| Type of Document |
Master's Thesis |
| Author |
Huo, Wei
|
| Author's Email Address |
whuo@vt.edu |
| URN |
etd-07132000-11420038 |
| Title |
Controlled Fabrication System of Fabry-Perot Optical Fiber Sensors |
| Degree |
Master of Science |
| Department |
Electrical and Computer Engineering |
| Advisory Committee |
| Advisor Name |
Title |
| Wang, Anbo |
Committee Chair |
| May, Russell G. |
Committee Member |
| Woerner, Brian D. |
Committee Member |
|
| Keywords |
- Real-time Control
- CO2 Laser Control
- PZT
- Optical Fiber
- White Light Interferometer
|
| Date of Defense |
2000-07-10 |
| Availability |
unrestricted |
Abstract
The use of optical fiber sensors is increasing widely in industry, civil, medicine, defense and research. Among different categories of these sensors is the Extrinsic Fabry-Perot interferometer (EFPI) sensor which is inherently simple and requires only modest amount of interface electronics. These advantages make it suitable for many practical applications. Investigating a cost-effective, reliable and repeatable method for optical fiber sensor fabrication is challenging work. In this thesis, a system for controlled fabrication of Fabry-Perot optical fiber sensors is developed and presented as the first attempt for the long-term goal of automated EFPI sensor fabrication. The sensor fabrication control system presented here implements a real-time control of a carbon dioxide (CO2) laser as sensor bonding power, an optical fiber white light interferometric subsystem for real-time monitoring and measurement of the air gap separation in the Fabry-Perot sensor probe, and real-time control of a piezoelectric (PZT) motion subsystem for sensor alignment. The design of optoelectronic hardware and computer software is included. A large number of sensors are fabricated using this system and are tested under high temperature and high pressure. This system as a prototype system shows the potential in automated sensor fabrication.
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| Files |
| Filename |
Size |
Approximate Download Time
(Hours:Minutes:Seconds)
|
| 28.8 Modem |
56K Modem |
ISDN (64 Kb) |
ISDN (128 Kb) |
Higher-speed Access |
| |
edt.pdf |
1.91 Mb |
00:08:50 |
00:04:32 |
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