Refractive index sensor based on hybrid coupler with short-range surface plasmon polariton and dielectric waveguide

An integrated sensor based on a vertical hybrid coupler composed of a short-range surface plasmon polariton (SRSPP) waveguide and a SiNx dielectric waveguide has been realized. The output power of the sensor is observed to change drastically with the refractive index of the detection liquid, and the sensing region can be adjusted by varying the width of the SiNx waveguide. The resolution is estimated to be as high as 7.3 × 10−6 refractive index units. This sensor is expected to have significantly high effective sensitivity for detecting a hundred-nanometer-thick layer owing to the highly bounded field of the SRSPP mode.

[1]  Burke,et al.  Surface-polariton-like waves guided by thin, lossy metal films. , 1986, Physical review. B, Condensed matter.

[2]  Ramakant Srivastava,et al.  A THEORETICAL INVESTIGATION OF ENVIRONMENTAL MONITORING USING SURFACE PLASMON RESONANCE WAVEGUIDE SENSORS , 1995 .

[3]  E. Palik.  Handbook of Optical Constants of Solids , 1997 .

[4]  Günter Gauglitz,et al.  Surface plasmon resonance sensors: review , 1999 .

[5]  J. Homola.  Present and future of surface plasmon resonance biosensors , 2003, Analytical and bioanalytical chemistry.

[6]  X. D. Hoa,et al.  Towards integrated and sensitive surface plasmon resonance biosensors: a review of recent progress. , 2007, Biosensors & bioelectronics.

[7]  M. Vala,et al.  Diffraction grating-coupled surface plasmon resonance sensor based on spectroscopy of long-range and short-range surface plasmons , 2007, SPIE Optics + Optoelectronics.

[8]  Jing Guo,et al.  Dual-mode surface-plasmon-resonance sensors using angular interrogation. , 2008 .

[9]  Fang Liu,et al.  Excitation of short range surface plasmon polariton mode , 2008, 2008 International Nano-Optoelectronics Workshop.

[10]  Fang Liu,et al.  Vertical coupling between short range surface plasmon polariton mode and dielectric waveguide mode , 2009 .

[11]  S. Haxha,et al.  Design and optimization of a novel surface plasmon resonance biosensor based on Otto configuration. , 2009, Optics express.

[12]  Min-Suk Kwon.  Disposable and compact integrated plasmonic sensor using a long-period grating. , 2010, Optics letters.

[13]  Robert Magnusson,et al.  Demonstration of long-range surface plasmon-polariton waveguide sensors with asymmetric double-electrode structures , 2010 .

[14]  Yidong Huang,et al.  Hybrid coupler with short range surface plasmon polariton and dielectric waveguide , 2010, 2011 Asia Communications and Photonics Conference and Exhibition (ACP).