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It is experimentally demonstrated the DGD, GVD tolerance and receiver input power dynamic range can be improved by optimizing power imbalance in a 42.7 Gb/s partial-DPSK receiver. The optimized power ratio at different optical filter bandwidth is studied.
In this paper, we present the generation, the detection and the performance evaluation of a novel return-to-zero frequency shift keying (RZ-FSK) format for 40 Gb/s transmission. Non-return-to-zero (NRZ) FSK signal is generated by using two continues-wave (CW) lasers, one Mach-Zehnder modulator (MZM) and one Mach-Zehnder delay interferometer (MZDI). A RZ-FSK signal is successfully generated by cascading...
A novel configuration to use modified duobinary signals with tunable duty cycle as optical labels in optical packet switching system is proposed. The performance of 10 Gbit/s DPSK payload with 2.5 Gbit/s MD-RZ label is analysed.
A novel scheme to generate orthogonal modulation label based on differential phase-shift keying (DPSK) payload and duobinary RZ label has been proposed. The duobinary RZ label with tunable pulse-width and extinction ratio is generated by using a differential Mach-Zehnder modulator (DMZM). Our numerical simulation results have shown that both DPSK payload and duobinary RZ label have large receiver...
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.
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