Abstract
Some aspects concerning the subfringe integration method in interferogram analysis have been investigated and modified. The modified algorithm, introduced in this paper, is capable of reconstructing the phase in the presence of noise or errors in carrier frequency. The subfringe integration method was applied to analyze two computer simulated patterns of equispaced Fizeau fringes using N bucket integration. Also, it is used to analyze the multiple-beam Fizeau fringe. The refractive index profile of polyethylene fiber is obtained by using two methods, subfringe integration method, and Fourier transform method. A comparison between the obtained results using the maintained methods is presented.
| Original language | English |
|---|---|
| Pages (from-to) | 223-232 |
| Number of pages | 10 |
| Journal | Optics and Laser Technology |
| Volume | 35 |
| Issue number | 3 |
| DOIs | |
| State | Published - Apr 2003 |
| Externally published | Yes |
Keywords
- Automatic fringe analysis
- Fourier transform
- Multiple beam Fizeau fringes
- Phase measurement
- Polyethylene fiber
- Refractive index profile
- Subfringe integration
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