Title :
Suppression of third-order harmonics in two-tone signals using cascaded Mach-Zehnder modulators
Author :
Seki, Katsuyuki ; Yamaguchi, Yoshio ; Kanno, Atsushi ; Kawanishi, Tetsuyas ; Izutsu, Masayuki ; Nakajima, Hiromasa
Author_Institution :
Grad. Sch. of Adv. Sci. & Eng., Waseda Univ., Tokyo, Japan
Abstract :
We investigate a technique to suppress undesired third-order harmonics of two-tone lightwave signals using cascaded Mach-Zehnder modulators. Third-order harmonics, which determines the signal-to-noise ratio and side-mode suppression ratio, are dominant spurious components in two-tone lightwave signals. We were able to improve the linearity of modulator and demonstrated 14 dB suppression of third-order harmonics at 10 GHz with the technique.
Keywords :
Mach-Zehnder interferometers; optical communication equipment; optical harmonic generation; optical modulation; optical noise; cascaded Mach-Zehnder modulators; frequency 10 GHz; modulator linearity; side-mode suppression ratio; signal-to-noise ratio; spurious components; third-order harmonic suppression; two-tone lightwave signals; Harmonic analysis; Optical device fabrication; Optical modulation; Photonics; Radio frequency; Signal to noise ratio;
Conference_Titel :
Microwave Photonics (MWP) and the 2014 9th Asia-Pacific Microwave Photonics Conference (APMP), 2014 International Topical Meeting on
Conference_Location :
Sapporo
DOI :
10.1109/MWP.2014.6994517
