Related Experiment Video
Updated: Apr 30, 2026
09:03
A Silicon-tipped Fiber-optic Sensing Platform with High Resolution and Fast Response
Published on: January 7, 2019
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High-speed fiber-optic bolometry enabled by deconvolution signal processing
Xiaoli Wang1, Babak Moeinimaleki1, Ayush Chinmay1
1Department of Electrical and Computer Engineering, Michigan State University, East Lansing, Michigan 48824, USA.
The Review of Scientific Instruments
|April 29, 2026
Summary
Fiber-optic bolometers (FOBs) now offer high-speed radiation measurements for fusion plasma diagnostics. A new deconvolution method improves temporal resolution, enabling the study of rapid radiation transients.
Area of Science:
- Plasma Physics
- Fusion Energy
- Diagnostic Techniques
Background:
- High temporal resolution measurements are critical for fusion plasma diagnostics.
- Fiber-optic bolometers (FOBs) have advantages but are limited by heat diffusion for direct power reconstruction.
- Existing methods struggle with millisecond-scale phenomena.
Purpose of the Study:
- To develop an advanced signal processing approach for FOBs.
- To improve the temporal resolution of radiated power measurements in fusion plasmas.
- To enable the study of rapid radiation transients.
Main Methods:
- Developed a deconvolution-based numerical signal processing approach.
- Modeled the FOB as a linear time-invariant system.
- Inverted the system impulse response to recover incident radiation power.
Main Results:
- Achieved over two orders-of-magnitude improvement in temporal resolution.
- Successfully reconstructed radiation pulses as narrow as 250 μs.
- Demonstrated a significant advancement over millisecond-scale impulse excitation methods.
Conclusions:
- FOBs combined with deconvolution processing are a promising tool for fusion plasma diagnostics.
- The new method enables the resolution of rapid radiation transients.
- This advancement is crucial for understanding fast plasma phenomena.
