Traditional spectroscopy systems are large, complex, and unsuitable for applications in confined spaces or minimally invasive procedures. This limitation poses challenges for fields like intravascular diagnostics where precision, small sample volumes, and compact designs are essential. To address these issues, researchers at Jinan University have developed a groundbreaking miniaturized optical fiber spectrometer.

The fiber photoacoustic spectrometer (FPAS) achieves a parts-per-billion (ppb) detection limit for trace gas sensing without requiring a bulky resonant gas cell. This all-in-one device can analyze sub-nanoliter-sized samples with millisecond response times, providing laboratory-level precision in a microscale format. The FPAS’s innovative design integrates a Fabry-Perot cavity at the tip of a single optical fiber, dramatically reducing its size while maintaining high sensitivity.

With applications ranging from continuous intravascular blood gas monitoring to lithium-ion battery health assessments and explosive gas detection, the FPAS overcomes the limitations of traditional systems. It requires minimal sample volumes, operates in real-time, and fits within narrow or inaccessible spaces, making it a transformative tool for diagnostics and monitoring. By eliminating the need for bulky components and sample extraction, the FPAS represents a significant advancement in precision spectroscopy, offering a compact, cost-effective, and highly versatile solution for diverse industries.

Article written by Photonics team

26/12/2024

Source:

Photonics

https://www.photonics.com/Articles/Tiny_Fiber_Photoacoustic_Spectrometer_Enables/p5/a70590