Polarization-dependent photonic crystal fiber optical filters enabled by asymmetric metasurfaces

Ghimire, Indra; Yang, Jingyi; Gurung, Sudip; Lee, Ho Wai Howard

doi:10.1515/nanoph-2022-0001

Cited by 19 publications

(7 citation statements)

References 35 publications

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“…In-fiber polarization-dependent optical filters have been demonstrated by asymmetric nanostructure patterning a plasmonic metasurface on polarization-maintaining photonic-crystal fibers (PM-PCFs) and conventional single-mode fibers (Fig. 10a ) 182 . Polarization-dependent transmission with an efficiency of up to 70% in the telecommunication wavelength has been experimentally demonstrated.…”

Section: Integration With Conventional Optical Elementsmentioning

confidence: 99%

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Integrated metasurfaces for re-envisioning a near-future disruptive optical platform

et al. 2023

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Metasurfaces have been continuously garnering attention in both scientific and industrial fields, owing to their unprecedented wavefront manipulation capabilities using arranged subwavelength artificial structures. To date, research has mainly focused on the full control of electromagnetic characteristics, including polarization, phase, amplitude, and even frequencies. Consequently, versatile possibilities of electromagnetic wave control have been achieved, yielding practical optical components such as metalenses, beam-steerers, metaholograms, and sensors. Current research is now focused on integrating the aforementioned metasurfaces with other standard optical components (e.g., light-emitting diodes, charged-coupled devices, micro-electro-mechanical systems, liquid crystals, heaters, refractive optical elements, planar waveguides, optical fibers, etc.) for commercialization with miniaturization trends of optical devices. Herein, this review describes and classifies metasurface-integrated optical components, and subsequently discusses their promising applications with metasurface-integrated optical platforms including those of augmented/virtual reality, light detection and ranging, and sensors. In conclusion, this review presents several challenges and prospects that are prevalent in the field in order to accelerate the commercialization of metasurfaces-integrated optical platforms.

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Section: Integration With Conventional Optical Elementsmentioning

confidence: 99%

Section: Integration With Conventional Optical Elementsmentioning

confidence: 99%

Integrated metasurfaces for re-envisioning a near-future disruptive optical platform

et al. 2023

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“…The integration of the metasurface with optical fibers brings a disruptive revolution in wavefront modulation engineering, with applications ranging from biosensors [3,21], to optical tweezers [22,23], to optical endoscopes [24,25]. Unlike the discrete metasurfaces, the fiber metasurfaces, as a form of "lab-on-fiber", realize the integration with light sources, and usually only achieve a single or similar function of the light field control [26,27], which limits the original advantages and the development of the fiber metasurface in optics, communications, etc.…”

Section: Introductionmentioning

confidence: 99%

Polarization-Dependent Fiber Metasurface with Beam Collimating and Deflecting

Ma,

Sang,

Lin

et al. 2024

Photonics

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Metasurfaces can arbitrarily manipulate the amplitude, phase, and polarization of optical fields on subwavelength scales. Due to their arbitrary manipulation and compact size, the metasurface can be well integrated with optical fibers. Herein, we demonstrate a polarization-dependent metasurface using birefringent meta-atoms, which can independently control X- and Y-polarization incident light. Each meta-atom allows for the division of phase into 16 steps ranging from 0 to 2π for both X- and Y-polarization, resulting in 256 nanopillars selected from the meta-atom library to satisfy the required phase. With the different effective refractive indices of the cuboid meta-atoms along the X- and Y-axis, we can achieve collimation of the X-polarization emitted beam from an optical fiber while deflecting orthogonally polarized light. As a result, the proposed metasurface collimates an X-polarized beam with a beam radius of 20 μm at z = 1 mm and 43.9 μm at z = 2 mm. Additionally, the metasurface can effectively deflect the Y-polarized beam to 36.01°, consistent with the results of the theoretical computation. The proposed metasurface exhibits a deflection efficiency of 55.6% for Y-polarized beams with a relative polarization efficiency of 82.2%, while the efficiency for the X-polarization is 71.4%. Our work is considered a promising application for optical communication, sensing, and quantum measurement.

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“…The metasurface is composed of subwavelength artificial meta-antennas (13)(14)(15)(16)(17), and it can accurately manipulate the wavefront of electromagnetic waves in subwavelength resolution (18)(19)(20)(21)(22)(23). Meta-devices are easy to be integrated because of the advantages of being flat, ultrathin, and compact (24)(25)(26)(27). Nowadays, various designs and functionalities, impracticable to be implemented in conventional bulky devices, are realized in metasurfaces, such as achromatic meta-lens (28), achromatic meta-lens array (29), meta-lens multiphoton quantum source (30), and beam steering devices in optical (31), THz, and microwave bands (32,33).…”

Section: Introductionmentioning

confidence: 99%

A 6G meta-device for 3D varifocal

Zhang

Chen

et al. 2023

Sci. Adv.

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The sixth-generation (6G) communication technology is being developed in full swing and is expected to be faster and better than the fifth generation. The precise information transfer directivity and the concentration of signal strength are the key topics of 6G technology. We report the synthetic phase design of rotary doublet Airy beam and triplet Gaussian beam varifocal meta-devices to fully control the terahertz beam’s propagation direction and coverage area. The focusing spot can be delivered to arbitrary positions in a two-dimensional plane or a three-dimensional space. The highly concentrated signal can be delivered to a specific position, and the transmission direction can be adjusted freely to enable secure, flexible, and high-directivity 6G communication systems. This technology avoids the high costs associated with extensive use of active components. 6G communication systems, wireless power transfer, zoom imaging, and remote sensing will benefit from large-scale adoption of such a technology.

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Polarization-dependent photonic crystal fiber optical filters enabled by asymmetric metasurfaces

Cited by 19 publications

References 35 publications

Integrated metasurfaces for re-envisioning a near-future disruptive optical platform

Integrated metasurfaces for re-envisioning a near-future disruptive optical platform

Polarization-Dependent Fiber Metasurface with Beam Collimating and Deflecting

A 6G meta-device for 3D varifocal

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