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A photonic linear frequency-modulated (LFM) microwave waveform generator is proposed and demonstrated using a tunable optoelectronic oscillator (OEO) based on an optically injected semiconductor laser. Frequency tunability of the OEO is achieved by controlling optical injection strength. When the sweep period of output frequency matches with the cavity round-trip time, signal quality of generated...
A simple method for generating linearly chirped microwave waveforms (LCMWs) with ultra-large time-bandwidth product (TBWP) is proposed using an optically injected semiconductor laser. The generation of an LCMW with a TBWP as large as 1.2 × 105 (10 μs, 12 GHz) is demonstrated.
A frequency tunable short optical pulse generation scheme based on a self-starting optoelectronic oscillator (OEO) with an optically injected semiconductor laser is proposed and investigated. The generation of optical pulses with a repetition rate coarsely tuned from 6.5 to 15 GHz are demonstrated. Phase noise of the electrical clock signal from the OEO is below −101 dBc/Hz at 10 kHz within the whole...
A novel scheme for frequency-hopping (FH) microwave waveform generation is proposed based on a semiconductor laser subject to optical injection. In the proposed system, the optically injected semiconductor laser is operated in period-one oscillation state. After optical-to-electrical conversion, a microwave signal can be generated with its frequency determined by the injection strength. Thus, by controlling...
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