Fabrication of wire grid polarizer for spectroscopy application: From ultraviolet to terahertz

Cho, Young Tae

doi:10.1080/05704928.2017.1328427

Cited by 18 publications

(7 citation statements)

References 131 publications

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“…The use of optical polarizers for imaging and display includes applications such as glasses, liquid crystal display, and photography [5,6], where optical polarizers help reduce glare, enhance contrast, and improve the color reproduction in displays, contributing significantly to image quality and visibility. For optical analysis such as spectroscopy, biomedical measurements, and materials analysis [7,8], optical polarizers have been employed in various analytical techniques to extract valuable information from measured optical signals. In optical communication systems, optical polarizers have been widely used for implementing laser systems, reducing polarization-mode dispersion, and realizing polarization-division multiplexing [9,10], thereby maintaining signal integrity and achieving efficient data transmission.…”

Section: Introductionmentioning

confidence: 99%

Integrated optical polarizers employing 2D materials

Moss

2024

Preprint

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Optical polarizers are essential components for the selection and manipulation of light polarization states in optical systems. Over the past decade, the rapid advancement of photonic technologies and devices has led to the development of a range of novel optical polarizers, opening avenues for many breakthroughs and expanding applications across diverse fields. Particularly, two-dimensional (2D) materials, known for their atomic thin film structures and unique optical properties, have become attractive for implementing optical polarizers with high performance and new features that were not achievable before. This paper reviews recent progress in 2D-material-based optical polarizers. First, an overview of key properties of various 2D materials for realizing optical polarizers is provided. Next, the state-of-the-art optical polarizers based on 2D materials, which are categorized into spatial-light devices, fiber devices, and integrated waveguide devices, are reviewed and compared. Finally, we discuss the current challenges of this field as well as the exciting opportunities for future technological advances.

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Section: Introductionmentioning

confidence: 99%

Integrated optical polarizers employing 2D materials

Moss

2024

Preprint

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“…For the free-standing wire grid polarizers, although the free-standing wire grid polarizers have a high THz transmittance, it is expensive to fabricate them and they are mechanically fragile. Conversely, the wire grid polarizers based on a dielectric substrate can be easily and cheaply fabricated by the photolithography techniques [19]. The dielectric substrates used in the wire grid polarizers include rigid materials and flexible materials.…”

Section: Introductionmentioning

confidence: 99%

Ultrathin, highly flexible and optically transparent terahertz polarizer based on transparent conducting oxide

Lai¹,

Yuan²,

Fang³

et al. 2020

J. Phys. D: Appl. Phys.

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Multifunctional terahertz devices hold great promise for terahertz (THz) optical systems. Here, we present an ultrathin, highly flexible and optically transparent terahertz polarizer based on tin-doped indium oxide (ITO) and flexible conformal films of polyethylene terephthalate. The flexible optical transparent polarizer (FOTP) was theoretically investigated and experimentally characterized by UV–vis spectrophotometry and THz time-domain system. In the FOTP, THz conductivity of ITO films is mainly dominated by DC conductivity. The FOTP reveals a high optical transmittance of more than 60% in the visible region, a high extinction ratio of about 20 dB in the 0.1 THz–2.5 THz and a low insertion loss below 2 dB in the 0.1 THz–1.4 THz. The proposed FOTP can significantly improve the overall performance of THz optical systems and be easily fabricated by commercial display techniques. Our concept opens up a new window for highly flexible and optically transparent THz devices.

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“…They are important functions for modern optical systems. [1,2] They have facilitated polarization selection and control in a wide range of applications, such as optical sensing, [3,4] imaging and display, [5,6] optical analysis, [7,8] and optical communications. [9,10] A variety of optical polarizers have been implemented based on different bulk material device platforms, such as refractive prisms, [11,12] birefringent crystals, [13,14] fiber components, [15,16] and integrated photonic devices.…”

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confidence: 99%

Silicon integrated nanophotonic polarizers with graphene oxide 2D films

Moss

2024

Preprint

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We experimentally demonstrate waveguide and microring resonator (MRR) polarizers by integrating 2D graphene oxide (GO) films onto silicon (Si) photonic devices. The 2D GO films with highly anisotropic light absorption are on-chip integrated with precise control over their thicknesses and sizes. Detailed measurements are performed for the fabricated devices with different GO film thicknesses, coating lengths, and Si waveguide widths. The results show that a maximum polarization-dependent loss (PDL) of ~17 dB is achieved for the hybrid waveguides, and the hybrid MRRs achieved a maximum polarization extinction ratio (PER) of ~10 dB. We also characterize the wavelength- and power-dependent response for these polarizers. The former demonstrates a broad operation bandwidth of over ~100 nm, and the latter verifies performance improvement enabled by photo-thermal changes in GO films. By fitting the experimental results with theoretical simulations, we find that the anisotropy in the loss of GO films dominates the polarization selectivity of these devices. These results highlight the strong potential of 2D GO films for realizing high-performance polarization selective devices in Si photonic platform.

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Fabrication of wire grid polarizer for spectroscopy application: From ultraviolet to terahertz

Cited by 18 publications

References 131 publications

Integrated optical polarizers employing 2D materials

Integrated optical polarizers employing 2D materials

Ultrathin, highly flexible and optically transparent terahertz polarizer based on transparent conducting oxide

Silicon integrated nanophotonic polarizers with graphene oxide 2D films

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