Numerical analysis and simulation optimization design of coplanar waveguide in electro-optic sampling system

Author(s):  
Jialin Chen ◽  
Liqiang Zhao ◽  
Jianwei Li ◽  
Chi Chen ◽  
Qiming Fan
2012 ◽  
Vol 220-223 ◽  
pp. 884-890
Author(s):  
Qiu Hong Song ◽  
Yong Mei Ma ◽  
Shou Qi Cao ◽  
Chao Lv ◽  
Jun Li

Plane four-bar linkage is widely used in mechanical products; it is a decisive factor to define the characteristics and output of crusher as the key mechanism for the model crusher. At first, expound and classify the critical parameter in theory; then ADAMS is used in parameterized modeling of plane four-bar linkage, according to the simulation optimization data of critical parameter in ADAMS, the relations among the critical parameter and influence on crusher performance are demonstrated after numerical analysis. Finally, the optimal critical values are optimized, which are applied into the design of a crusher.


2003 ◽  
Vol 82 (15) ◽  
pp. 2383-2385 ◽  
Author(s):  
X. Zheng ◽  
S. Wu ◽  
Roman Sobolewski ◽  
R. Adam ◽  
M. Mikulics ◽  
...  

2008 ◽  
Vol 92 (13) ◽  
pp. 131103 ◽  
Author(s):  
L. Meignien ◽  
J. Mangeney ◽  
P. Crozat ◽  
L. Duvillaret ◽  
M. Hanna

2018 ◽  
Vol 40 ◽  
pp. 165-171 ◽  
Author(s):  
Li Wang ◽  
Jun Wang ◽  
Dong Bao ◽  
Rong Yang ◽  
Qing Yan ◽  
...  

Author(s):  
T. Nagatsuma ◽  
T. Shibata ◽  
E. Sano ◽  
A. Iwata

2013 ◽  
Vol 27 (04) ◽  
pp. 1350024 ◽  
Author(s):  
XIBIN WANG ◽  
JIAN SUN ◽  
LIN JIN ◽  
JIE MENG ◽  
YUNFEI YAN ◽  
...  

Polymeric Disperse Red 1 (DR1)/SU-8 electro-optic (EO) switch incorporating inverted-rib waveguide structure is designed and fabricated by all-wet etching process. The guest-host EO material DR1/SU-8 has been successfully synthetized and its optical properties are characterized in detail. The DR1/SU-8 material presents a low processing cost, an excellent photostability and a large EO coefficient of 15.4 pm/V. The characteristic parameters of both the inverted-rib waveguide and the coplanar waveguide electrodes are carefully designed and simulated. By all-wet etching process, the optimized Mach–Zehnder interferometer switch is successfully fabricated with a lower fiber-to-fiber insertion loss of 9.6 dB. The switch rise time and fall time are 322 ns and 294 ns, respectively.


2022 ◽  
Vol 11 (1) ◽  
Author(s):  
Eléonore Roussel ◽  
Christophe Szwaj ◽  
Clément Evain ◽  
Bernd Steffen ◽  
Christopher Gerth ◽  
...  

AbstractRecording electric field evolution in single-shot with THz bandwidth is needed in science including spectroscopy, plasmas, biology, chemistry, Free-Electron Lasers, accelerators, and material inspection. However, the potential application range depends on the possibility to achieve sub-picosecond resolution over a long time window, which is a largely open problem for single-shot techniques. To solve this problem, we present a new conceptual approach for the so-called spectral decoding technique, where a chirped laser pulse interacts with a THz signal in a Pockels crystal, and is analyzed using a grating optical spectrum analyzer. By borrowing mathematical concepts from photonic time stretch theory and radio-frequency communication, we deduce a novel dual-output electro-optic sampling system, for which the input THz signal can be numerically retrieved—with unprecedented resolution—using the so-called phase diversity technique. We show numerically and experimentally that this approach enables the recording of THz waveforms in single-shot over much longer durations and/or higher bandwidth than previous spectral decoding techniques. We present and test the proposed DEOS (Diversity Electro-Optic Sampling) design for recording 1.5 THz bandwidth THz pulses, over 20 ps duration, in single-shot. Then we demonstrate the potential of DEOS in accelerator physics by recording, in two successive shots, the shape of 200 fs RMS relativistic electron bunches at European X-FEL, over 10 ps recording windows. The designs presented here can be used directly for accelerator diagnostics, characterization of THz sources, and single-shot Time-Domain Spectroscopy.


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