Tunable Liquid Crystal-Resonant Grating Filter Fabricated by Nanoimprint Lithography

Chang, Ansi; Morton, Keith; Tan, Hua; Murphy, Patrick F.; Wu, Wei; Chou, Stephen Y.

doi:10.1109/lpt.2007.903719

Cited by 43 publications

(22 citation statements)

References 18 publications

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“…g) Scanning electron microscope image of a superimposed grating made by a double NIL process, where a shallower grating is superimposed onto a deeper grating. Reproduced with permission . Copyright 2007, IEEE.…”

Section: Applicationsmentioning

confidence: 99%

Recent Advances in Resonant Waveguide Gratings

Quaranta

Basset

Martin

et al. 2018

Laser & Photonics Reviews

322

199

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Resonant waveguide gratings (RWGs), also known as guided mode resonant (GMR) gratings or waveguide‐mode resonant gratings, are dielectric structures where these resonant diffractive elements benefit from lateral leaky guided modes from UV to microwave frequencies in many different configurations. A broad range of optical effects are obtained using RWGs such as waveguide coupling, filtering, focusing, field enhancement and nonlinear effects, magneto‐optical Kerr effect, or electromagnetically induced transparency. Thanks to their high degree of optical tunability (wavelength, phase, polarization, intensity) and the variety of fabrication processes and materials available, RWGs have been implemented in a broad scope of applications in research and industry: refractive index and fluorescence biosensors, solar cells and photodetectors, signal processing, polarizers and wave plates, spectrometers, active tunable filters, mirrors for lasers and optical security features. The aim of this review is to discuss the latest developments in the field including numerical modeling, manufacturing, the physics, and applications of RWGs. Scientists and engineers interested in using RWGs for their application will also find links to the standard tools and references in modeling and fabrication according to their needs.

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Section: Applicationsmentioning

confidence: 99%

Recent Advances in Resonant Waveguide Gratings

Quaranta

Basset

Martin

et al. 2018

Laser & Photonics Reviews

322

199

View full text Add to dashboard Cite

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“…The resonance of the GMRF is a function of the optical properties of the dielectric materials used: the thickness of the dielectric layers, the period of the SWG, and the fill-fraction (duty-cycle) of the SWG. The sensitivity of GMRFs to the various structural and optical parameters has been exploited to create various types of GMRFs where the resonance condition can be tuned by modifying one or more of these parameters [9][10][11][12]. The resonance of a GMRF can also be tuned by adjusting the angle of incidence of the light source [13].…”

Section: Open Accessmentioning

confidence: 99%

Azimuthally Varying Guided Mode Resonance Filters

et al. 2012

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New and novel sensing schemes require optical functions with unconventional spatial light distributions, as well as complex spectral functionality. Micro-optical elements have shown some flexibility in their ability to spatially encode phase information using surface relief dielectrics. In this paper, we present a novel optical component that exploits the properties of optically resonant structures to make an azimuthally spatially varying spectral filter. The dispersive properties are quite unique with an angular resonance shift of 28 Deg/nm. This device is fabricated using techniques that are compatible with standard micro-electronic fabrication technologies.

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“…Optical elements based on the GMR effect are of increasing importance owing to their applicability in numerous optical systems and devices including communications, nanoelectronics, and laser technology. Examples of present-day uses include filters [3][4][5][6][7], tunable filters [8][9][10][11], sensors [12][13][14], broadband mirrors [15][16][17][18], focusing elements [19,20], wave plates [21] and much more.…”

Section: Introductionmentioning

confidence: 99%

Guided-mode resonance excitation of waveguide grating at oblique incidence in the non-subwavelength region

Sang

Cai

Zhou

et al. 2012

Journal of Modern Optics

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Guided-mode resonance (GMR) excitation of a waveguide grating at oblique incidence in the non-subwavelength region is investigated using the equivalent homogeneous thin-film model. The nondegenerate resonance locations are obtained and the spectral properties are demonstrated by using the rigorous coupled-wave analysis (RCWA) method based on the calculated parameters. It is shown that the dispersion equation of the slab waveguide can provide a reliable approximation in estimating the GMR locations even in the non-subwavelength region. The nondegenerate resonance in the subwavelength region at oblique incidence can be used to tailor an optical filter with good filtering features. Counter-propagating higher-order evanescent waves in the waveguide layer are possible at oblique incidence in the non-subwavelength region. The energy of the electric-field in the waveguide tends to be concentrated as the resonance wavelength decreases, and the lateral enhancement of the standingwave electric-field (SWEF) can be available due to Bragg reflection in the vicinity of the resonance wavelength.

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Tunable Liquid Crystal-Resonant Grating Filter Fabricated by Nanoimprint Lithography

Cited by 43 publications

References 18 publications

Recent Advances in Resonant Waveguide Gratings

Recent Advances in Resonant Waveguide Gratings

Azimuthally Varying Guided Mode Resonance Filters

Guided-mode resonance excitation of waveguide grating at oblique incidence in the non-subwavelength region

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