Low Half-wave-voltage Thin Film LiNbO3 Electro-optic Modulator Based on a Compact Electrode Structure

2020 ◽  
Author(s):  
Xuecheng Liu ◽  
Bing Xiong ◽  
Changzheng Sun ◽  
Zhibiao Hao ◽  
Lai Wang ◽  
...  
Keyword(s):  
Thin Film ◽  
Electrode Structure ◽  
Half Wave Voltage ◽  
Half Wave ◽  
Electro Optic ◽  
Electro Optic Modulator

scholarly journals Design and Optimization of Proton Exchanged Integrated Electro-Optic Modulators in X-Cut Lithium Niobate Thin Film

Crystals ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 549 ◽  
Author(s):  
Huangpu Han ◽  
Bingxi Xiang ◽  
Tao Lin ◽  
Guangyue Chai ◽  
Shuangchen Ruan
Keyword(s):  
Thin Film ◽  
Lithium Niobate ◽  
Power Distribution ◽  
Optical Power ◽  
Single Mode ◽  
Design Parameters ◽  
Design And Optimization ◽  
Half Wave Voltage ◽  
Half Wave ◽  
Electro Optic

In this study, we designed, simulated, and optimized proton exchanged integrated Mach-Zehnder modulators in a 0.5-μm-thick x-cut lithium niobate thin film. The single-mode conditions, the mode distributions, and the optical power distribution of the lithium niobate channel waveguides are discussed and compared in this study. The design parameters of the Y-branch and the separation distances between the electrodes were optimized. The relationship between the half-wave voltage length production of the electro-optic modulators and the thickness of the proton exchanged region was studied.

Characterization of Bulk BaTiO3 Material for Optical Modulator Applications

2020 ◽  
Vol 1002 ◽  
pp. 132-139
Author(s):  
Sabah Al-Ithawi ◽  
Wasan A. Hekmat ◽  
Kadhim A. Hubeatir ◽  
Shams B. Ali ◽  
Suad M. Kadhim ◽  
...  
Keyword(s):  
Sample Size ◽  
Crystalline Structure ◽  
Figure Of Merit ◽  
Optical Modulator ◽  
Effective Parameters ◽  
Good Efficiency ◽  
Half Wave Voltage ◽  
Half Wave ◽  
Electro Optic

In this work, different sizes of BaTiO3 (BTO) were characterized. The effective parameters were studied to reach optimum performance in order to realize an optical modulator. The parameters such as spectroscopy, electro-optic coefficient, crystalline structure, and birefringence indicated that BaTiO3 has an excellent behavior to manipulate the light by Pockels modulator, spatially in the field of telecom. The sample size (10×3 mm) was shown a good performance compare with other samples, for example, the BTO has low absorption, high variation of output as a function of voltage applied and good efficiency that showed by figure of merit. In addition, a low half-wave voltage (Vπ) was observed.

Structure optimization of electro-optic polymer waveguides for low half-wave voltage modulators

2010 ◽  
Author(s):  
Hind Mahé ◽  
Dominique Bosc ◽  
Nicolas Gayet ◽  
Fabrice Odobel ◽  
Pierre-Antoinne Bonnardel ◽  
...  
Keyword(s):  
Structure Optimization ◽  
Polymer Waveguides ◽  
Half Wave Voltage ◽  
Half Wave ◽  
Electro Optic

scholarly journals Electro-Optic Intensity Modulation in Fe-Doped KTa0.65Nb0.35O3 Crystals

Crystals ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 870
Author(s):  
Cheng-Kai Yang ◽  
Xu-Ping Wang ◽  
Fei Zhang ◽  
Hua-Di Zhang ◽  
Bing Liu ◽  
...  
Keyword(s):  
Modulation Depth ◽  
Incident Light ◽  
Light Modulation ◽  
Light Power ◽  
Half Wave Voltage ◽  
Half Wave ◽  
Electro Optic ◽  
Ion Doping ◽  
Growth Method ◽  
Top Seeded Solution Growth

KTa0.65Nb0.35O3 and Fe-doped KTa0.65Nb0.35O3 crystals were grown by the top-seeded solution growth method (TSSG). Fe ion doping significantly improves the electro-optic properties of cubic KTN crystals. We describe their electro-optic modulation theory and experimental research. The electro-optic modulation waveform deduced by theoretical calculation is basically consistent with the waveform measured in the experiment. We observed the attenuation of light modulation under multiple voltage cycles. The modulation curve of the crystal is inconsistent when the crystal voltage is boosting and bucking. Under the same voltage condition, the higher the incident light power, the faster the modulation depth attenuation. In this experiment, the size of the KTN crystal chip is 6 mm × 5 mm × 2 mm. We obtain the effective electro-optic coefficient as s11 − s12 = 1.34 × 10−15 m2/V2; the half-wave voltage near the Curie temperature is 39 V.

Electro-Optic Polymer/TiO2 Slot Waveguide Modulators Driven with Low Half-Wave Voltage

2014 ◽  
Author(s):  
Y. Enami ◽  
Y. Jouane ◽  
D. Zhang ◽  
Y.C. Chang ◽  
J. Luo ◽  
...  
Keyword(s):  
Slot Waveguide ◽  
Half Wave Voltage ◽  
Half Wave ◽  
Electro Optic ◽  
Waveguide Modulators
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