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http://dx.doi.org/10.3807/COPP.2018.2.1.053

A Novel High Speed Frequency Sweeping Signal Generator in X-band Based on Tunable Optoelectronic Oscillator  

Sun, Mingming (National Research Center for Optical Sensing/Communications Integrated Networking, Southeast University)
Chen, Han (School of Instrument Science and Engineering, Southeast University)
Sun, Xiaohan (National Research Center for Optical Sensing/Communications Integrated Networking, Southeast University)
Publication Information
Current Optics and Photonics / v.2, no.1, 2018 , pp. 53-58 More about this Journal
Abstract
A novel X-band high speed frequency sweep signal generator based on a tunable optoelectronic oscillator (OEO) incorporating a frequency-swept laser is presented and the theoretical fundamentals of the design are explained. A prototype of the generator with tuning range from 8.8552 GHz to 10.3992 GHz and a fine step about 8 MHz is achieved. The generated radiofrequency signal with a single sideband (SSB) phase noise lower than -100 dBc/Hz@10KHz is experimentally demonstrated within the whole tunable range, without any narrow RF band-pass filters in the loop. And the tuning speed of the frequency sweep signal generator can reach to over 1 GHz/s benefiting from applying a novel dispersion compensation modular instead of several tens of kilometers of optical fiber delay line in the system.
Keywords
Frequency sweep; Optoelectronic oscillator; Dispersion compensation modular;
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