Numerical investigation into the generation of platicons in microresonators driven by a gain-switched semiconductor laser

Teng Shi; Junlin Wu; Yuanlong Fan; Xiaopeng Shao

doi:10.1117/12.2688346

27 November 2023 Numerical investigation into the generation of platicons in microresonators driven by a gain-switched semiconductor laser

Teng Shi, Junlin Wu, Yuanlong Fan, Xiaopeng Shao

Author Affiliations +

Proceedings Volume 12761, Semiconductor Lasers and Applications XIII; 127610R (2023) https://doi.org/10.1117/12.2688346
Event: SPIE/COS Photonics Asia, 2023, Beijing, China

Abstract

Energy-efficient Optical Frequency Combs (OFCs) in the form of the Dissipative Kerr Soliton (DKS) pulses can be generated in the on-chip microresonators with anomalous Group Velocity Dispersion (GVD) pumped by gain switched (GS) Semiconductor Lasers (SLs). However, the achievement of anomalous GVD microresonators needs delicate designs and specific fabrication techniques. In this paper, numerical simulations have been performed for OFCs generation using a GS SL to drive a microresonator with normal GVD which can be readily made in most of the CMOS-compatible platforms. With the aid of rate equations and Lugiato Lefever Equations (LLEs), we numerically demonstrate optical pulses with a flattop square, referred to as platicons, can be generated and their characteristics are influenced by several key system parameters, namely the SL modulation frequency, GVD coefficient and frequency detuning between the SL and microresonator. Moreover, the stability region of the platicon is obtained. Our findings provide a useful guidance and easy way for the generation of energy-efficient chip scale platicons.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

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Teng Shi, Junlin Wu, Yuanlong Fan, and Xiaopeng Shao "Numerical investigation into the generation of platicons in microresonators driven by a gain-switched semiconductor laser", Proc. SPIE 12761, Semiconductor Lasers and Applications XIII, 127610R (27 November 2023); https://doi.org/10.1117/12.2688346

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KEYWORDS

Microresonators

Dispersion

Semiconductor lasers

Laser frequency

Solitons

Modulation frequency

Gain switching

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