Low half-wave voltage Y-branch electro-optic polymer modulator based on side-chain polyurethane-imide

2016 ◽  
Vol 30 (17) ◽  
pp. 1650228 ◽  
Author(s):  
Jie Tang ◽  
Long-De Wang ◽  
Ruo-Zhou Li ◽  
Qiang Zhang ◽  
Tong Zhang
Keyword(s):  
High Performance ◽  
Low Cost ◽  
Core Layer ◽  
Optical Systems ◽  
Side Chain ◽  
Driving Voltage ◽  
Half Wave Voltage ◽  
Half Wave ◽  
Electro Optic ◽  
Potential Applications

A Y-branch electro-optic (EO) polymer modulator has been designed and fabricated. High performance side-chain polyurethane-imide (PUI) with a high EO coefficient of larger than 50 pm/V and a moderate glass-transition temperature [Formula: see text] of 206[Formula: see text]C is used as EO polymer core layer of the modulator. The fabricated phase modulator exhibits a low half-wave voltage of 1.94 V at 1550 nm in single arm modulation with 1 cm EO interaction length and 2 cm total length. The results show that the modulator fabricated by side-chain PUI EO materials possesses potential applications in low driving voltage and low cost optical systems.

Advances in preparation, modification, and application of polypropylene membrane

2016 ◽  
Vol 36 (4) ◽  
pp. 329-362 ◽  
Author(s):  
Nurul F. Himma ◽  
Sofiatun Anisah ◽  
Nicholaus Prasetya ◽  
I Gede Wenten
Keyword(s):  
Thermal Stability ◽  
High Performance ◽  
Chemical Resistance ◽  
Low Cost ◽  
Comprehensive Overview ◽  
Preparation Methods ◽  
Good Thermal Stability ◽  
Polypropylene Membrane ◽  
Membrane Fabrication ◽  
Potential Applications

Abstract Polypropylene (PP) is one of the most used polymers for microporous membrane fabrication due to its good thermal stability, chemical resistance, mechanical strength, and low cost. There have been numerous studies reporting the developments and applications of PP membranes. However, PP membrane with high performance is still a challenge. Thus, this article presents a comprehensive overview of the advances in the preparation, modification and application of PP membrane. The preparation methods of PP membrane are firstly reviewed, followed by the modification approaches of PP membrane. The modifications includes hydrophilic and superhydrophobic modification so that the PP membranes become more suitable to be applied either in aqueous applications or in non-aqueous ones. The fouling resistant of hydrophilized PP membrane and the wetting resistant of superhydrophobized PP membrane are then reviewed. Finally, special attention is given to the various potential applications and industrial outlook of the PP membranes.

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 High-Efficiency All-Dielectric Metasurfaces for the Generation and Detection of Focused Optical Vortex for the Ultraviolet Domain

2020 ◽  
Vol 10 (16) ◽  
pp. 5716
Author(s):  
Ziheng Zhang ◽  
Tong Li ◽  
Xiaofei Jiao ◽  
Guofeng Song ◽  
Yun Xu
Keyword(s):  
High Performance ◽  
High Efficiency ◽  
Dielectric Material ◽  
Optical Vortex ◽  
Magnetic Dipoles ◽  
Half Wave ◽  
Potential Applications ◽  
On Chip ◽  
High Flexibility ◽  
Meta Atom

The optical vortex (OV) has drawn considerable attention owing to its tremendous advanced applications, such as optical communication, quantum entanglement, and on-chip detectors. However, traditional OV generators suffer from a bulky configuration and limited performance, especially in the ultraviolet range. In this paper, we utilize a large bandgap dielectric material, niobium pentoxide (Nb2O5), to construct ultra-thin and compact transmission-type metasurfaces to generate and detect the OV at a wavelength of 355 nm. The meta-atom, which operates as a miniature half-wave plate and demonstrates a large tolerance to fabrication error, manipulates the phase of an incident right-handed circular polarized wave with high cross-polarized conversion efficiency (around 86.9%). The phase delay of π between the orthogonal electric field component is attributed to the anti-parallel magnetic dipoles induced in the nanobar. Besides, focused vortex generation (topological charge l from 1 to 3) and multichannel detection (l from −2 to 2) are demonstrated with high efficiency, up to 79.2%. We envision that our devices of high flexibility may have potential applications in high-performance micron-scale integrated ultraviolet nanophotonics and meta-optics.

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

scholarly journals DESIGN DETAILS OF A LOW COST AND HIGH PERFORMANCE ROBOTIC VISION ARCHITECTURE

2015 ◽  
pp. 141-156
Author(s):  
John V. Vourvoulakis ◽  
John A. Kalomiros ◽  
John N. Lygouras
Keyword(s):  
Video Processing ◽  
High Performance ◽  
Low Cost ◽  
Basic Feature ◽  
Full Detail ◽  
Robotic Vision ◽  
Multiple Camera ◽  
Video Frames ◽  
Potential Applications ◽  
Video Input

The implementation of an advanced real-time, low cost video processing platform capable of supporting a variety of demanding robotic applications is presented. The system is designed as an open project, accessible in full detail and has the potential to grow. It is based on a FPGA plus MCU architecture, allowing the implementation of combined fixed-point and 32-bit floating-point applications with optimized resource allocation. The presented platform is optimally integrated with appropriate controllers, like video-input frame grabbers for multiple camera applications, external SDRAM, as well as USB and VGA interfaces. The processing and interfacing capabilities of the proposed system are illustrated by implementing basic feature extraction and preprocessing tasks, achieving the display of processed video frames at a rate of 30 fps with resolution 640x480. The proposed architecture is evaluated in terms of resource usage, power consumption and cost. Potential applications are also discussed.

Erratum: “Low half-wave voltage and high electro-optic effect in hybrid polymer/sol-gel waveguide modulators” [Appl. Phys. Lett. 89, 143506 (2006)]

2007 ◽  
Vol 91 (1) ◽  
pp. 019901 ◽  
Author(s):  
Y. Enami ◽  
C. T. DeRose ◽  
C. Loychik ◽  
D. Mathine ◽  
R. A. Norwood ◽  
...  
Keyword(s):  
Sol Gel ◽  
Hybrid Polymer ◽  
Half Wave Voltage ◽  
Half Wave ◽  
Electro Optic ◽  
Waveguide Modulators
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