Ultrasensitive Optical Fiber Sensors Working at Dispersion Turning Point: Review

Citation

Xu, S.; Kang, P.; Hu, Z.; Chang, W.; Huang, F. Ultrasensitive Optical Fiber Sensors Working at Dispersion Turning Point: Review. Sensors 2023, 23, 1725. https://doi.org/10.3390/s23031725

Keywords

• optical fiber sensor
• dispersion turning point
• sensitivity enhancement
• fiber grating
• fiber coupler
• interferometer

Brief

Based on the provided sources, the article is a review that analyzes recently developed ultrasensitive optical fiber sensors working at the Dispersion Turning Point (DTP), covering schemes such as fiber couplers, fiber gratings, and interferometers in terms of their operation principles, device structures, and sensing applications.

Summary

This review paper discusses ultrasensitive optical fiber sensors that achieve high sensitivity by operating at the Dispersion Turning Point (DTP), where the group-effective refractive index difference between modes approaches zero. It analyzes how different sensor types, specifically fiber couplers, fiber gratings (like LPGs), and in-fiber interferometers, utilize this principle for enhanced sensing applications.

Origin: https://www.mdpi.com/1424-8220/23/3/1725