A Low-Voltage Polarization-Independent Guided-Wave Direction-Coupler Switch In Lithium Niobate

1988 ◽  
Author(s):  
J. E. Watson
Keyword(s):  
Lithium Niobate ◽  
Low Voltage ◽  
Guided Wave ◽  
Wave Direction ◽  
Polarization Independent

scholarly journals Advanced Electrode Design for Low-Voltage High-Speed Thin-Film Lithium Niobate Modulators

2021 ◽  
Vol 13 (2) ◽  
pp. 1-9
Author(s):  
Xingrui Huang ◽  
Yang Liu ◽  
Zezheng Li ◽  
Huan Guan ◽  
Qingquan Wei ◽  
...  
Keyword(s):  
Thin Film ◽  
Lithium Niobate ◽  
High Speed ◽  
Low Voltage ◽  
Electrode Design

Detection of Defects in Titanium Using Shear Horizontal Guided Waves

2021 ◽  
Author(s):  
Christian Peyton ◽  
Rachel S. Edwards ◽  
Steve Dixon ◽  
Ben Dutton ◽  
Wilson Vesga
Keyword(s):  
Guided Waves ◽  
Wave Mode ◽  
Guided Wave ◽  
Inspection System ◽  
Wave Direction ◽  
Finite Element Software ◽  
Small Defect ◽  
Back Face ◽  
The Relationship ◽  
Shear Horizontal

Abstract This paper investigates the interaction behaviour between the fundamental shear horizontal guided wave mode and small defects, in order to understand and develop an improved inspection system for titanium samples. In this work, an extensive range of defect sizes have been simulated using finite element software. The SH0 reflection from a defect has been shown previously to depend on its length as the total reflection consists of reflections from both the front and back face. However, for small defect widths, this work has found that the width also affects this interference, changing the length at which the reflection is largest. In addition, the paper looks at how the size of the defect affects the mode converted S0 reflection and SH0 diffraction. The relationship between the SH0 diffraction and defect size is shown to be more complex compared to the reflections. The mode converted S0 reflection occurs at an angle to the incident wave direction; therefore, the most suitable angle for the detection has been found. Simultaneous measurement of multiple waves would bring benefits to inspection.

Lithium niobate guided-wave beam former for steering phased-array antennas

1994 ◽  
Vol 33 (26) ◽  
pp. 6194 ◽  
Author(s):  
Mario N. Armenise ◽  
Vittorio M. N. Passaro ◽  
Giuseppe Noviello
Keyword(s):  
Lithium Niobate ◽  
Phased Array ◽  
Wave Beam ◽  
Guided Wave ◽  
Phased Array Antennas ◽  
Array Antennas
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