Metamaterial‐enabled Fully On‐Chip Polarization‐Handling Devices

Zhao, Yaotian; Xiang, Jinlong; He, An; He, Yu; Guo, Xuhan; Su, Yikai

doi:10.1002/lpor.202300320

Cited by 8 publications

(1 citation statement)

References 54 publications

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“…They have exhibited remarkable capabilities of manipulating light, typically its phase and polarization properties, − with surface-confined structures and subwavelength spatial resolutions. These unique properties of metasurfaces have been used to demonstrate a variety of devices and novel physical phenomena, such as meta-lenses, , holography, invisible cloaks, optical spin hall effect, polarization converters, polarizers, and polarization-manipulating waveplates, − Among the polarization control applications related to plasmonic metasurfaces, there has been a rapid rise in the designs of broadband reflective waveplates with high polarization conversion ratios and a wide field of view compared to conventional birefringent materials . These high polarization conversion efficiencies (PCEs) can support the development of polarization management building blocks such as polarization rotators (PR) and splitters.…”

Section: Introductionmentioning

confidence: 99%

On-Chip Polarization Rotators Using Metasurface

Shahwar,

Kapulainen,

Haatainen

et al. 2024

ACS Omega

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Metasurfaces, with their ability to finely manipulate light properties (e.g., polarization), represent a frontier in optical technology. Here, we report innovative gold-based metasurfaces that are adept at changing the light polarization across a broad range of incident angles. Their expansive acceptance angle facilitates seamless integration with silicon waveguides, culminating in the realization of a novel, compact, broadband, and low-loss on-chip polarization rotator. The demonstrated metasurface devices show polarization conversion efficiencies as high as 98.5% at 1550 nm in the free space measurements. Unlike conventional plasmonic metasurfaces, which lack broadband capabilities, our metasurface-based waveplates show extinction ratios of >15 dB for a 120 nm bandwidth. These metasurfaces are positioned on top of up-reflecting mirrors fabricated in a micrometer-scale silicon-on-insulator platform to demonstrate on-chip polarization rotation. The demonstrated polarization rotator shows an extinction ratio of more than 10 dB for a 100 nm bandwidth. This study marks the first successful demonstration of on-chip polarization manipulation utilizing metasurface integration, heralding significant potential impacts for enhancing the functionality and miniaturization of photonic integrated circuits.

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Section: Introductionmentioning

confidence: 99%

On-Chip Polarization Rotators Using Metasurface

Shahwar,

Kapulainen,

Haatainen

et al. 2024

ACS Omega

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Photonic Metamaterial‐Inspired Polarization Manipulating Devices on Etchless Thin Film Lithium Niobate Platform

Liao,

Chen,

Zhou

et al. 2024

Laser & Photonics Reviews

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Photonic metamaterials interact with light at the micro–nano scale, enabling unprecedented optical manipulation capabilities, which play a key role in nonlinear optics, spin optics, negative index, and zero index materials. Recently, thin‐film lithium niobate on insulator (LNOI) has emerged as a promising platform for integrated photonics due to its unique material properties, including an excellent electro–optic effect, wide transparency window, and low waveguide losses. Metamaterial structures are promising for constructing novel integrated photonic circuit building blocks on LNOI as they can provide advantageous circuit functionality. In this work, as a proof of concept, high‐performance polarization manipulating devices including polarization splitter rotator (PSR), polarization rotator (PR), and polarizer are demonstrated using photonic metamaterials on the etchless LNOI platform by introducing a silicon nitride layer on the top of LNOI wafer as the loading material. In this way, full advantage of lithium niobate (LN) can be taken to achieve various high‐performance integrated photonic devices, while avoiding the etching of LN and simplifying the fabrication process greatly, which can bring bright prospects for achieving large‐scale lithium niobate integrated photonic circuits.

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Integrated Arbitrary Multimode TM‐Pass Polarizer Based on Anisotropic Optical Manipulation

Zhou,

Chen,

Liao

et al. 2024

Laser & Photonics Reviews

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On‐chip optical polarizer can extract the desired polarized light signal while filtering out the other polarized light signal, which plays a key role in integrated photonic circuits for purifying the desired polarized signal and reducing polarization crosstalk. However, most of the reported optical polarizers can only work for fundamental modes. With the rapid development of on‐chip multimode processing systems, arbitrary high‐order mode optical polarizers are more desirable. In this contribution, a TM‐pass optical multimode polarizer is proposed and demonstrated using subwavelength grating‐based anisotropic manipulation, which can achieve the polarizing of arbitrary TM high‐order mode theoretically, and the experimental results show the lowest polarization extinction ratio of the fabricated device can reach up to 21.2 dB under working for four‐mode (TM0, TM1, TM2, and TM3) system. The dynamic data transmission with the data rate of 64 Gbit s−1 has also been demonstrated to verify its potential for systematized applications in the future.

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Metamaterial‐enabled Fully On‐Chip Polarization‐Handling Devices

Cited by 8 publications

References 54 publications

On-Chip Polarization Rotators Using Metasurface

On-Chip Polarization Rotators Using Metasurface

Photonic Metamaterial‐Inspired Polarization Manipulating Devices on Etchless Thin Film Lithium Niobate Platform

Integrated Arbitrary Multimode TM‐Pass Polarizer Based on Anisotropic Optical Manipulation

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