Title :
Technique for suppression of pattern dependence in a semiconductor-optical-amplifier wavelength converter
Author :
Mahgerfteh, D. ; Cho, Pak ; Goldhar, Julius ; Burdge, Geoffrey L.
Author_Institution :
Dept. of Electr. Eng., Maryland Univ., College Park, MD, USA
Abstract :
Wavelength converters that employ cross-gain modulation (XGM) in semiconductor optical amplifiers (SOAs) are limited in bit rate by the amplifier´s pattern dependent response. We substantially suppress this pattern dependence by converting the phase modulation at the data transitions to amplitude modulation using a fiber grating filter. We use this technique to obtain error-free wavelength conversion of 10-Gb/s nonreturn-to-zero (NRZ) data using an SOA that showed an error floor at 10/sup -5/ bit-error rate (BER) when used alone.
Keywords :
amplitude modulation; diffraction gratings; error statistics; optical fibre filters; optical frequency conversion; optical information processing; optical modulation; optical transmitters; phase modulation; semiconductor lasers; wavelength division multiplexing; 10 Gbit/s; amplitude modulation; bit rate; bit-error rate; cross-gain modulation; data transitions; error floor; error-free wavelength conversion; fiber grating filter; nonreturn-to-zero data; pattern dependence; pattern dependent response; phase modulation; semiconductor optical amplifiers; semiconductor-optical-amplifier wavelength converter; wavelength converters; Fiber nonlinear optics; Nonlinear optics; Optical amplifiers; Optical filters; Optical interferometry; Optical modulation; Optical signal processing; Optical wavelength conversion; Semiconductor optical amplifiers; Stimulated emission;
Journal_Title :
Photonics Technology Letters, IEEE
