Phase Regeneration of QPSK Signals Based on Kerr Soliton Combs
Round 1
Reviewer 1 Report
There are some minor but important problems in the current version of the manuscript. Thus, some noticeable updates are still needed before it can be finally accepted for the publication.
Comments and Recomendations:
1. The comparison of traditional signal amplification schemes with their own development made by the authors requires a significant, in my opinion, addition. It would be interesting to know the comparative cost (of course, approximately) of the implementation of both schemes, the overall bulkiness of the devices (in comparison) and other advantages and disadvantages.
2. The original proposal of the authors has a clear focus on practical implementation. Therefore, it would be very appropriate to point out some features of the layout of the new equipment, to warn against some mistakes that are not so obvious, but understandable to developers, to give the main practical recommendations.
3. There is a lot of illustrative material in the article, looking at which the reader should clearly be convinced of the correctness of some of the authors' statements. But many of the figures do not have a corresponding accompanying text in sufficient volume, which would indicate what you need to pay attention to, for what purpose this figure is given. This applies to Fig.1 and Fig.3, as well as others. Authors are obliged to make such explanations, even if the latter seem obvious to them. The reader does not have to guess the intentions of the authors.
The manuscript is not bad written and seems to be suitable for publication. I can therefore incline to conclude that such a work is not in contrary to the content of the Journal of "Photonics" and can be published there after minor corrections mentioned above.
Author Response
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Reviewer 2 Report
The authors demonstrated Phase regeneration of QPSK signal based on Kerr soliton combs. Kerr soliton combs have advantages of coherence and low noises, with a great number of comb lines. The work is helpful in practical communication using Kerr comb. I would recommend its publication with revisions after addressing the following questions.
1, The authors should give more detail in the captions of the figures. e.g. what is pzt, voa, in Figure. 1.
2, In Figure 2a, could all the CW light changes to comb lines? if not, I think that the cW light should be filtered out before it reaches EDFA. and anther question: can WSS be placed before EDFA?
3, In Figure 2a, I doubt that the comb generation part which is called "harmonic generation part", is 1549.2 nm and 1552.4 nm harmonic of 1550 nm? I think that the advantages of using Kerr soliton combs is that "harmonic generation part" is not needed.
4, line 155, it seems that "filtered out" should be "filtered"
5, how to stabilize the Kerr soliton comb lines? Since laser injection could induce heat and cause the comb line shift.
Author Response
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Reviewer 3 Report
· Abstract is like conclusion, need to be re-written
· What is the motivation of this figure? Need clarification
· How Kerr principle works in your model? clarify
· It seems the work is like simulation based? Do you have real pictures of experimental study?
· Sensitivity analysis should be presented
· Figure.3 and 4 are just an output from CHIP and kerr solution, how you verify your study?
· Authors should identify and compare the results (Verification and Validation)
Extensive editing of English language required
Author Response
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Author Response File: Author Response.docx
Round 2
Reviewer 3 Report
should accept
slight editing is required
