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Updated: Apr 30, 2026

A Silicon-tipped Fiber-optic Sensing Platform with High Resolution and Fast Response

A Silicon-tipped Fiber-optic Sensing Platform with High Resolution and Fast Response

Published on: January 7, 2019

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

This summary is machine-generated.

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.

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Last Updated: Apr 30, 2026

A Silicon-tipped Fiber-optic Sensing Platform with High Resolution and Fast Response

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Published on: January 7, 2019

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Published on: November 7, 2016

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.