Encoding ASK labeled CSRZ-DPSK payload by using only one dual-drive Mach-Zehnder modulator with enhanced label performance

Wei Ren Peng*, Yu Chang Lu, Jyehong Chen, Sien Chi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

This theoretical study presents a novel modulation scheme which simultaneously encodes the amplitude shift keying label on the carrier-suppressed return-to-zero differential phase shift keying payload using only one dual-drive Mach-Zehnder modulator. Compared with the previous scheme, in which three optical modulators are required, we offer a simple, compact, and cost-effective method. We theoretically evaluate and simulate the performance differences between the two schemes. It is found that the sensitivity of the label is 2 dB better than the previous scheme and the payload, with optimized extinction ratio in the electroabsorption eraser, has almost the same performance after 120-km standard single-mode fiber transmission.

Original languageEnglish
Pages (from-to)2227-2229
Number of pages3
JournalIEEE Photonics Technology Letters
Volume17
Issue number10
DOIs
StatePublished - 1 Oct 2005

Keywords

  • Amplitude shift keying (ASK)
  • Carrier-suppressed return-to-zero differential phase shift keying (CSRZ-DPSK)
  • Optical packet switching

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