Title :
Linearized Frequency Doubling for Microwave Photonics Links Using Integrated Parallel Mach–Zehnder Modulator
Author :
Song Yu ; Tianwei Jiang ; Jian Li ; Ruanbin Zhang ; Guohua Wu ; Wanyi Gu
Author_Institution :
State Key Lab. of Inf. Photonics & Opt. Commun., Beijing Univ. of Posts & Telecommun., Beijing, China
Abstract :
In microwave photonics links (MPLs), the multicarrier microwave signals are subjected to intermodulation distortion (IMD) and degrades the linearity of the MPL significantly. A linearization scheme is presented with an integrated parallel Mach-Zehnder modulator (MZM), without requiring optical/electrical filters and optical delays. In addition, to reduce the requirements on the electrical and optical components for the high-frequency applications, frequency doubling is designed in this linearization scheme. Theoretical expressions are presented to analyze this scheme. Experimental and numerical results show that the main IMD2 products are suppressed by more than 35 dB.
Keywords :
integrated optoelectronics; intermodulation distortion; linearisation techniques; microwave photonics; numerical analysis; optical distortion; optical harmonic generation; optical links; optical modulation; IMD; IMD2 products; MPL; MZM; electrical components; high-frequency applications; integrated parallel Mach-Zehnder modulator; intermodulation distortion; linearization method; linearized frequency doubling; microwave photonics links; multicarrier microwave signals; numerical analysis; optical components; Amplitude modulation; Optical attenuators; Optical distortion; Optical filters; Optical harmonic generation; Optical interferometry; Optical modulation; Microwave photonics links (MPL); frequency doubling; intermodulation distortion (IMD); linearization;
Journal_Title :
Photonics Journal, IEEE
DOI :
10.1109/JPHOT.2013.2271636
