Optofluidic 1x4 switch

被引：46

作者：

Groisman, Alex ^{[1
]}

Zamek, Steve ^{[2
]}

Campbell, Kyle ^{[1
]}

Pang, Lin ^{[2
]}

Levy, Uriel ^{[2
]}

Fainman, Yeshaiahu ^{[2
]}

机构：

[1] Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA

[2] Univ Calif San Diego, Dept Elect & Comp Engn, La Jolla, CA 92093 USA

来源：

OPTICS EXPRESS | 2008年 / 16卷 / 18期

关键词：

D O I：

10.1364/OE.16.013499

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

An optofluidic 1x4 switch is designed, fabricated, and tested. The switch is based on a blazed diffraction grating imprinted onto silicone elastomer at the bottom of a microfluidic channel that is filled with liquids with different refractive indices. When the condition of a diffraction maximum is met, the laser beam incident on the grating is deflected by an angle proportional to the refractive index mismatch between the elastomer and the liquid in the channel. The switch was tested using four different aqueous salt solutions generating 0(th) to 3(rd) orders of diffraction. The insertion loss was < 2.5dB, the extinction ratio was > 9.8dB, and the response time was 55 ms. The same basic design can be used to build optofluidic switches with more than 4 outputs. (c) 2008 Optical Society of America.

引用

页码：13499 / 13508

页数：10

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