Title :
Comparison of optical single-sideband modulation and chirped fiber gratings as dispersion mitigating techniques in optical millimeter-wave multichannel systems
Author :
Ramos, Francisco ; Marti, Javier
Author_Institution :
ETSI Telecommun., Univ. Politecnica de Valencia, Spain
Abstract :
A comparative study between optical single-sideband (SSB) modulation and chirped fiber gratings (CFG) as dispersion equalization techniques is carried out. The simulation results show that the dispersion-induced distortion arising in optical millimeter-wave multichannel systems can not be compensated by employing the SSB modulation approach. Furthermore, we have demonstrated that the use of a CFG significantly reduces (nearly 25 dB) the composite triple beat (CTB) distortion. An accurate design of the CFG however must be addressed because the equalized CTB levels are very sensitive to the nonideal characteristics of the CFG such as a deviation of the optimum group delay slope or ripples.
Keywords :
chirp modulation; compensation; delays; diffraction gratings; equalisers; microwave links; microwave photonics; millimetre wave devices; optical fibre communication; optical fibre dispersion; optical modulation; chirped fiber gratings; comparative study; composite triple beat distortion; dispersion equalization technique; dispersion mitigating techniques; dispersion-induced distortion; equalized CTB levels; nonideal characteristics; optical millimeter-wave multichannel systems; optical single-sideband modulation; optimum group delay slope; ripples; simulation results; Amplitude modulation; Chirp modulation; Fiber gratings; Fiber nonlinear optics; High speed optical techniques; Nonlinear distortion; Optical distortion; Optical fiber dispersion; Optical modulation; Optical sensors;
Journal_Title :
Photonics Technology Letters, IEEE
