Broadband Acoustic Sensing with Optical Nanofiber Couplers Working at the Dispersion Turning Point

Citation

Gao, X.; Wen, J.; Wang, J.; Li, K. Broadband Acoustic Sensing with Optical Nanofiber Couplers Working at the Dispersion Turning Point. Sensors 2022, 22, 4940. https://doi.org/10.3390/s22134940

Keywords

Based on the sources, the article designs and experimentally demonstrates a broadband ultrasensitive acoustic sensor based on an optical nanofiber coupler operating at the Dispersion Turning Point (DTP) attached to a diaphragm.

Summary

The paper designs and demonstrates a highly sensitive acoustic sensor using an optical nanofiber coupler attached to a diaphragm. It achieves broadband detection (30 Hz-20 kHz) and ultra-high sensitivity, particularly by operating the nanofiber coupler at the Dispersion Turning Point (DTP), where its sensitivity to strain (induced by the diaphragm's vibration from acoustic waves) is significantly enhanced.

Origin: https://www.mdpi.com/1424-8220/22/13/4940