Fiber-Optic Chemical Sensors and Fiber-Optic Bio-Sensors

Area of Science:

• Optoelectronics
• Chemical Sensing
• Biosensing

Background:

• Fiber optic sensor (FOS) systems utilize optical fibers (OF) to guide light across a wide spectral range (UV to mid-IR).
• The interaction between guided light and the surrounding environment enables sensitive detection.
• Introduction of OF into sensor systems offers advantages like remote sensing and operation in harsh environments.

Purpose of the Study:

• To review the fundamental principles of fiber-optic chemical sensors (FOCS) and biosensors (FOBS).
• To summarize the current development status of FOCS and FOBS.
• To highlight the advantages and applications of FOS in sensing.

Main Methods:

• Review of theoretical principles governing OF in sensor applications.
• Discussion of fabrication techniques for FOCS and FOBS.
• Analysis of analytical results achieved with these sensors.

Main Results:

• FOS systems demonstrate broad spectral applicability (180 nm to 10 μm).
• Key benefits include miniaturization, geometrical flexibility, and immunity to electrical noise.
• FOCS and FOBS enable measurements in flammable, explosive, and harsh environments, including remote sensing.

Conclusions:

• Fiber-optic sensing technology offers significant advantages over traditional methods.
• Ongoing development promises further advancements in FOCS and FOBS capabilities.
• These sensors are crucial for diverse analytical applications, especially in challenging conditions.