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Integrated Photoacoustic Ophthalmoscopy and Spectral-domain Optical Coherence Tomography
Published on: January 15, 2013
Quasi-distributed pressure sensor using intensity-type optical coherence domain polarimetry.
S Chen1, I P Giles, M Fahadiroushan
1Department of Electrical and Electronic Engineering, King's College London, Strand, London WC2R 2LS, UK.
Optics Letters
|September 24, 2009
Summary
This study presents a novel quasi-distributed optical fiber sensor for precise physical parameter measurement. The system utilizes white-light interferometry and polarization mode analysis, demonstrating potential for multiple sensor applications.
Area of Science:
- Optoelectronics
- Fiber optic sensing technology
- Interferometry
Background:
- Quasi-distributed sensing offers advantages over point or fully distributed systems.
- High-birefringence (Hi-Bi) fiber enables polarization-sensitive measurements.
- White-light interferometry is suitable for locating sensing units in fiber sensors.
Purpose of the Study:
- To develop and analyze a quasi-distributed optical fiber sensor system.
- To investigate the use of white-light interferometry for sensor unit localization.
- To measure physical parameters via induced cross-coupling in polarization modes.
Main Methods:
- Utilizing a high-birefringence optical fiber.
- Employing white-light interferometry for position detection.
- Measuring physical parameters by analyzing cross-coupling between polarization modes.
Main Results:
- The system successfully locates sensing units along the Hi-Bi fiber.
- Analysis of performance-affecting factors like spurious signals and thermostability was conducted.
- Preliminary experiments with 10 pressure sensors demonstrated system feasibility.
Conclusions:
- The proposed quasi-distributed optical fiber sensor is a viable method for locating sensing units and measuring physical parameters.
- Understanding cross-term spurious signals and thermostability is crucial for system optimization.
- The system shows promise for multi-parameter sensing applications.
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