Development of Visible Multi−Bandpass Filter Based on F−P Structure
Round 1
Reviewer 1 Report
The present paper is prepared on a high level. The investigation provided here is quite novel and actual, as it is concerned with investigations of spectral filtering technology, which is used to suppress interference signals from entering the detector at source achieving high-precision reduction processing.
Based on the system requirements , a multibandpass filter with wavelength range of 400 – 1000 nm has been designed and prepared on BK7 substrate, selecting Ta2O5 and SiO2 as a high and low refractive index materials respectively. According to the Fabri-Perot (F – P) narrowband theory, the bandwidth matching coefficient was analyzed using the transmission peak wavelength interval, the interference order was calculated, and multiple F – P coating systems were connected through matching layers to adjust the transmission peak position and broaden the bandwidth range. Optimized design was then achieved using Macloed film system design software, completing the design of a wide half-wave and cutoff multi-bandpass filter. By analyzing the temperature gradient of the materials, an appropriate preparation process was selected based on changes in refractive index and surface roughness. Sensitivity, filter roughness and weak absorption of the film system were tested, and the results have met the system requirements. In this way, the research on multi-bandpass filters will be further improved to enhance the special filtering capability in future studies, which is of great significance for the development of sensors in smart wearable devices.
In my opinion, the results reported in the paper can be considered as quite original and well developed. Structure of the paper is quite good. The given tables and figures given in the paper are really needed in order to understand the obtained results more clearly. I have appreciated introduction, containing a proper review of the state of the art and previous work in the considered field, as well as a rather large number of references.
Therefore, the paper could be published in the present form.
Author Response
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Reviewer 2 Report
Comments to the Author(s)
Title: Development of Visible Multi-bandpass Filter Based on F-P 2 Structure
The authors reported on spectral filtering technology to reduce noise in smart wearable devices. A multi-bandpass filter with Ta2O5 and SiO2 materials is designed and produced on a BK7 substrate. The filter meets system requirements, achieving high-precision noise reduction. I think this technology has potential for development of wearable devices. I would like to recommend the article for publication with minor revision, I would like to suggest to include few more references from the materials and design perspective.
Author Response
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Reviewer 3 Report
Please see the attached document.
Comments for author File: Comments.pdf
Please revise the whole manuscript.
Author Response
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Reviewer 4 Report
The manuscript entitled “Development of Visible Multi-bandpass Filter Based on F-P Structure” by Hongyan Jiang, Rongwei Fan, Yiqin Ji, Kai Guo, Shifu Xiong, Chen Zhang, Xing Wang, and Deying Chen presents Design and Development of Visible Multi-bandpass Filter.
The manuscript could be recommended for publication after minor modifications. The authors should rewrite the result and discussion in more detail.
All the sentences are too large. Please rewrite them into small sentences which will be easy to read.
Author Response
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Reviewer 5 Report
I suggest major revision with below comments:
1-Theoretical and numerical results should be compared in one fig.
2-Field distributions should be given in one resonance and one non- resonance frequencies.
3-Boundary conditions, mesh sizes, source type, FDTD or FEM, 2D or 3D? This info should be added in the revision.
4-Future applications of the designed paper should be added briefly.
5-Comparison of this work with at least 5 previously published works in the same area should be added.
it was good
Author Response
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Author Response File: Author Response.pdf
Round 2
Reviewer 3 Report
The authors have revised the manuscript well. I think it can be accepted in the current form.
