Title :
Continuously Tunable Microwave Photonic Notch Filter With a Complex Coefficient
Author :
Li, Wei ; Zhu, Ning Hua ; Wang, Li Xian
Author_Institution :
State Key Lab. on Integrated Optoelectron., Chinese Acad. of Sci., Beijing, China
fDate :
6/1/2011 12:00:00 AM
Abstract :
This paper presents a continuously tunable microwave photonic notch filter with a complex coefficient. The complex coefficient is generated using a radio-frequency (RF) phase shifter that consists of a dual-parallel Mach-Zehnder modulator (DPMZM) and a tunable optical bandpass filter (TBPF). By simply controlling the bias voltage of the DPMZM, the frequency response of the filter can be continuously tuned over a full free spectral range (FSR) without changing the shape of the frequency response.
Keywords :
Mach-Zehnder interferometers; band-pass filters; electro-optical modulation; microwave phase shifters; microwave photonics; notch filters; optical filters; optical phase shifters; optical tuning; DPMZM; FSR; bias voltage control; complex coefficient; dual-parallel Mach-Zehnder modulator; free spectral range; microwave photonic notch filter; radio-frequency phase shifter; tunable optical bandpass filter; tuning; Band pass filters; Microwave filters; Microwave photonics; Optical fiber filters; Microwave photonic filter; microwave photonics signal processing; radio-frequency (RF) phase shifter;
Journal_Title :
Photonics Journal, IEEE
DOI :
10.1109/JPHOT.2011.2149509
