Hybrid Plasmonic Fiber-Optic Sensors

Area of Science:

• Photonics and Nanotechnology
• Advanced Materials Science
• Optical Sensing

Background:

• Optical fibers offer sensitive, integrated, flexible, and real-time sensing capabilities.
• Plasmonic fiber-optic sensors, leveraging surface plasmon resonance (SPR) and localized SPR (LSPR), exhibit remarkable sensitivity due to plasmon-matter interactions.
• Conventional SPR/LSPR sensors rely on metallic films or nanoparticles on fiber surfaces.

Purpose of the Study:

• To review and explore the frontiers of hybrid plasmonic fiber-optic platforms.
• To highlight recent advancements in nanomaterials and fiber structure design for improved sensor performance.
• To discuss applications of these advanced sensing platforms.

Main Methods:

• Review of recent research on hybrid plasmonic fiber-optic sensors.
• Exploration of novel nanomaterials (e.g., 2D materials, transition metal oxides, functionalized nanoparticles) and their integration.
• Analysis of advanced fiber structures (e.g., microstructured optical fibers) for enhanced sensing.

Main Results:

• Graphene enhances surface plasmon intensity.
• 2D transition metal oxides enable intrinsic plasmonics for high-sensitivity detection.
• Functionalized gold nanoparticles offer high selectivity and low detection limits.
• Microstructured optical fibers improve sensitivity and reduce polarization crosstalk.

Conclusions:

• Recent advances in nanomaterials and fiber design are significantly improving plasmonic fiber-optic sensor performance.
• These hybrid platforms demonstrate enhanced sensitivity, specificity, and biocompatibility for diverse sensing applications.
• The review explores the cutting-edge developments and future potential of these advanced optical sensing technologies.