K.Y. Lee, N. LaBianca, et al.
Journal of Vacuum Science and Technology B: Microelectronics and Nanometer Structures
Bragg gratings have been formed in optical fibres by diffraction of a phase mask. This technique is expanded by allowing for the possibility of shifting the Bragg wavelength for a fixed mask periodicity. This method uses a simple lens to introduce a curvature on to the wavefront of the diffracting light that results in a magnification of the original periodicity formed by the mask. The Letter shows experimentally that the Bragg wavelength is shifted to shorter wavelength by the addition of a converging lens before the mask. © 1993, The Institution of Electrical Engineers. All rights reserved.
K.Y. Lee, N. LaBianca, et al.
Journal of Vacuum Science and Technology B: Microelectronics and Nanometer Structures
D. Kern, K.Y. Lee, et al.
Japanese Journal of Applied Physics
E. Babich, S. Rishton, et al.
American Chemical Society, Polymer Preprints, Division of Polymer Chemistry
J.J. Welser, Sandip Tiwari, et al.
IEEE Electron Device Letters