Title :
Photonic generation of binary differential phase-coded microwave signals
Author :
Fangzheng Zhang ; Xiaozhong Ge ; Shilong Pan
Author_Institution :
Key Lab. of Radar Imaging & Microwave Photonics, Nanjing Univ. of Aeronaut. & Astronaut., Nanjing, China
Abstract :
A scheme for photonic generation of binary differential phase-coded microwave signals is proposed and demonstrated. In the proposed system, two optical sidebands are generated and phase modulated by an electrical signal. Then, the two optical sidebands are separated by a Mach-Zehnder interferometer (MZI) and properly delayed between each other before combined at an optical coupler. By balanced photodetection after the optical coupler, a binary differential phase-coded microwave signal is generated. The carrier frequency of the generated signal is doubled compared with the signal source in the system, thus the requirement for high frequency electrical devices is relaxed. The proposed system is the first microwave photonic signal generator with differential phase coding, which can find applications in radar and communication systems.
Keywords :
Mach-Zehnder interferometers; binary codes; differential phase shift keying; microwave generation; microwave photonics; optical couplers; optical modulation; phase coding; photodetectors; MZI; Mach-Zehnder interferometer; balanced photodetection; binary differential phase coded microwave signal; electrical signal; high frequency electrical device; microwave photonic signal generator; optical coupler; optical sideband generation; phase modulation; photonic generation; Integrated optics; Microwave communication; Microwave photonics; Optical modulation; Optical polarization; Mach-Zehnder interferometer (MZI); differential phase coding; microwave photonics;
Conference_Titel :
Optical Communications and Networks (ICOCN), 2015 14th International Conference on
Conference_Location :
Nanjing
DOI :
10.1109/ICOCN.2015.7203728
