Title :
Dual resonant peaks of LP015 cladding mode in long-period gratings
Author :
Shu, Xuewen ; Zhu, Xuemei ; Wang, Qinglin ; Jiang, Shan ; Shi, Wei ; Huang, Zhijian ; Huang, Dexiu
Author_Institution :
Dept. of Optoelectron., Huazhong Univ. of Sci. & Technol., Hubei, China
fDate :
4/15/1999 12:00:00 AM
Abstract :
It is found that the coupling of the guided core mode to a higher order cladding mode may lead to dual resonant wavelengths in long-period gratings (LPGs). The dual peaks of the LP015 cladding mode have been observed to shift towards each other during the second exposure of a 100 μm period grating. It is also shown that the resonant wavelengths of LPGs can be tuned over a wide range by the post-exposure technique
Keywords :
diffraction gratings; fibre optic sensors; optical communication equipment; optical fibres; optical tuning; resonance; LP015 cladding mode; dual resonant peaks; dual resonant wavelengths; fibre gratings; guided core mode coupling; higher order cladding mode; long-period gratings; post-exposure technique; wide range tuning;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19990442
