A Wideband Frequency Tunable Optoelectronic Oscillator Incorporating a Tunable Microwave Photonic Filter Based on Phase-Modulation to Intensity-Modulation Conversion Using a Phase-Shifted Fiber Bragg Grating

An optically tunable optoelectronic oscillator (OEO) with a wide frequency tunable range incorporating a tunable microwave photonic filter implemented based on phase-modulation to intensity-modulation conversion using a phase-shifted fiber Bragg grating (PS-FBG) is proposed and experimentally demons...

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Bibliographic Details
Published in:IEEE transactions on microwave theory and techniques 2012-06, Vol.60 (6), p.1735-1742
Main Authors: Li, Wangzhe, Yao, Jianping
Format: Article
Language:English
Subjects:
Applied sciences
Band pass filters
Bandwidth
Bragg gratings
Circuit properties
Conversion
Digital broadcasting
Electric, optical and optoelectronic circuits
Electronic circuits
Electronics
Exact sciences and technology
Frequency filters
Microwave circuits, microwave integrated circuits, microwave transmission lines, submillimeter wave circuits
Microwave communications
Microwave generation
Microwave oscillators
Microwave photonics
Microwaves
optoelectronic oscillator (OEO)
Optoelectronics
Oscillators
Oscillators, resonators, synthetizers
phase modulation
phase-shifted fiber Bragg grating
Tuning
Wideband
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Summary:An optically tunable optoelectronic oscillator (OEO) with a wide frequency tunable range incorporating a tunable microwave photonic filter implemented based on phase-modulation to intensity-modulation conversion using a phase-shifted fiber Bragg grating (PS-FBG) is proposed and experimentally demonstrated. The PS-FBG in conjunction with two optical phase modulators in the OEO loop form a high-Q, wideband and frequency-tunable microwave photonic bandpass filter, to achieve simultaneously single-frequency selection and frequency tuning. Since the tuning of the microwave filter is achieved by tuning the wavelength of the incident light wave, the tunability can be easily realized at a high speed. A theoretical analysis is performed, which is verified by an experiment. A microwave signal with a frequency tunable from 3 GHz to 28 GHz is generated. To the best of our knowledge, this is the widest frequency tunable range ever achieved by an OEO. The phase noise performance of the OEO is also investigated.
ISSN:0018-9480
1557-9670
DOI:10.1109/TMTT.2012.2189231