TY - JOUR AB - SEM picture of rectangular gratings realised by chemical etching mostly resembled a triangular grating. Symmetric triangular gratings can give better directionality to the DFB laser beam. In this communication,the optimal Bragg order,grating period and tooth height,active layer thickness were presented from a study of the optical power coupling for a symmetric triangular GaAs‐AlGaAs structure. The numerical parameters so obtained were compared to the reported results and found that chemically etched rectangular grating obeys the theory of symmetric triangular grating with remarkable accuracy. VL - 10 IS - 4 SN - 0332-1649 DO - 10.1108/eb051712 UR - https://doi.org/10.1108/eb051712 AU - Jayan V. AU - Vaya P.R. PY - 1991 Y1 - 1991/01/01 TI - OPTICAL POWER COUPLING IN SYMMETRIC TRIANGULAR PERIODIC STRUCTURES T2 - COMPEL - The international journal for computation and mathematics in electrical and electronic engineering PB - MCB UP Ltd SP - 355 EP - 362 Y2 - 2024/03/28 ER -