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Subwavelength grating coupler

WebGrating couplers have some major advantages including compact size, wafer-level testing capability, and flexible coupling position, while there are also some drawbacks such as a relatively low coupling efficiency typically below 3 dB, narrow bandwidth, and high wavelength sensitivity. WebOptimization of the Coupler Width The previous grating optimization example matched the fiber mode profile in one direction along the grating. In order to achieve efficient coupling, the fiber mode profile must also be matched in the other direction; i.e., we need to determine the optimum width of the grating coupler as shown in Figure 3 (a).

洪勇智教授(特聘年輕學者) - 國立中山大學光電工程學系

WebIn this paper, an on-chip polarizer passing the transverse-magnetic mode and a polarization beam splitter are proposed. The polarizer achieves an extinction ratio exceeding 20 dB within a spectral range from 1500 nm to 1610 nm, and has a value of 24dB at 1550 nm with a coupling efficiency of 84%. Web21 Nov 2016 · We present a methodology to design broadband grating couplers using one-dimensional subwavelength gratings. Using the presented method, we design subwavelength grating couplers (SWGCs) with 1-dB bandwidths ranging from 50 to 90 nm. Our designed SWGCs have competitive coupling efficiency, as high as −3.8 dB for the … holiday inn culiacan telefono https://ironsmithdesign.com

A 60 μm-Long Fiber-to-Chip Edge Coupler Assisted by Subwavelength …

WebAn on-chip silicon dual-mode multiplexer (MUX) is proposed via a subwavelength grating (SWG)-based directional coupler and a mode blocker. ... Benefiting from the triple SWG coupler, the mode-coupling strength can be significantly enhanced inside the proposed mode MUX, which can achieve a compact coupling length of 8.75 m, a low insertion loss ... WebA superlens, or super lens, is a lens which uses metamaterials to go beyond the diffraction limit. For example, in 1995, Guerra [1] combined a transparent grating having 50nm lines and spaces (the "metamaterial") with a conventional microscope immersion objective. The resulting "superlens" resolved a silicon sample also having 50nm lines and ... WebCongratulations to Hao Sun for passing his thesis dissertation and PhD oral defence this morning! Thanks to Robert Halir for serving as the external examiner… holiday inn c st washington dc

Subwavelength Grating Structures in Silicon-on-Insulator ... - Hindawi

Category:Subwavelength Grating Structures in Silicon-on-Insulator ... - Hindawi

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Subwavelength grating coupler

(PDF) Blazed subwavelength grating coupler

WebSubwavelength-grating-based polysilicon waveguide filter in bulk CMOS: 洪勇智 (演講),(研討會) 台積電專題演講: Silicon photonics prospects and research works at NSYSU: 洪勇智 (演講),(研討會) 太空探索技術研討會: Monolithic optical driver chip for interferometric optical gyroscopes: 洪勇智 (演講),(研討會) Web6 Aug 2024 · Abstract: Surface grating couplers are diffractive periodic structures that enable efficient coupling of light between optical fibers and planar waveguides. …

Subwavelength grating coupler

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WebAlejandro Sánchez-Postigo, J. Gonzalo Wangüemert-Pérez, José Manuel Luque-González, Íñigo Molina-Fernández, Pavel Cheben, Carlos A. Alonso-Ramos, Robert Halir, Jens H. Schmid, Alejandro Ortega-Moñux, "Design of broadband subwavelength-engineered metamaterial grating couplers with subdecibel coupling efficiency in near- and mid … WebSUBWAVELENGTH-STRUCTURED SURFACE GRATING COUPLERS Surface GCs are a fundamental waveguide device for bridging huge mode mismatch between those in a PIC and a single-mode fiber (SMF) [72]. GCs can be designed at any position of a chip and may even be erasable [73] using post- fabrication trimming technology [74, 75].

WebGuan P. Chen S. Chen P. Xu Y. Shi and D. Dai "Low-loss ultracompact transverse-magnetic-pass polarizer with a silicon subwavelength grating waveguide" Opt. Lett. vol. 39 no. 15 pp. 4514-4517 2014. WebTraductions en contexte de "SUB-WAVELENGTH GRATING OPTICAL" en anglais-français avec Reverso Context : The sub-wavelength grating optical element forms an airtight space by a plurality of substrates at least one of which is formed of a transparent material.

WebBecause of the high index contrast, current silicon photonics based optical phased arrays cannot achieve small beam divergence and large field-of-view simultaneously without increasing fabrication complexity. To resolve the dilemma, we propose an ultra-long waveguide grating antenna formed by placing subwavelength segments within the … WebDiffraction by a subwavelength-sized aperture in a metal plane ... Optical Coupler, and Optical Coupling System and Optical System Including the Same ... high-power and narrow linewidth distributed feedback laser. A backside-etched sampled Bragg grating has… In this work, we have demonstrated a low-k, high-power and narrow linewidth ...

Websubwavelength grating (SWG) waveguide as a bridge is proposed and investigated on a 340-nm silicon-on-insulator platform. The PBS is designed with a triple-waveguide directional coupler consisting of two identical silicon waveguides and an SWG waveguide sandwiched between them. The tailorable dispersion relation of the

Web23 Jan 2024 · Experimental results show that the grating coupler has a recorded coupling efficiency of −4.53 dB at a wavelength of 2336 nm with a 3-dB bandwidth of ∼107 nm. The study opens an avenue to developing state-of-the-art light coupling techniques for short-wavelength mid-infrared silicon photonics. Text PR_Revised_MS_v3_AM - Accepted … hughes on wetmoreWeb1 Jul 2015 · In summary, we have design and fabricated non-polarization subwavelength grating coupler for coupling two polarizations into a single waveguide on silicon-on … holiday inn cumberland o\u0027hareWebA double sided grating coupler for thin waveguides -Additive colour mixing by surface relief gratings utilizing the power spectrum of a fluorescent lamp - Analog diffractive elements in SiO2 by electron beam lithography and proportional etching with negative resist ... Resonance-domain and subwavelength diffractive optics: Latest trends - White ... holiday inn culpeper to old rag parking lotWebAmong current grating techniques, subwavelength grating (SWG) couplers have attracted great attention with the merits of flexible refractive index (RI) tailoring, simple fabrication … hughes o\\u0027boyle dentistWebWe focused particularly on fiber-to-chip coupling by means of subwavelength structured surfaces such as line gratings or photonic crystals. With these grating couplers one ... The most general fiber coupler grating using a silicon overlay is case 2(d) where both a sili-con overlay o and waveguide etch e is used to define the grating. This ... holiday inn customer serviceWebMagnonics is a budding research field in nanomagnetism and nanoscience that addresses the use of spin waves (magnons) to transmit, store, and process information. The rapid advancements of this field during last one decade in terms of upsurge in hughes o\u0027boyleWeb10 Aug 2024 · Experimental results show that the grating coupler has a recorded coupling efficiency of -4.53 dB at a wavelength of 2336 nm with a 3-dB bandwidth of ~ 107 nm. The study opens an avenue to... holiday inn customer care