Relative Intensity Noise of Gain-Switched Dual-State Lasing for an Insein(113)B Quantum Dot Laser

Round 1

Reviewer 1 Report

Comments and Suggestions for Authors

The paper titled "RIN of Gain-Switched Dual-State Lasing for InAs-InP(113)B Quantum Dot Lasers" is about a relevant topic in the field of quantum dot lasers and suggests a strategy to reduce relative intensity noise (RIN) in gain-switched configurations. Below, I outline the main aspects that could be improved:

Introduction: A broader review of existing works is necessary, with a more extensive literature review.

Novelty: While the study addresses a relevant issue, the methodology follows well-established lines in the literature. It would be beneficial to highlight more the innovative contribution of the work and how it differs from previous studies in the field.

Methodology: The numerical solution is based on the Runge-Kutta method. However, certain simplifications, such as temperature effects and carrier losses, have been made without a detailed discussion of their impact on the results. A deeper analysis of these approximations would strengthen the validity of the model.

Validation: The authors do not explicitly compare their results with theoretical models or experimental data that would establish some degree of validity for the study.

Reproducibility: The manuscript does not report every value of the parameters used. It is important that the academic community can reproduce the results using the data provided in the manuscript.

Impact and applicability: Although the article mentions applications in telecommunications, expanding the discussion on the feasibility of the proposed approach in real technological contexts would be advisable. A comparative analysis with other strategies available in the literature would better highlight the advantages of the method.

Discussion and analysis of results: The results obtained could be further detailed to enhance the understanding derived from them.

Since these aspects require further development, I consider that the manuscript, in its current version, is not suitable for publication.

Author Response

Please see the attachment

 

Author Response File: Author Response.pdf

Reviewer 2 Report

Comments and Suggestions for Authors

The manuscript investigates the relative intensity noise (RIN) characteristics of InAs/InP(113)B quantum dot lasers under gain-switching conditions. The study compares the noise properties between the direct relaxation model (DRM) and the cascade relaxation model (CRM), demonstrating that while both models exhibit similar RIN behavior, the CRM produces slightly shorter pulses. The authors employ a Gaussian pulse excitation to the excited state to enhance laser performance and achieve reduced RIN. The findings contribute to improving the efficiency and stability of quantum dot lasers for optical communication applications. I recommend minor revisions to enhance clarity, provide more discussion on practical applications, and refine the figures for better readability.

1. How does this work compare with prior experimental studies on gain-switched quantum dot lasers? A brief comparison would provide context for the significance of these results.
2. Some axis labels and legends in the figures are relatively small and should be enlarged for readability.
3. If experimental work is not feasible at this stage, discussing potential experimental setups or referencing similar experimental studies would be beneficial.

Comments on the Quality of English Language

The English could be improved to more clearly express the research.

Author Response

Please see the attachment

Author Response File: Author Response.pdf

Round 2

Reviewer 1 Report

Comments and Suggestions for Authors

After evaluating the revised version of the manuscript titled "RIN of Gain-Switched Dual-State Lasing for InAs-InP(113)B Quantum Dot Lasers", I find that significant improvements have been made in terms of quality and clarity. The following key aspects demonstrate the enhancements incorporated in this version:

1. The introduction has been improved with additional references.
2. The revised manuscript includes a more detailed discussion of the approximations used in the model.
3. The comparison of results with experimental data and previous theoretical models provides a quantitative foundation for the study's conclusions.
4. Refinements in the manuscript’s writing and structure have enhanced the readability and coherence of the content.
5. The conclusion section now includes a more in-depth analysis of the potential applications of quantum dot lasers in telecommunications and other technological fields.

Given that the revisions have improved both the content and presentation of the manuscript, I consider that it is suitable for publication.