Timing jitter reduction of silicon hybrid harmonically mode-locked ring laser using an integrated sampled-grating DBR

Mohammad Hasan yavari | Mohammad Shekarpour

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URL :   http://research.shahed.ac.ir/WSR/WebPages/Report/PaperView.aspx?PaperID=159491
Date :  2022/04/15
Publish in :    Optics Letters
DOI :  https://doi.org/10.1364/OL.452246
Link :  http://dx.doi.org/10.1364/OL.452246
Keywords :Timing Jitter, Noise, Laser

Abstract :

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An integrated sampled-grating silicon hybrid mode-locked ring laser is proposed for 20-GHz super-mode noise suppression. The dynamics, phase noise, and timing jitter are investigated using a delay differential equation (DDE) model. The results show that the 20-GHz harmonic regime of the proposed structure is significantly increased when the sampled-grating structure is included. Additionally, a better selectivity of the optical modes by a sampled-grating distributed Bragg reflector (SGDBR) leads to more suppression of super-mode noise compared to the long-ring structures with a spectral filter which were previously reported. Compared to previous works, the phase noise is improved by approximately 6 dB and the timing jitter is decreased to less than a third.