Patent ID: 7974542
Filing Date: 2011-07-05
Classification: H04B,H04J

Abstract:
1. An optical time division multiplexing differential phase shift keying (OTDM-DPSK) signal generator system, comprising: an OTDM-DPSK signal generator, including an optical carrier phase difference detector receiving the monitor signal, and generating and outputting an optical carrier phase difference detection signal as a function of an optical carrier phase difference between optical pulses in the monitor signal, wherein said OTDM-DPSK signal generator comprises a bit delay device, said bit delay device providing the second channel DPSK signal with a time delay necessary to bit interleave each of the first and second channel DPSK signals to provide them with the optical time division multiplexing, the time delay corresponding to half of the time on a time axis occupied by one of the optical pulses in the second channel DPSK signal.