FABRICATION OF A POLYMER-ON-SILICA HYBRID THERMO-OPTIC SWITCH WITH FAST RESPONSE TIME AND LOW POWER CONSUMPTION

A polymer-on-silica Mach–Zehnder interferometer (MZI) TO switch is experimentally demonstrated using core polymer material with large thermo-optic (TO) coefficient. In the hybrid structure, the negative photoresist SU-8 and silica are used as core and lower cladding, respectively. Wet-etching technique is adopted to optimize fabrication process and diminish sidewall roughness and scattering loss. Compared to our two previously reported works, this switch exhibits better performance with lower power consumption of less than 4.8 mW, higher extinction ratio of 22.5 dB, shorter rise time of 141 μs and fall time of 87 μs, due to the larger thermal conductivity of silica relative to polymer in the proposed hybrid configuration.

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Compositional Tuning of Negative Differential Resistance in Bulk Silver Iodide Memristor

New Journal of Chemistry ◽

10.1039/d0nj05427e ◽

2020 ◽

Author(s):

SMITA GAJANAN NAIK ◽

Mohammad Hussain Kasim Rabinal

Keyword(s):

Power Consumption ◽

Negative Differential Resistance ◽

Silver Iodide ◽

Differential Resistance ◽

Fast Response ◽

Low Power Consumption ◽

Switching Effect ◽

Memory Switching ◽

Bulk Silver ◽

Emerging Memory

Electrical memory switching effect has received a great interest to develop emerging memory technology such as memristors. The high density, fast response, multi-bit storage and low power consumption are their...

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Fast response thermal linear motor with reduced power consumption

Procedia Chemistry ◽

10.1016/j.proche.2009.07.172 ◽

2009 ◽

Vol 1 (1) ◽

pp. 690-693 ◽

Cited By ~ 2

Author(s):

S.L. Paalvast ◽

H.T.M. Pham ◽

P.M. Sarrob ◽

R.H. Munnig Schmidt

Keyword(s):

Power Consumption ◽

Fast Response ◽

Linear Motor ◽

Reduced Power Consumption

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Estimation of Scattering Loss Due to Sidewall Roughness in High Power Laser Diodes

Springer Proceedings in Physics - The Physics of Semiconductor Devices ◽

10.1007/978-3-319-97604-4_146 ◽

2019 ◽

pp. 963-966

Author(s):

Deepti Jain ◽

Somna Mahajan ◽

Alok Jain ◽

Manjeet Singh ◽

Shabbir Mohammed

Keyword(s):

High Power ◽

Laser Diodes ◽

High Power Laser ◽

Power Laser ◽

Sidewall Roughness ◽

Scattering Loss

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Single-Mode Tapered Vertical SU-8 Waveguide Fabricated by E-Beam Lithography for Analyte Sensing

Sensors ◽

10.3390/s19153383 ◽

2019 ◽

Vol 19 (15) ◽

pp. 3383 ◽

Cited By ~ 1

Author(s):

Yu Xin ◽

Gregory Pandraud ◽

Yongmeng Zhang ◽

Paddy French

Keyword(s):

Transmission Loss ◽

Coupling Efficiency ◽

Single Mode ◽

Optical Measurements ◽

Direct Writing ◽

Sidewall Roughness ◽

Scattering Loss ◽

Waveguide Loss ◽

One Step ◽

Saline Solutions

In this paper, we propose a novel vertical SU-8 waveguide for evanescent analyte sensing. The waveguide is designed to possess a vertical and narrow structure to generate evanescent waves on both sides of the waveguide’s surface, aimed at increasing the sensitivity by enlarging the sensing areas. We performed simulations to monitor the influence of different parameters on the waveguide’s performance, including its height and width. E-beam lithography was used to fabricate the structure, as this one-step direct writing process enables easy, fast, and high-resolution fabrication. Furthermore, it reduces the sidewall roughness and decreases the induced scattering loss, which is a major source of waveguide loss. Couplers were added to improve the coupling efficiency and alignment tolerance, and will contribute to the feasibility of a plug-and-play optical system. Optical measurements show that the transmission loss is 1.03 ± 0.19 dB/cm. The absorption sensitivity was measured to be 4.8 dB per refractive index unit (dB/RIU) for saline solutions with various concentrations.

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Low power consumption and fast response H2S gas sensor based on a chitosan-CuO hybrid nanocomposite thin film

Carbohydrate Polymers ◽

10.1016/j.carbpol.2020.116064 ◽

2020 ◽

Vol 236 ◽

pp. 116064 ◽

Cited By ~ 5

Author(s):

Fajr I.M. Ali ◽

Saleh T. Mahmoud ◽

Falah Awwad ◽

Yaser E. Greish ◽

Ayah F.S. Abu-Hani

Keyword(s):

Thin Film ◽

Power Consumption ◽

Low Power ◽

Gas Sensor ◽

Fast Response ◽

Low Power Consumption ◽

Hybrid Nanocomposite ◽

Nanocomposite Thin Film ◽

H2s Gas Sensor

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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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