Title :
Pulse extinction ratio improvement using SPM in an SOA for OTDM systems applications
Author :
Nielsen, Mads L. ; Olsson, Bengt-Erik ; Blumenthal, Daniel J.
Author_Institution :
Res. Center COM, Tech. Univ. Denmark, Lyngby, Denmark
Abstract :
Improvement of pulse extinction ratio from 15-20 dB to approximately 40 dB of a 10-GHz pulse train is demonstrated using the self-phase modulation-induced spectral shift caused by a semiconductor optical amplifier (SOA). The improvement permits penalty-free optical time-division multiplexing to 40 Gb/s, and demultiplexing back to 10 Gb/s of an intentionally distorted signal. Without using the SOA the 40-Gb/s signal is not receivable.
Keywords :
demultiplexing; electro-optical modulation; optical pulse generation; optical transmitters; self-phase modulation; semiconductor optical amplifiers; time division multiplexing; 10 GHz; 40 Gbit/s; Er-doped fiber ring laser; Gaussian pulses; OTDM systems applications; OTDM transmitters; demultiplexed channels; differential group velocity delays; electroabsorption modulator; eye diagram; intentionally distorted signal; optical pulse spectrum; penalty-free optical time-division multiplexing; pulse extinction ratio improvement; self-phase modulation; semiconductor optical amplifier; spectral shift; Extinction ratio; Nonlinear optics; Optical distortion; Optical modulation; Optical pulses; Pulse amplifiers; Pulse modulation; Scanning probe microscopy; Semiconductor optical amplifiers; Stimulated emission;
Journal_Title :
Photonics Technology Letters, IEEE
