Study on the Influence of Atmospheric Light Intensity Scintillation Effect on Optical Fiber Coupling Efficiency
Round 1
Reviewer 1 Report
Comments and Suggestions for AuthorsDear Editor,
In this manuscript, the authors experimentally study the effect of atmospheric light intensity on optical fiber coupler efficiency. The topic of this work is interesting and its results can be useful for readers. The manuscript is unacceptable in its present form and needs to be revised.
1. Physically explain the concept of the scintillation index to clarify its importance.
2. What is the cross-sectional area of ​​the detector? What is the minimum signal detectable by it? What is the dark current of the detector?
3. Have you checked the effect of access noise in your work?
4. How have you considered weather conditions such as dust, temperature, and air humidity?
5. It is necessary to introduce the equipment used in the experiments.
6. What kind of lens did you use to focus the light?
7. How did you choose the bias voltage of the detector? What is the current gain in the APD detector?
8. Explain about fiber and its numerical aperture.
Kind regards,
Author Response
Please see the attachment.
Author Response File: 
Author Response.pdf
Reviewer 2 Report
Comments and Suggestions for Authors
The Communication is devoted to the study of light intensity scintillation caused by atmospheric turbulence. Although the study is quite short, it is generally interesting and will be of interest for the physics in the field of optical turbulence and in application to fiber coupling also. However, the manuscript needs editing.
- Figure 4, the authors use the Hufnagel Valley empirical model. However, this model is variable for different sites and regions. Please, describe in more detail how you create the realization of this model, what measurements you used to set the surface Cn2 values and wind characteristics.
-Figure 4, the measured vertical profile of optical turbulence demonstrates the complex nature of the vertical changes in Cn2. What physical factors are associated with the peaks in Cn2 profiles at different heights. Please clarify.
- Figure 4, this profile corresponds to atmospheric conditions over flat terrain. Does the nature of vertical changes in optical turbulence that you obtained differ from the data of other researchers? For example, you can compare the profiles you obtained with the profiles obtained in the works of [Shikhovtsev, A.Y. et al. Simulating Atmospheric Characteristics and Daytime Astronomical Seeing Using Weather Research and Forecasting Model. Appl. Sci. 2023, 13, 6354. and Rod Frehlich Estimates of Cn2 from Numerical Weather Prediction Model Output and Comparison with Thermosonde Data // Journal of Applied Meteorology and Climatology. 2010. https://doi.org/10.1175/2010JAMC2350.1 ].
- Table 2. Explain the rounding used (4 digits after the point), it seems to me that the rounding is redundant, reduce it to two digits. The same remark applies to the entire text of the manuscript (for example, in the abstract he scintillation index is measured to be 0.6288 (it is better to use 0.63) and the coupling efficiency is 0.0568 (it is better to use 0.57).
- Please also discuss the novelty of you study.
Author Response
Please see the attachment.
Author Response File: Author Response.pdf
Round 2
Reviewer 1 Report
Comments and Suggestions for AuthorsDear Editor,
The authors have addressed the comments so I think the revised version of the manuscript can be accepted.
Kind regards
Reviewer 2 Report
Comments and Suggestions for AuthorsWe think that a big work in improvement of the manuscript has been done. The results provided and discussed in the manuscript, although in a brief shape, are interesting for us, and we believe that the results will be also interesting for another specialists. We recommend the manuscript for publication.
