Please use this identifier to cite or link to this item: https://doi.org/10.1364/AO.43.000049
Title: Measurement of a fiber-end surface profile by use of phase-shifting laser interferometry
Authors: Wang, S. 
Quan, C. 
Tay, C.J. 
Reading, I.
Fang, Z.
Issue Date: 1-Jan-2004
Citation: Wang, S., Quan, C., Tay, C.J., Reading, I., Fang, Z. (2004-01-01). Measurement of a fiber-end surface profile by use of phase-shifting laser interferometry. Applied Optics 43 (1) : 49-56. ScholarBank@NUS Repository. https://doi.org/10.1364/AO.43.000049
Abstract: We describe a laser interferometric system in which two objectives are used to measure surface profile on a connectorized fiber-end surface. By the use of the proposed illumination design a He-Ne laser as a point light source is transformed to an extended light source, which is beneficial to localize interference fringe pattern near the test surface. To obtain an optimal contrast of the interference fringe pattern, the flat mirror with an adjustable reflection ratio is used to suit different test surfaces. A piezoelectric transducer attached on the reference mirror can move precisely along the optical axis of the objective and permits implementation of four-step phase-shifting interferometry without changing the relative position between the CCD sensor and the test surface. Therefore, an absolutely constant optical magnification can be accurately kept to capture the interference fringe patterns resulting from a combination of light reflected from both the reference flat mirror and the test surface. The experimental result shows that surface profile on a fiber-end with surface features such as a small fiber diameter of 125 μm and a low reflection ratio of less than 4% are measurable. Measurements on a standard calibration ball show that the accuracy of the proposed setup is comparable with that of existing white-light interferometers and stylus profilometers.
Source Title: Applied Optics
URI: http://scholarbank.nus.edu.sg/handle/10635/60691
ISSN: 00036935
DOI: 10.1364/AO.43.000049
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

28
checked on Nov 12, 2018

WEB OF SCIENCETM
Citations

22
checked on Oct 17, 2018

Page view(s)

35
checked on Oct 6, 2018

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.