TONG Zhi, TAO Feng, WEI Huai, et al. Numerical Analysis of Coupling from Core Mode to Radiation Mode in Long Period Fiber Gratings[J]. Acta Electronica Sinica, 2003, 31(1): 109-116.
TONG Zhi, TAO Feng, WEI Huai, et al. Numerical Analysis of Coupling from Core Mode to Radiation Mode in Long Period Fiber Gratings[J]. Acta Electronica Sinica, 2003, 31(1): 109-116.DOI:
In this paper we develop a complete model to simulate the properties of a long-period fiber grating whose cladding index is lower than the ambient refractive index based on coupled-mode theory and radiation-mode theory
and we also present a new method to solve the radiation-mode coupling equations numerically.The characteristics of coupling from core-mode to radiation-mode in a LPG is analysed
and the general rules are summarized
which agrees well with experimental results.In addition
this model can be easily applied to fiber Bragg gratings.