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چکیده مقاله:

Abstract: The optical fiber ring enhanced detection technology is used to demonstrate a surface plasmon resonance sensing system. The optical fiber sensor has an extensive detection range and a high detection rate. We also look into several performance metrics like the figure of merit (FOM), refractive index, absorption, sensitivity and etc. Based on plasmon-induced absorption (PIA), reflection and the use of silicon optical fiber can improve sensitivity  of (PIA). The experimental results based on fiber ring resonators agree with the stated simulations and measurements based on an optical fiber structure. So the proposed structure provides a new road to optical fiber sensors.

کامنت داوران 

Reviewer 1

In this work, the author studies plasmon resonance in all-optical resonators. The author provides and discusses a compressive simulation analysis. Moreover, the author includes limited experimental validation. The manuscript does not significantly contribute to the literature and is not suitable for publication in Plasmonics.

*The manuscript has a robust theoretical background, which can be considered suitable. However, the content of the results and its discussion is limited. The authors must review this point and improve the information that contributes to the literature.

*The author claims, "Since the first demonstration over 20 years ago, surface plasmon resonance (SPR) fiber sensor research has evolved into a rich and diversified field with a wide range of optical fiber designs, plasmonic coatings, and excitation and interrogation methods." However, the references used to validate this point were published ten years ago. The authors must review this issue.

*The author compares the sensitivity between λ=1140 nm and λ=1720 nm; if one is close to the resonant wavelength, the sensitivity must be higher. These analyses and results are evident and do not provide new information to the literature. In addition, the reported sensitivity is not impressive, considering plasmon resonance.

*Despite plasmonic sensors being attractive and having the potential to propose biosensors, the present manuscripts do not present any new information or impressive results. In addition, the simulation results could be more impressive, or the authors could explore different geometries that provide new approaches   for biosensors based on plasmons;

Reviewer 2

The manuscript presents a study on surface plasmon resonance (SPR) sensors incorporating silicon optical fibers using a circuit model and the finite-difference time-domain (FDTD) method. The work examines the figure of merit (FOM), sensitivity, and refractive index with a focus on enhancing the sensor's detection capabilities through plasmon-induced absorption. The novelty of the sensor design and the breadth of the experimental and simulation studies are commendable. However, several areas require attention to improve the clarity and impact of the manuscript. I would suggest this research for consideration in Plasmonics provided that the authors can justify and address the following concerns.
1. The images in the manuscript are not accurate and clear enough, like Fig. 1, Fig. 2, Fig. 5 and Fig. 11. In addition, the style of the data graph has not been standardized, please improve them.
2. Do you utilize a normalization operation in Fig. 7, and please explain why this operation was performed.
3. The experimental part of your work is insufficient, please add the experimental protocol and the description of the apparatus you used.
4. Comparisons with existing sensors are not mentioned in the article, please add this.
5. The list of references does not cover the last two years, and the author needs to add.
6. The manuscript was well-written, but it contains dispersed typos and grammatical errors. Please check and revise.

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َAmir

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