scholarly journals Thermal tuning of graphene-embedded waveguide filters based on the polymer–silica hybrid structure

RSC Advances ◽  
2018 ◽  
Vol 8 (54) ◽  
pp. 30755-30760 ◽  
Author(s):  
Yue Cao ◽  
Baizhu Lin ◽  
Yue Sun ◽  
Xinchi Che ◽  
Yunji Yi ◽  
...  
Keyword(s):  
Relative Position ◽  
Graphene Layer ◽  
Hybrid Structure ◽  
Optical Field ◽  
Waveguide Filters ◽  
Hybrid Waveguide ◽  
Silica Hybrid ◽  
Thermal Tuning

We propose thermal tuning filters based on a graphene embedded polymer–silica hybrid waveguide. This device can realize the efficient adjustment of the relative position between the optical field and graphene layer by thermal tuning.

scholarly journals Low Power Consumption 3D-Inverted Ridge Thermal Optical Switch of Graphene-Coated Polymer/Silica Hybrid Waveguide

Micromachines ◽  
2020 ◽  
Vol 11 (8) ◽  
pp. 783
Author(s):  
Yue Cao ◽  
Yunji Yi ◽  
Yue Yang ◽  
Baizhu Lin ◽  
Jiawen Lv ◽  
...  
Keyword(s):  
Power Consumption ◽  
Low Power ◽  
Graphene Layer ◽  
Optical Switch ◽  
Graphene Film ◽  
Core Layer ◽  
Low Power Consumption ◽  
Electrode Structure ◽  
Hybrid Waveguide ◽  
Silica Hybrid

An inverted ridge 3D thermal optical (TO) switch of a graphene-coated polymer/silica hybrid waveguide is proposed. The side electrode structure is designed to reduce the mode loss induced by the graphene film and by heating the electrode. The graphene layer is designed to be located on the waveguide to assist in the conduction of heat produced by the electrode. The inverted ridge core is fabricated by etching and spin-coating processes, which can realize the flat surface waveguide. This core improves the transfer of the graphene layer and the compatibility of the fabrication processes. Because of the opposite thermal optical coefficient of polymer and silica and the high thermal conductivity of the graphene layer, the 3D hybrid TO switch with low power consumption and fast response time is obtained. Compared with the traditional TO switch without graphene film, the power consumption of the proposed TO switch is reduced by 41.43% at the wavelength of 1550 nm, width of the core layer (a) of 3 μm, and electrode distance (d) of 4 μm. The rise and fall times of the proposed TO switch are simulated to be 64.5 μs and 175 μs with a d of 4 μm, and a of 2 μm, respectively.

Response-time improvement of a 2×2 thermo-optic switch with polymer/silica hybrid waveguide

2012 ◽  
Vol 285 (18) ◽  
pp. 3758-3762 ◽  
Author(s):  
Yun-Fei Yan ◽  
Chuan-Tao Zheng ◽  
Lei Liang ◽  
Jie Meng ◽  
Xiao-Qiang Sun ◽  
...  
Keyword(s):  
Response Time ◽  
Hybrid Waveguide ◽  
Silica Hybrid

Polymer/silica hybrid waveguide Y-branch power splitter with loss compensation based on NaYF 4 :Er 3+ , Yb 3+ nanocrystals

2019 ◽  
Vol 28 (10) ◽  
pp. 104206
Author(s):  
Yue-Wu Fu ◽  
Tong-He Sun ◽  
Mei-Ling Zhang ◽  
Xu-Cheng Zhang ◽  
Fei Wang ◽  
...  
Keyword(s):  
Power Splitter ◽  
Loss Compensation ◽  
Hybrid Waveguide ◽  
Silica Hybrid

scholarly journals Facile Synthesis of Graphene from Waste Tire/Silica Hybrid Additives and Optimization Study for the Fabrication of Thermally Enhanced Cement Grouts

Molecules ◽  
2020 ◽  
Vol 25 (4) ◽  
pp. 886 ◽  
Author(s):  
Ilayda Berktas ◽  
Ali Nejad Ghafar ◽  
Patrick Fontana ◽  
Ayten Caputcu ◽  
Yusuf Menceloglu ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Silica Surface ◽  
Hybrid Structure ◽  
Functionalized Silica ◽  
Facile Synthesis ◽  
Waste Tire ◽  
Optimization Study ◽  
Thermal Enhancement ◽  
The Cost ◽  
Silica Hybrid

This work evaluates the effects of newly designed graphene/silica hybrid additives on the properties of cementitious grout. In the hybrid structure, graphene nanoplatelet (GNP) obtained from waste tire was used to improve the thermal conductivity and reduce the cost and environmental impacts by using recyclable sources. Additionally, functionalized silica nanoparticles were utilized to enhance the dispersion and solubility of carbon material and thus the hydrolyzable groups of silane coupling agent were attached to the silica surface. Then, the hybridization of GNP and functionalized silica was conducted to make proper bridges and develop hybrid structures by tailoring carbon/silica ratios. Afterwards, special grout formulations were studied by incorporating these hybrid additives at different loadings. As the amount of hybrid additive incorporated into grout suspension increased from 3 to 5 wt%, water uptake increased from 660 to 725 g resulting in the reduction of thermal conductivity by 20.6%. On the other hand, as the concentration of GNP in hybrid structure increased, water demand was reduced, and thus the enhancement in thermal conductivity was improved by approximately 29% at the same loading ratios of hybrids in the prepared grout mixes. Therefore, these developed hybrid additives showed noticeable potential as a thermal enhancement material in cement-based grouts.

Thermal field analysis of polymer/silica hybrid waveguide thermo-optic switch

2015 ◽  
Vol 356 ◽  
pp. 79-83 ◽  
Author(s):  
Yu-Fen Liu ◽  
Xi-Bin Wang ◽  
Jian Sun ◽  
Hong-Jun Gu ◽  
Xiao-Qiang Sun ◽  
...  
Keyword(s):  
Thermal Field ◽  
Field Analysis ◽  
Hybrid Waveguide ◽  
Silica Hybrid

The 650-nm variable optical attenuator based on polymer/silica hybrid waveguide

2016 ◽  
Vol 25 (5) ◽  
pp. 054101 ◽  
Author(s):  
Yue-Yang Yu ◽  
Xiao-Qiang Sun ◽  
Lan-Ting Ji ◽  
Guo-Bing He ◽  
Xi-Bin Wang ◽  
...  
Keyword(s):  
Variable Optical Attenuator ◽  
Hybrid Waveguide ◽  
Silica Hybrid

Polymer/silica hybrid waveguide temperature sensor based on asymmetric Mach–Zehnder interferometer

2018 ◽  
Vol 20 (4) ◽  
pp. 045803 ◽  
Author(s):  
Donghai Niu ◽  
Xibin Wang ◽  
Shiqi Sun ◽  
Minghui Jiang ◽  
Qiang Xu ◽  
...  
Keyword(s):  
Temperature Sensor ◽  
Zehnder Interferometer ◽  
Hybrid Waveguide ◽  
Silica Hybrid ◽  
Mach Zehnder Interferometer
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