Title :
20-Gb/s All-Optical Format Conversions From RZ Signals With Different Duty Cycles to NRZ Signals
Author :
Yu, Yu ; Zhang, Xinliang ; Huang, Dexiu ; Li, Lijun ; Fu, Wei
Author_Institution :
Huazhong Univ. of Sci. & Technol., Wuhan
fDate :
7/15/2007 12:00:00 AM
Abstract :
An all-fiber delay interferometer and narrowband filter based an all-optical format conversion scheme, which can convert return-to-zero (RZ) signals with variable duty cycles to nonreturn-to-zero signals, is proposed and demonstrated. The passive converter is independent of wavelength and input power. The operation principle is analyzed and simulated. Experimental results of 20-Gb/s RZ signals with three different duty cycles accord well with the simulation results. The bit-error-rate measurements show the good performance of the proposed scheme. The conversion performances of different wavelengths and parameters are also discussed.
Keywords :
error statistics; light interferometers; optical communication equipment; optical fibre networks; optical wavelength conversion; time division multiple access; wavelength division multiplexing; all-fiber delay interferometer; all-optical format conversions; bit-error-rate measurements; narrowband filter; nonreturn-to-zero signals; optical networks; optical-time-division-multiplexing; passive converter; return-to-zero signal convertion; wavelength-division-multiplexing; Fiber nonlinear optics; Optical bistability; Optical fiber devices; Optical fiber polarization; Optical filters; Optical interferometry; Optical network units; Optical signal processing; Ultrafast optics; Wavelength conversion; Delay interferometer (DI); duty cycle; format conversion; nonreturn-to-zero (NRZ); return-to-zero (RZ);
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2007.898762
