Abstract
We present the first application of a two-core photonic crystal fibre for fringe projection for use as a Doppler difference velocimeter. The two-core fibre projects a series of fringes when both cores are simultaneously illuminated with 633 nm light. Light scattered from moving particles is coupled into a separate multi-mode collection fibre and detected using a silicon detector and amplifier. The scattered signal is processed in the frequency domain to obtain the particle velocity component perpendicular to the fringes. © 2003 Published by Elsevier B.V.
Original language | English |
---|---|
Pages (from-to) | 375-380 |
Number of pages | 6 |
Journal | Optics Communications |
Volume | 223 |
Issue number | 4-6 |
DOIs | |
Publication status | Published - 1 Aug 2003 |
Keywords
- Fibre optic sensor
- Laser Doppler difference
- Photonic crystal fibre
- Velocity measurement