Fabrication and characterization of a negative-refractive-index composite metamaterial

2004 ◽  
Vol 70 (11) ◽  
Author(s):  
A. F. Starr ◽  
P. M. Rye ◽  
D. R. Smith ◽  
S. Nemat-Nasser
Keyword(s):  
Refractive Index ◽  
Negative Refractive Index ◽  
Fabrication And Characterization

scholarly journals Fabrication and characterization of a hybrid four-hole AsSe_2-As_2S_5 microstructured optical fiber with a large refractive index difference

2014 ◽  
Vol 22 (11) ◽  
pp. 13322 ◽  
Author(s):  
Tonglei Cheng ◽  
Yasuhire Kanou ◽  
Dinghuan Deng ◽  
Xiaojie Xue ◽  
Morio Matsumoto ◽  
...  
Keyword(s):  
Refractive Index ◽  
Optical Fiber ◽  
Microstructured Optical Fiber ◽  
Refractive Index Difference ◽  
Fabrication And Characterization

scholarly journals Fabrication and characterization of micro fluidic based fiber optic refractive index sensor

2017 ◽  
Vol 13 ◽  
pp. 70-74 ◽  
Author(s):  
I.S.L. Abdul Hamid ◽  
Y. Mustapha Kamil ◽  
A. Abd Manaf ◽  
M.A. Mahdi
Keyword(s):  
Refractive Index ◽  
Fiber Optic ◽  
Refractive Index Sensor ◽  
Fabrication And Characterization

scholarly journals Fabrication and Characterization of a Refractive Index Sensor Based on SPR in an Etched Plastic Optical Fiber

2015 ◽  
Vol 120 ◽  
pp. 969-974 ◽  
Author(s):  
Yusser Al-Qazwini ◽  
A.S.M. Noor ◽  
Mohd H. Yaacob ◽  
S.W. Harun ◽  
M.A. Mahdi
Keyword(s):  
Refractive Index ◽  
Optical Fiber ◽  
Refractive Index Sensor ◽  
Plastic Optical Fiber ◽  
Fabrication And Characterization

scholarly journals Negative Index Metamaterial Lens for Subwavelength Microwave Detection

Sensors ◽  
2021 ◽  
Vol 21 (14) ◽  
pp. 4782
Author(s):  
Srijan Datta ◽  
Saptarshi Mukherjee ◽  
Xiaodong Shi ◽  
Mahmood Haq ◽  
Yiming Deng ◽  
...  
Keyword(s):  
Refractive Index ◽  
Periodic Structures ◽  
Negative Refractive Index ◽  
Far Field ◽  
Lens Design ◽  
Theoretical Formulation ◽  
System A ◽  
Numerical Studies ◽  
Naturally Occurring

Metamaterials are engineered periodic structures designed to have unique properties not encountered in naturally occurring materials. One such unusual property of metamaterials is the ability to exhibit negative refractive index over a prescribed range of frequencies. A lens made of negative refractive index metamaterials can achieve resolution beyond the diffraction limit. This paper presents the design of a metamaterial lens and its use in far-field microwave imaging for subwavelength defect detection in nondestructive evaluation (NDE). Theoretical formulation and numerical studies of the metamaterial lens design are presented followed by experimental demonstration and characterization of metamaterial behavior. Finally, a microwave homodyne receiver-based system is used in conjunction with the metamaterial lens to develop a far-field microwave NDE sensor system. A subwavelength focal spot of size 0.82λ was obtained. The system is shown to be sensitive to a defect of size 0.17λ × 0.06λ in a Teflon sample. Consecutive positions of the defect with a separation of 0.23λ was resolvable using the proposed system.

POLYCYANURATE THIN FILM OPTICAL WAVEGUIDE FOR INTEGRATED OPTICS APPLICATIONS

2003 ◽  
Vol 12 (01) ◽  
pp. 1-5 ◽  
Author(s):  
SUDHIR KUMAR SHARMA ◽  
S. C. K. MISRA ◽  
K. N. TRIPATHI
Keyword(s):  
Refractive Index ◽  
Optical Waveguide ◽  
Optical Loss ◽  
Dip Coating ◽  
Optical Losses ◽  
Integrated Optical ◽  
Integrated Optical Devices ◽  
Fabrication And Characterization ◽  
Dip Coating Technique

This paper reports on the fabrication and characterization of polymer optical waveguide. The polymer films were used by dip coating technique. Various waveguide parameters such as refractive index, optical losses, thickness of guide has been reported. Polycyanurate synthesized as planar optical waveguide exhibits low optical loss (< 2 dB/cm) having refractive index 1.592 and excellent absorption spectra in the wavelength range (1540–1560 nm) which makes this polymer promising for integrated optical devices.

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