EFFECT OF BEAM DEFOCUS ON THE EFFICIENCY OF PLANAR WAVE-GUIDE GRATING COUPLERS

被引：5

作者：

GUPTA, MC ^{[1
]}

LI, LF ^{[1
]}

机构：

[1] UNIV ARIZONA,CTR OPT SCI,TUCSON,AZ 85721

来源：

APPLIED OPTICS | 1991年 / 30卷 / 30期

关键词：

GRATING COUPLERS; INTEGRATED OPTICS; GUIDED WAVES;

D O I：

10.1364/AO.30.004402

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Results of theoretical calculations and experimental measurements of variation of grating coupling efficiency with beam-defocus position are presented. Our results indicate that (1) coupling efficiency is not necessarily maximum at the beam waist, (2) coupling efficiency as a function of defocus position shows oscillatory behavior particularly for a tightly focused beam. The effect of beam size alone cannot account for the observed behavior of variation of coupling efficiency with defocus position. The results of measured angular dependence of coupling efficiency for various defocus conditions are also presented.

引用

页码：4402 / 4405

页数：4

共 11 条

[1]

Gupta M. C., 1988, Proceedings of the SPIE - The International Society for Optical Engineering, V993, P44, DOI 10.1117/12.960069

[2] LOW-OPTICAL-LOSS GLASS THIN-FILMS [J].