In this paper the resonant wavelength of a long period fiber grating (LPG)
is tuned toward longer wavelength by etching the fiber, For LP04 and LP05 c
ladding modes', the tuning ranges of 23 and 81 nm are achieved, respectivel
y. Also the dependence of the resonant wavelength on the cladding radius of
LPG is theoretically simulated. (C) 2001 Elsevier Science B,V. All rights
reserved.