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Optica Publishing Group
  • Conference on Lasers and Electro-Optics/Pacific Rim 2007
  • (Optica Publishing Group, 2007),
  • paper ThD3_6

A Novel Orthogonally Modulation Scheme for Superimposing DPSK Signals on Dark RZ Signals

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Abstract

A simple and novel configuration of transmitter for superimposing DPSK signals on dark RZ signals with tunable duty cycle was proposed. The transmitter comprises two optical phase modulators and a delayed line Mach-Zehnder interferometer. The results show that the spectral efficiency is doubled by using this scheme.

© 2007 IEEE

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