Effect of Spherical Aberration on Fabrication of Fiber Bragg Gratings
Cylindrical convex lenses are commonly used in fabricating fiber Bragg gratings (FBGs) by the phase mask method to increase the energy fluence of UV laser light and thereby enhance FBG productivity. We have found that lens aberrations can affect the efficiency of FBG fabrication by this method. Comparisons of the experimental measurements of FBG transmission minimum as a function of fiber position during irradiation by focussed excimer laser light with ray tracing calculations demonstrate the effect of spherical aberration, particularly for lenses with shorter focal lengths.
- Japanese journal of applied physics. Pt. 1, Regular papers & short notes
Japanese journal of applied physics. Pt. 1, Regular papers & short notes 45(6A), 5035-5038, 2006-06-15
Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physics