Extremely low power consumption thermooptic switch (0.6 mW) with suspended ridge and silicon-silica hybrid waveguide structures

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.

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Dispersed-Monolayer Graphene-Doped Polymer/Silica Hybrid Mach-Zehnder interferometer (MZI) Thermal Optical Switch with Low-Power Consumption and Fast Response

Polymers ◽

10.3390/polym11111898 ◽

2019 ◽

Vol 11 (11) ◽

pp. 1898 ◽

Cited By ~ 3

Author(s):

Yue Cao ◽

Daming Zhang ◽

Yue Yang ◽

Baizhu Lin ◽

Jiawen Lv ◽

...

Keyword(s):

Thermal Conductivity ◽

Power Consumption ◽

Low Power ◽

Optical Switch ◽

Fast Response ◽

Zehnder Interferometer ◽

Low Power Consumption ◽

Monolayer Graphene ◽

Doped Polymer ◽

Silica Hybrid

This article demonstrates a dispersed-monolayer graphene-doped polymer/silica hybrid Mach–Zehnder interferometer (MZI) thermal optical switch with low-power consumption and fast response. The polymer/silica hybrid MZI structure reduces the power consumption of the device as a result of the large thermal optical coefficient of the polymer material. To further decrease the response time of the thermal optical switch device, a polymethyl methacrylate, doped with monolayer graphene as a cladding material, has been synthesized. Our study theoretically analyzed the thermal conductivity of composites using the Lewis–Nielsen model. The predicted thermal conductivity of the composites increased by 133.16% at a graphene volume fraction of 0.263 vol %, due to the large thermal conductivity of graphene. Measurements taken of the fabricated thermal optical switch exhibited a power consumption of 7.68 mW, a rise time of 40 μs, and a fall time of 80 μs at a wavelength of 1550 nm.

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Driving-Noise-Tolerant Broadband Polymer/Silica Hybrid Thermo-Optic Switch with Low Power Consumption

Fiber & Integrated Optics ◽

10.1080/01468030.2012.727131 ◽

2012 ◽

Vol 31 (5) ◽

pp. 299-315 ◽

Cited By ~ 3

Author(s):

Lei Liang ◽

Chuan-Tao Zheng ◽

Xiao-Qiang Sun ◽

Fei Wang ◽

Chun-Sheng Ma ◽

...

Keyword(s):

Power Consumption ◽

Low Power ◽

Low Power Consumption ◽

Noise Tolerant ◽

Silica Hybrid

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1.3 μm 28 Gb/s EMLs with Hybrid Waveguide Structure for Low-Power-Consumption CFP2 Transceivers

Optical Fiber Communication Conference/National Fiber Optic Engineers Conference 2013 ◽

10.1364/ofc.2013.oth4h.5 ◽

2013 ◽

Cited By ~ 1

Author(s):

Yoshimichi Morita ◽

Takeshi Yamatoya ◽

Yohei Hokama ◽

Koichi Akiyama ◽

Ryoko Makita ◽

...

Keyword(s):

Power Consumption ◽

Low Power ◽

Waveguide Structure ◽

Low Power Consumption ◽

Hybrid Waveguide

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Optimal design of a high homogeneous and small-size shim coil for atomic spin gyroscope based on 0-1 linear programming

International Journal of Applied Electromagnetics and Mechanics ◽

10.3233/jae-209319 ◽

2020 ◽

Vol 64 (1-4) ◽

pp. 165-172

Author(s):

Dongge Deng ◽

Mingzhi Zhu ◽

Qiang Shu ◽

Baoxu Wang ◽

Fei Yang

Keyword(s):

Linear Programming ◽

Power Consumption ◽

Low Power ◽

Optimization Design ◽

Structural Parameters ◽

Axial Position ◽

Low Power Consumption ◽

Optimal Method ◽

Atomic Spin ◽

Shim Coil

It is necessary to develop a high homogeneous, low power consumption, high frequency and small-size shim coil for high precision and low-cost atomic spin gyroscope (ASG). To provide the shim coil, a multi-objective optimization design method is proposed. All structural parameters including the wire diameter are optimized. In addition to the homogeneity, the size of optimized coil, especially the axial position and winding number, is restricted to develop the small-size shim coil with low power consumption. The 0-1 linear programming is adopted in the optimal model to conveniently describe winding distributions. The branch and bound algorithm is used to solve this model. Theoretical optimization results show that the homogeneity of the optimized shim coil is several orders of magnitudes better than the same-size solenoid. A simulation experiment is also conducted. Experimental results show that optimization results are verified, and power consumption of the optimized coil is about half of the solenoid when providing the same uniform magnetic field. This indicates that the proposed optimal method is feasible to develop shim coil for ASG.

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