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Indian Institute of Technology Madras

Optical Fiber Sensors

Indian Institute of Technology Madras and NPTEL via Swayam

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Optical Fiber Sensors is intended as a senior undergraduate / graduate level course that introduces the different types of optical sensor technologies and their applications in metrology, navigation, and structural health monitoring. The learning objectives of the course include: Identify different types of optical sensors and their performance characteristics Analyze a given sensing requirement and design appropriate sensor Realize and implement an optimal sensing solution for a given requirementINTENDED AUDIENCE : Final year UG, and PG students including MS/PhD studentsPREREQUISITES : Introduction to Photonics (preferable)INDUSTRIES SUPPORT : Sterlite Technologies, SFO Technologies, TAG, Forbes Marshall


Week 1-2:
  • Why optical sensors?
  • Different types Sensors & Instrumentation metrics
  • Optical receiver design; noise issues
Week 3-4:
  • Amplitude Modulated sensors
  • Lock-in detection
Week 5-6:
  • Phase modulated sensors
  • Phase noise analysis and mitigation; Sensitivity limits
Week 7-8:
  • Wavelength modulated sensors
  • Interrogator design, sensitivity limits
Week 9:
  • Polarization Modulated Sensors
  • Analysis of current sensor
Week 10-12:
  • Distributed Fiber Sensors
  • Raman & Brillouin scattering-based sensors

Taught by

Prof. Balaji Srinivasan


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