Abstract
A U-shaped optical fiber inline microchannel was fabricated by femtosecond laser irradiation and subsequent selective chemical wet etching. A high quality micro-cavity embedded inside the channel was obtained to construct a Fabry-Perot interferometer (FPI). A fringe visibility of 20 dB in spectrum domain was achieved. High temperature survivability of this micro device was also demonstrated. The proposed assembly-free optical fiber inline interferometer is attractive for sensing applications in high-temperature harsh environments.
| Original language | American English |
|---|---|
| Journal | Proceedings of SPIE, Advanced Fabrication Technologies for Micro/Nano Optics and Photonics VII |
| Volume | 8974 |
| DOIs | |
| State | Published - Feb 1 2014 |
Keywords
- Chemical etching
- Chemical wet etching
- Fabry-Perot interferometers
- Fiber fabry-perot interferometers
- Fringe visibilities
- Fs laser irradiation
- Harsh environment
- High temperature
- Optical fiber fabrication
- Optical fibers
- Selective chemical etching
- Sensing applications
- Temperature sensing
- Ultrashort pulses
- Uranium
Disciplines
- Electrical and Computer Engineering
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