LSPR BASED OPTICAL SENSORS

Abstract

Nano photonics, sometimes referred to as Nano-optics, is the field of research that focuses on the behavior of light at Nano sizes and the interaction between Nano scale objects and light. The interactions are governed by the physical and structural features of nanostructured matter, which take place on a scale that is either the same as or smaller than the wavelength. Nanophotonics has a significant impact on various real-world applications, such as biomedical imaging for diagnosing and treating illnesses, novel imaging systems in cameras, sensors, and sensor systems for chemicals or bioanalytes, as well as nanophotonic devices like switches and modulators for communications. Plasmonics, a subfield of nano photonics, focuses on investigating the resonant interactions that take place at the interfaces between conduction electrons and electromagnetic radiation in metal-dielectric systems.Plasmonics provides the solution. Plasmonics may hold the solution: these technologies can combine the best features of photonics and electronics. Plasmonic devices inherently possess low energy consumption. From a logical and connection perspective, it is possible that this could be the answer. Predictive and preventive maintenance are among the numerous benefits of sensor technology. Not only do they ensure faster delivery of measurement data, but they also enhance accuracy, hence enhancing asset health and process control. Therefore, we will utilize high-efficiency plasmonics to fabricate and simulate a range of sensors and devices. This article presents a comprehensive examination of the devlopment of plasmonic-besed optical fiber sensors during the last decade. Optical fiber sensing technology is extensively used for the detection and monitoring of chemical, physical, and biological features due to its numerous advantages. In this section, we have provided a concise overview of the historical background, prior experimental investigations on localized surface plasmon resonance (LSPR) [40-41] and propagating SPR. We have finished by discussing potential future directions and discoveries. Advancements in nano-optics have led to the creation of optical systems that do not require labels and are sensitive to changes. This has been achieved by employing SPR and LSPR methods on metal films and nanostructures. This survey focuseing on the significant influence of applications based fiber optic plasmonic sensors that have been documented in the last decade. This review aims to provide researchers and students with a comprehensive and well-structured summary of the literature on the fundamental principles, latest developments, and practical applications of optical fiber plasmonic sensors.