JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION
|
1993年
/
10卷
/
02期
关键词:
D O I:
10.1364/JOSAA.10.000269
中图分类号:
O43 [光学];
学科分类号:
070207 ;
0803 ;
摘要:
A rigorous analysis of wave guidance by dielectric grating waveguides is presented for the general case that both the grating vector and the direction of the guided wave have an arbitrary orientation in three dimensions. Guided modes then become TE-like and TM-like modes owing to the coupling between TE and TM waves. The analysis is formulated in a unified matrix form so that guidance properties can be obtained accurately in any level by systematic matrix calculations. The calculated results indicate that peculiar stop bands and leaky waves appear as a result of coupling between TE and TM waves.