Study on the Acousto-Optic Coupling Effect of a One-Dimensional Hetero-Optomechanical Crystal Nanobeam Resonator

Round 1

Reviewer 1 Report

The authors  propose a high optomechanical coupling rate  heterostructure with a gradient cavity, and the optomechanical  rates of the single mirror and hetero-optomechanical crystal nanobeam resonators are calculated. In my opinion, this manuscript contains new interesting results. I would recommend the authors carefully consider the following questions and comments.

 

1. The authors are encouraged to talk about their motives and advantage of using  hetero-optomechanical crystal nanobeam  resonator  settings in the revised paper.

2. Please check the manuscript carefully. There are several mistakes in grammar and typesetting. For example, "The structure made from a one-dimensional hetero-optomechanical crystal nanobeam is proposed, as depicted in Figure 1." "The sentence after eq. 4 should not have two blank". There are many similar situations in the manuscript .

3.I hope that the author could include some discussion of this characteristic respect to others similar proposals published before。

4.The main concern that I have is that there is no discussion about the connection of the experimental realization of the proposal.

Author Response

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Author Response File: Author Response.docx

Reviewer 2 Report

In this article, Jian-Xu Lan et al., investigated the acousto-optic coupling effect of a one-dimensional hetero-optomechanical crystal nanobeam resonator with gradient cavities using finite element simulations. The stated results are interesting and the manuscript is also well organized/written, which will likely to attract attention and impact in hetero-optomechanical crystal based nanobeam resonator applications. As such, I believe that the manuscript is suitable for publication in Photonics journal; However, there are some points that needs to be clarified:

1)      In general, acoustic resonator devices mechanism can be probed to mass/conductivity and elastics effects under certain circumstances. But in this article the authors have optomechemical coupling rate caused by the moving boundary effect and the photoelastic effect. Please explain the significance and its working principle. Whereas, under optical coupling conductivity may also can be changed.

2)      Since mirrors were used on either side of the defect area. What is the estimated reflection and transmission coefficient.

3)      How about the area/size of both mirrors?

4)      Explain the factors of increase in Quantity factor for heterostructure.

 

 

Author Response

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Author Response File: Author Response.docx

Reviewer 3 Report

Please see comments in .pdf file attached.

Comments for author File: Comments.pdf

Author Response

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Author Response File: Author Response.docx