Dual resonant peaks of LP015 cladding mode in long-period gratings

作者：Shu XW^*; Zhu XM; Wang QL; Jiang S; Shi W; Huang ZJ; Huang DX

来源：Electronics Letters, 1999, 35(8): 649-651.

DOI：10.1049/el:19990442

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 LP,,, cladding mode have been observed to shift towards each other during the second exposure of a 100 mu m period grating. It is also shown that the resonant wavelengths of LPGs can be tuned over a wide range by the post-exposure technique.

• 出版日期1999-4-15
• 单位武汉邮电科学研究院; 华中科技大学