DocumentCode :
3605206
Title :
Widely Tunable Single-Passband Microwave Photonic Filter Based on DFB-SOA-Assisted Optical Carrier Recovery
Author :
Ye Deng ; Ming Li ; Jian Tang ; Shuqian Sun ; Ningbo Huang ; Ninghua Zhu
Author_Institution :
Inst. of Semicond., Beijing, China
Volume :
7
Issue :
5
fYear :
2015
Firstpage :
1
Lastpage :
8
Abstract :
A widely tunable single-passband microwave photonic filter (MPF) based on a distributed-feedback semiconductor optical amplifier (DFB-SOA) is proposed and experimentally demonstrated in this paper. The fundamental principle is to recover the suppressed optical carrier from a passband optical filter by the wavelength-selective amplification via a DFB-SOA. A microwave signal is then generated by beating the recovered optical carrier with the phase-modulated lower sideband, and thus, an MPF is achieved with the shape of the passband optical filter that is mapped from the optical domain to the electrical domain. By tuning the central wavelength of the passband optical filter, a single-passband MPF with a frequency tuning range from 5 to 35 GHz is obtained. The 3-dB bandwidth and the out-of-band suppression ratio are measured to be 4 GHz and 20 dB, respectively. In addition, the tunability of the MPF that is dependent on the driven current of the DFB-SOA is also experimentally investigated.
Keywords :
band-pass filters; distributed feedback lasers; microwave filters; microwave photonics; optical filters; optical modulation; semiconductor optical amplifiers; DFB-SOA; distributed feedback semiconductor optical amplifier; electrical domain; frequency 5 GHz to 35 GHz; microwave signal; optical carrier recovery; optical domain; out-of-band suppression ratio; passband optical filter; phase modulated lower sideband; recovered optical carrier; suppressed optical carrier; wavelength selective amplification; widely tunable single-passband microwave photonic filter; Optical amplifiers; Optical fibers; Optical filters; Optical modulation; Passband; Stimulated emission; Frequency filtering; Laser amplifiers; Radio frequency photonics; frequency filtering; laser amplifiers;
fLanguage :
English
Journal_Title :
Photonics Journal, IEEE
Publisher :
ieee
ISSN :
1943-0655
Type :
jour
DOI :
10.1109/JPHOT.2015.2475612
Filename :
7234845
Link To Document :
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