Design and fabrication of three-dimensional polymer mode multiplexer based on asymmetric waveguide couplers

He, Gang; Gao, Yang; Xu, Yan; Ji, Lanting; Sun, Xiaoqiang; Wang, Xibin; Yi, Yunji; Chen, Changming; Wang, Fei; Zhang, Daming; Wu, Yingliang

doi:10.1088/2040-8986/aab6e5

Cited by 12 publications

(4 citation statements)

References 44 publications

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“…Therefore, the width of the waveguide was 1.5 µm and the thickness was 3 µm. Most mode converters use long-period waveguide gratings or vertical directional coupling structures [24,25]. In this paper, a vertical asymmetric MZI structure was designed to be compatible with the switch fabrication process [22].…”

Section: Mode Convertermentioning

confidence: 99%

Graphene-Assisted Polymer Waveguide Optically Controlled Switch Using First-Order Mode

Yang

Lin

et al. 2021

Polymers

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All-optical devices have a great potential in optical communication systems. As a new material, graphene has attracted great attention in the field of optics due to its unique properties. We propose a graphene-assisted polymer optically controlled thermo-optic switch, based on the Ex01 mode, which can reduce the absorption loss of graphene. Graphene absorbs 980 nm pump light, and uses the heat generated by ohmic heating to switch on and off the signal light at 1550 nm. The simulation results show that, when the graphene is in the right position, we can obtain the power consumption of 9.5 mW, the propagation loss of 0.01 dB/cm, and the switching time of 127 μs (rise)/125 μs (fall). The switching time can be improved to 106 μs (rise) and 102 μs (fall) with silicon substrate. Compared with an all-fiber switch, our model has lower power consumption and lower propagation loss. The proposed switch is suitable for optically controlled fields with low loss and full polarization. Due to the low cost and easy integration of polymer materials, the device will play an important role in the fields of all-optical signal processing and silicon-based hybrid integrated photonic devices.

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Section: Mode Convertermentioning

confidence: 99%

Graphene-Assisted Polymer Waveguide Optically Controlled Switch Using First-Order Mode

Yang

Lin

et al. 2021

Polymers

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“…On the other hand, the MDM technologies have also been demonstrated in integrated silicon photonics, where the selective mode couplings are realized relied on the phase matching condition [50]. These on-chip mode (de)multiplexers typically have large footprints, for instance, the directional couplers based on the polymer waveguides have the coupling length of several millimeters [51,52]. Therefore, a highly compact mode (de)multiplexer specifically designed for 3D PICs is highly desired.…”

Section: Vertical Mode (De)multiplexermentioning

confidence: 99%

Light manipulation in three-dimensional photonic integrated circuits using vertically inserted metasurfaces

Wu¹,

Zhang²

2021

Phys. Scr.

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The hybrid integration of silicon metasurfaces, in forms of insertable thin-film elements, into a multilayer polymer waveguide platform is introduced. Owing to the wavelength comparable thickness and high efficiency of the dielectric metasurfaces, the designed devices can manipulate beams in a relatively short distance with low insertion loss. They can also realize functions critical for three-dimensional (3D) photonic integrated circuits (PICs) that are difficult for conventional micro-optic elements. The designs of several key photonic components are presented in this work as proof-of-concept. Specifically, three applications based on the proposed platform are demonstrated numerically, including on-chip beam collimation, spatial mode (de)multiplexing, and focusing vertical out-coupling. These functionalities can be realized within a short propagating length. This work presents a theoretical study on the design principles and performances of the proposed devices, which can be implemented by adopting the existed technology of inserting classic thin-film elements into photonic chips in the near future. The results suggest a novel and general path for optical signal manipulations within the 3D photonic chips and may prove useful in the design of transceiver devices for optical communication, optical sensor chips, compact chips for optical computation, etc.

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“…Epoxy (EPO) polymer is a commonly used permanent epoxy negative photoresist. After ultraviolet (UV) exposure, its chemical stability and corrosion resistance are greatly improved due to the cross-linking solidification reaction [36]. The EPO clad and EPO core are used as the cladding layer and the waveguide core, respectively.…”

Section: Structure and Principlementioning

confidence: 99%

“…Because SPP waves are transverse magnetic (TM) polarized, only TM modes are considered in the following calculations. The RIs of the EPO clad, EPO core, PMMA are assumed to be n c = 1.568, n o = 1.575, and n b = 1.495, respectively [36].…”

Section: Simulationsmentioning

confidence: 99%

Polymer Waveguide Coupled Surface Plasmon Refractive Index Sensor: A Theoretical Study

Yang

Shi

et al. 2020

Photonic Sens

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A waveguide coupled surface plasmon sensor for detection of liquid with high refractive index (RI) is designed based on polymer materials. The effects of variation of the thickness of the Au film, polymethyl methacrylate (PMMA) buffer, and waveguide layer on the sensing performance of the waveguide are comprehensively investigated by using the finite difference method. Numerical simulations show that a thinner gold film gives rise to a more sensitive structure, while the variation of the thickness of the PMMA buffer and waveguide layer has a little effect on the sensitivity. For liquid with high RI, the sensitivity of the sensor increases significantly. When RI of liquid to be measured increases from 1.45 to 1.52, the sensitivity is as high as 4518.14nm/RIU, and a high figure of merit of 114.07 is obtained. The waveguide coupled surface plasmon RI sensor shows potential applications in the fields of environment, industry, and agriculture sensing with the merits of compact size, low cost, and high integration density.

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Design and fabrication of three-dimensional polymer mode multiplexer based on asymmetric waveguide couplers

Cited by 12 publications

References 44 publications

Graphene-Assisted Polymer Waveguide Optically Controlled Switch Using First-Order Mode

Graphene-Assisted Polymer Waveguide Optically Controlled Switch Using First-Order Mode

Light manipulation in three-dimensional photonic integrated circuits using vertically inserted metasurfaces

Polymer Waveguide Coupled Surface Plasmon Refractive Index Sensor: A Theoretical Study

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