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WENWEI NIU1, MING HUANG1,* , ZHE XIAO2, JINGJING YANG1
Metamaterials are artificial multifunctional materials that gain its material properties from its structure rather than inheriting them directly from the materials it is composed of, and it may provide novel tools to significantly enhance the sensitivity and resolution of the sensors. In this paper, we present a nonlinear planar optical waveguide sensor loaded with a metamaterial layer. The dispersion relation of the waveguide is theoretically derived, and we compute the field distribution for the proposed sensor, and find that the field intensity is enhanced comparing with that without metamaterials. We compute the sensitivity and the fraction of total power flowing in the cladding, and investigate the influence of various parameters of the sensor on its sensitivity. Compared to the traditional nonlinear planar optical waveguide sensor, the maximum sensitivity of proposed sensor is 2.167 times for TE mode, and 2.335 times for TM mode. Compared to the metamaterial assisted linear planar optical waveguide sensor, the maximum sensitivity of proposed sensor is 1.167 times for TE mode; For TM mode, the sensitivity of proposed sensor is much higher when increasing the thickness of the guiding layer. It might open a door for designing sensors with specified sensitivity..
Optical sensor, Metamaterials, Nonlinear, Sensitivity, Evanescent field.
WENWEI NIU, MING HUANG, ZHE XIAO, JINGJING YANG, Nonlinear planar optical waveguide sensor loaded with metamaterials, Optoelectronics and Advanced Materials - Rapid Communications, 5, 10, October 2011, pp.1039-1045 (2011).
Submitted at: Aug. 26, 2011
Accepted at: Oct. 20, 2011
Optoelectronics and Advanced Materials - Rapid Communications
(2023): 0.5 - 2023 Journal Citation Reports (Clarivate Analytics, 2024)
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