Abstract
A quantum dot mode locked laser can generate microwave frequencies, functioning as a photonic microwave oscillator. The advantages of this microwave oscillator include the compact size of the laser device, the low phase noise, the tunability of the output power and frequency as well as the high optical to electrical conversion efficiency. Despite the advantages of this oscillator though, a maximum microwave output power in the order of -10 dBm has been reported so far, denoting a possible need for further amplification of the signal in certain applications. In this work, we propose the idea of power combining of the microwave outputs of multiple QDMLL devices, by using injection locking, as a method to amplify the generated signal. The injection locking properties of the QDMLL device are studied and presented.
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