Title :
Generation of modified duobinary RZ signals by using one single dual-arm LiNbO3 modulator
Author_Institution :
Electr. & Comput. Eng. Dept., Georgia Inst. of Technol., Atlanta, GA, USA
Abstract :
We will demonstrate a simple method to generate modified duobinary return-to-zero (MD-RZ) signals by using only one single dual-arm Mach-Zehnder LiNbO/sub 3/ modulator (LN-MOD). Different duty cycle signals can be generated only by changing the time delay between two-arm electrical signals added on the LN-MOD. MD-RZ signals show high receiver sensitivity relative to duobinary nonreturn-to-zero signals.
Keywords :
Mach-Zehnder interferometers; electro-optical modulation; encoding; lithium compounds; optical communication equipment; signal generators; LiNbO/sub 3/; dual-arm Mach-Zehnder LiNbO/sub 3/ modulator; duty cycle signals; eye diagrams; high receiver sensitivity; modified duobinary RZ signal generation; modified duobinary return-to-zero signals; one single dual-arm LiNbO/sub 3/ modulator; optical communication systems; time delay; Delay effects; Nonlinear optics; Optical amplifiers; Optical mixing; Optical modulation; Optical receivers; Optical sensors; Optical signal processing; Signal generators; Voltage;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2003.818242
