Title :
Photonic Generation of Ultrawideband Signals With Large Carrier Frequency Tunability Based on an Optical Carrier Phase-Shifting Method
Author :
Wei Li ; Li Xian Wang ; Jian Yu Zheng ; Ming Li ; Ning Hua Zhu
Author_Institution :
State Key Lab. on Integrated Optoelectron., Beijing, China
Abstract :
We theoretically and experimentally demonstrated a novel photonic approach to generating ultrawideband (UWB) pulses with large carrier frequency tunability based on an optical carrier phase-shifting technique by cascading polarization modulators (PolMs) and a polarizer. The UWB pulses are generated by truncating a continuous wave (CW) RF signal into a pulsed signal in a photodetector (PD). The experimental results show that the baseband frequency components and the strong residual local oscillator (LO) signal are well suppressed. In addition, the generated UWB signals satisfy the Federal Communications Commission (FCC) spectral mask very well.
Keywords :
microwave photonics; optical modulation; optical polarisers; optical tuning; UWB pulses; baseband frequency components; carrier frequency tunability; optical carrier phase-shifting method; polarization modulators; polarizer; residual local oscillator; ultrawideband signal photonic generation; Optical filters; Optical mixing; Optical modulation; Optical polarization; Optical pulses; Photonics; RF signals; Ultrawideband (UWB); microwave photonics;
Journal_Title :
Photonics Journal, IEEE
DOI :
10.1109/JPHOT.2013.2284260
