Sensitive on-chip methane detection with a cryptophane-A cladded Mach-Zehnder interferometer

被引：51

作者：

Dullo, Firehun Tsige ^{[1
,2
]}

Lindecrantz, Susan ^{[1
]}

Jagerska, Jana ^{[1
]}

Hansen, Jorn H. ^{[3
]}

Engqvist, Magnus ^{[3
]}

Solbo, Stian Andre ^{[2
]}

Helleso, Olav Gaute ^{[1
]}

机构：

[1] UiT Arctic Univ Norway, Dept Phys & Technol, N-9037 Tromso, Norway

[2] Northern Res Inst, N-9294 Tromso, Norway

[3] UiT Arctic Univ Norway, Dept Chem, N-9037 Tromso, Norway

来源：

OPTICS EXPRESS | 2015年 / 23卷 / 24期

关键词：

SENSOR;

D O I：

10.1364/OE.23.031564

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report a methane sensor based on an integrated Mach-Zehnder interferometer, which is cladded by a styrene-acrylonitrile film incorporating cryptophane-A. Cryptophane-A is a supramolecular compound able to selectively trap methane, and its presence in the cladding leads to a 17-fold sensitivity enhancement. Our approach, based on 3 cm-long low-loss Si3N4 rib waveguides, results in a detection limit as low as 17 ppm. This is 1-2 orders of magnitude lower than typically achieved with chip-scale low-cost sensors. (C) 2015 Optical Society of America

引用

页码：31564 / 31573

页数：10

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