Surface plasmon resonance-enhanced light interaction in an integrated ormocomp nanowire

被引:0
作者
Charusluk Viphavakit
Sakoolkan Boonruang
Christos Themistos
Michael Komodromos
Waleed S. Mohammed
B. M. Azizur Rahman
机构
[1] City University London,School of Mathematics, Computer Science and Engineering
[2] Thailand National Electronics and Computer Technology Center (NECTEC),Photonics Technology Laboratory
[3] Frederick University,Department of Electrical Engineering
[4] Bangkok University,Center of Research in Optoelectronics, Communication and Control System (BU
来源
Optical and Quantum Electronics | 2016年 / 48卷
关键词
Polymer waveguides; Subwavelength structures; Integrated optics devices; Optical design and fabrication;
D O I
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中图分类号
学科分类号
摘要
An integrated ormocomp nanowire coated with gold metal layer is proposed and its optical characteristics with the effect of surface plasmon resonance (SPR) are studied. The integrated rib-like nanowire has a trapezoidal shape with sidewall angles of 75°. It is coated with 50 nm gold layer to introduce the SPR and enhance the evanescent field in the sensing region located at the dielectric/metal interface. The possible field modes, the normalized power confinement, and the SPR peak position of the nanowire are studied over the wavelength and the metal thickness by using the full-vectorial H-field FEM in quasi-TM mode. The attenuation coefficient of the nanowire, the SPR peak wavelength, and the wavelength shift is experimentally extracted for three different cladding materials. The redshift of the supermode coupling between the dielectric mode and the anti-symmetric supermode is observed with the higher cladding-index and larger metal thickness. The improvement of the power confinement in the sensing region with the SPR effect is ten times (10×) better than a previous similar study.
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[1]  
Adhikari B(2004)Polymers in sensor applications Prog. Polym. Sci. 29 699-766
[2]  
Majumdar S(2005)Design study of highly sensitive nanowire-enhanced surface plasmon resonance biosensors using rigorous coupled wave analysis Opt. Express 13 3737-3742
[3]  
Byun K(2007)Optical sensing by optimized silicon slot waveguides Opt. Express 15 4977-4993
[4]  
Kim S(2001)Surface plasmon resonance biosensor based on integrated optical waveguide Sens. Actuators B Chem. 76 8-12
[5]  
Kim D(2010)Light detection enhanced by surface plasmon resonance in metal film Appl. Phys. Lett. 96 153107-2761
[6]  
Dell’Olio F(2008)Polymer single-nanowire optical sensors Nano Lett. 8 2757-9077
[7]  
Passaro VM(2000)Colloidal Au-enhanced surface plasmon resonance for ultrasensitive detection of DNA hybridization J. Am. Chem. Soc. 122 9071-315
[8]  
Dostalek J(2003)Polyaniline nanofibers: facile synthesis and chemical sensors J. Am. Chem. Soc. 125 314-12431
[9]  
Čtyroký J(2006)Nanowire-based enhancement of localized surface plasmon resonance for highly sensitive detection: a theoretical study Opt. Express 14 12419-7
[10]  
Homola J(2001)Evanescently coupled resonance in surface plasmon enhanced transmission Opt. Commun. 200 1-675