Title :
High Carrier Suppression Double Sideband Modulation Using an Integrated LiNbO3Optical Modulator
Author :
Kawanishi, Tetsuya ; Sakamoto, Takahide ; Tsuchiya, Masahiro ; Izutsu, Masayuki
Author_Institution :
National Institute of Information and Telecommunications Technology, 4-2-1 Nukui-Kita, Koganei, Tokyo, 184-8795, Japan
Abstract :
We proposed high carrier suppression double sideband modulation using a Mach-Zehnder optical modulator with active trimming technique. The modulator has a pair of trimmers in the arms of the Mach-Zehnder structure. The trimmers can compensate amplitude imbalance in the Mach-Zehnder structure due to fabrication error, where the imbalance generates residual carrier in double sideband suppressed carrier (DSB-SC) modulation. We demonstrated high carrier suppression ration of 50dB in DSB-SC modulation at 10.5GHz, by using an integrated Mach Zehnder LiNbO3modulator, where each arm has an intensity trimmer consisting of a sub Mach-Zehnder interferometer.
Keywords :
Double sideband suppressed carrier; Mach-Zehnder structure; active trimmer; amplitude imbalance; high carrier suppression; optical modulation; Amplitude modulation; Arm; Intensity modulation; Optical device fabrication; Optical interferometry; Optical modulation; Double sideband suppressed carrier; Mach-Zehnder structure; active trimmer; amplitude imbalance; high carrier suppression; optical modulation;
Conference_Titel :
Microwave Photonics, 2005. MWP 2005. International Topical Meeting on
Print_ISBN :
89-950043-3-9
DOI :
10.1109/MWP.2005.203533
