Title :
Generalized expression for the growth of long period gratings
Author :
MacDougall, Trevor W. ; Pilevar, Saeed ; Haggans, Charles W. ; Jackson, Marvin A.
Author_Institution :
3M Bragg Grating Technol., Bloomfield, CT, USA
Abstract :
Experimental results have shown that the peak loss wavelength of long period gratings can shift in the direction of either shorter or longer wavelengths as the induced index change of the grating increases. An expression, which the authors believe to be novel, is derived and verified experimentally, to explain this phenomena. It is shown that the waveguide dispersion characteristics of the core and clad effective indices play a key role in the evolution of the transmission characteristics of the grating.
Keywords :
diffraction gratings; optical fibre fabrication; fibre Bragg grating; growth; long period grating; peak loss wavelength; refractive index; transmission characteristics; waveguide dispersion; Bragg gratings; Couplings; Fiber gratings; Genetic expression; Optical fiber dispersion; Optical fiber polarization; Optical fibers; Optical frequency conversion; Optical waveguides; Resonance;
Journal_Title :
Photonics Technology Letters, IEEE
