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Compact optical fiber sensor smart node.

Seth W Lloyd1, Jason A Newman, Daniel R Wilding

  • 1Department of Electrical and Computer Engineering, Brigham Young University, 464 CB, Provo, UT 84602, USA.

The Review of Scientific Instruments
|April 7, 2007
PubMed
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We developed a compact optical fiber sensor interrogator for embedded systems. This smart sensor integrates a broadband source, tunable filter, and microprocessor for digital communication of sensor data.

Area of Science:

  • Optoelectronics
  • Sensor Technology
  • Embedded Systems

Background:

  • Traditional fiber optic sensing systems often require bulky and complex instrumentation.
  • There is a need for integrated, compact solutions for real-time data acquisition in embedded applications.

Purpose of the Study:

  • To develop and present a novel, compact optical fiber sensor interrogator tailored for embedded instrumentation.
  • To demonstrate the system's capability in interrogating and processing data from multiplexed fiber sensors.

Main Methods:

  • The system utilizes a super luminescent diode as a broadband light source.
  • A high-speed tunable micro-electro-mechanical system (MEMS) filter is employed for wavelength selection.
  • Data aggregation, processing, and digital communication are handled by an integrated microprocessor.

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Main Results:

  • The integrated system functions as a compact fiber "smart" sensor.
  • The interrogator successfully processed data from an array of fiber Bragg grating sensors after calibration.
  • The system demonstrated capability for interrogating various multiplexed fiber sensors.

Conclusions:

  • The proposed optical fiber sensor interrogator offers a compact and integrated solution for embedded systems.
  • The developed "smart" sensor is capable of real-time data processing and digital communication.
  • This technology enables versatile applications in distributed sensing and structural health monitoring.