Sensitivity enhancement of four-core fiber helical long-period gratings near dispersion turning point

Key Points

• Sensitivity enhancement occurs due to the unique structure of helical long-period gratings, optimizing light interaction.
• Key evidence indicates significant performance improvements at specific wavelengths, enhancing fiber optic communication efficiency.
• Analysis of the helical structure in long-period gratings provides insights into dispersion management in optical fibers.
• These findings may enable superior optical sensing capabilities, improving data transmission in telecommunications.