Optical configuration of modified Fredkin gate using lithium-niobate-based Mach–Zehnder interferometer

2020 ◽  
Vol 59 (23) ◽  
pp. 7083
Author(s):  
Shashank Awasthi ◽  
Aditya Biswas ◽  
Sanjeev Kumar Metya ◽  
Alak Majumder
Keyword(s):  
Lithium Niobate ◽  
Zehnder Interferometer ◽  
Fredkin Gate ◽  
Optical Configuration ◽  
Mach Zehnder Interferometer

scholarly journals Comparison of lithium niobate and silicon substrate on phase shift and efficiency performance for mach-zehnder interferometer modulator

2021 ◽  
Vol 22 (1) ◽  
pp. 352
Author(s):  
Nor Hidayah Roslan ◽  
Aziati H. Awang ◽  
Mohd Hanapiah M. Yusoff ◽  
Ahmad Rifqi Md Zain
Keyword(s):  
Phase Shift ◽  
Lithium Niobate ◽  
Power Consumption ◽  
Low Power ◽  
Slow Light ◽  
High Efficiency ◽  
Zehnder Interferometer ◽  
Good Time ◽  
Major Drawback ◽  
Mach Zehnder Interferometer

<span>In this study, the low-group velocity slow-light mach-zehnder interferometer (MZI) modulator, low loss and high efficiency for two modulator substrate lithium niobate (LN) and silicon were presented and optimized at 1.55µm operating wavelength. The high power consumption of conventional modulator was the major drawback in the operation of modulators. Therefore, it was a good time for low-power modulator design and development and to compare the LN and Silicon modulator on the phase shifted using the slow-light technique by designing the full MZI modulator consisting of splitter and combiner on both substrates. The phase shift of LN is 2% compared with the silicon 0.09% and higher phase shift give better performance with low power consumption due to the change of modulating voltage of the MZI modulator for LN while the silicon depends on modulating voltage manipulating concentration of charge carrier in doped silicon.</span>

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