2779024
Published in: Optical Engineering Volume 46, Issue 9
Show Author Affiliations
Ning Liu, Nanyang Technological Univ. (Singapore)
Wen-De Zhong, Nanyang Technological Univ. (Singapore)
Yang Jing Wen, Institute for Infocomm Research (Singapore)


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