Fiber-Based Techniques to Suppress Stimulated Brillouin Scattering
Round 1
Reviewer 1 Report
This manuscript reviewed fiber-based techniques to suppress Stimulated Brillouin scattering. Overall it is comprehensive and written well, which will give readers better understanding of this topic. I recommend it be accepted. It would be better if authors do future improvement according to my suggestions:
1. Authors need to give more explanations to Figure 5, like the type of fibers. Also, the authors may point out if the acoustic modes shown in the figure are angle dependent or not.
2. There are some grammar mistakes. For example, in first section, paragraph 4, “In some areas, however, SBS is viewed undesirable in some areas.” “In some areas” appeared twice.
3. In section 3.1.1, the authors may give some explanations about that “The mode effective area increases when the core diameter exceeds a certain value”,
Author Response
For all of reviewer 1's concerns, the revision has been made.
For the first point, we modified our description "Figure 5 shows the electric mode and acoustic mode under different index profiles (conventional SMF and Corning large effective area fiber). Three lowest order acoustic modes non-dependent on angle are displaced."
For the second point, the error in the sentence has been corrected.
For the third point, we modified our description "Figure 7 shows the relationship between the core diameter and mode effective area for GeO2 doped step-index fiber with different numerical aperture (NA). The mode effective area increases when the core diameter exceeds a certain value. Below that value, core diameter is not large enough to confine electric mode"
Reviewer 2 Report
The manuscript reviewed fiber-based techniques to suppress SBS comprehensively and thoroughly. The manuscript is suitable to be published as is.
Author Response
Thanks for reviewing our paper
Reviewer 3 Report
This manuscript reviews several fiber based approaches for SBS reduction. These approaches have been introduced in many papers, theses and textbooks, and few of the approaches are developed by the authors of the submitted manuscript. Basically, this manuscript is more like a chapter of a textbook rather than a research paper. No novelty or contribution to the nonlinear fiber optics related research is embodied in this manuscript. In conclusion, I strongly suggest this manuscript be rejected.
Author Response
Response to Reviewer 3:
This review paper aims to present the readers with the big picture of how fiber-based techniques are used to suppress stimulated Brillouin scattering. The reviewer stated that there are many review papers, this paper has limited value. We do not agree.
We cover fiber-based techniques with focuses on high power fiber lasers and passive optical networks. We do not see many papers reviewing passive optical networks suppressing stimulated Brillouin scattering. Also, we believe that some techniques in high power fiber lasers could be applied to conventional passive optical networks, and vice versa. Thus, we give readers all the ingredients of fiber-based techniques in these applications. Researchers could get inspiration from other fields. Further, with big improvement in fiber manufacturing technique recently, more techniques once viewed impractical could be applied. We believe that longitudinal variant fiber design fits that category and has big potential in further research and we present this technique with whole section.
Round 2
Reviewer 3 Report
This manuscript can be accepted in the present form.
