Compact and efficient injection of light into band-edge slow-modes

被引：23

作者：

Velha, P. ^{[1
]}

Hugonin, J. P. ^{[1
]}

Lalanne, P. ^{[1
]}

机构：

[1] Univ Paris Sud, CNRS, Lab Charles Fabry, Inst Opt, F-91127 Palaiseau, France

来源：

OPTICS EXPRESS | 2007年 / 15卷 / 10期

关键词：

D O I：

10.1364/OE.15.006102

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We design compact (a few wavelength long) and efficient (>99%) injectors for coupling light into slow Bloch modes of periodic thin film stacks and of periodic slab waveguides. The study includes the derivation of closed-form expressions for the injection efficiency as a function of the group-velocity of injected light, and the proof that 100% coupling efficiencies for arbitrary small group velocities is possible with an injector length scaling as log(c/v(g)). The trade-off between the injector bandwidth and the group velocity of the injected light is also considered. (C) 2007 Optical Society of America

引用

页码：6102 / 6112

页数：11

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