The Experts below are selected from a list of 5058 Experts worldwide ranked by ideXlab platform

Weidong Zhou - One of the best experts on this subject based on the ideXlab platform.

  • fano resonance photonic Crystal Filters and modulators
    2019
    Co-Authors: Weidong Zhou, Shanhui Fan
    Abstract:

    Abstract In this chapter, we introduce narrow spectral band Fano Filters based on single layer or bilayer 2D photonic Crystal slabs (PCSs). The quality factor can be controlled by lattice parameters, as well as the coupling between two coupled PCS cavities. Based on charge-induced index change properties, high speed spatial light modulators were proposed and demonstrated as well. Finally, optical forces in these coupled bilayer PCS cavities are investigated, for optomechanical control of the optical cavities.

  • coupled double layer fano resonance photonic Crystal Filters with lattice displacement
    Applied Physics Letters, 2013
    Co-Authors: Yichen Shuai, Deyin Zhao, Jung-hun Seo, Shanhui Fan, Arvinder Singh Chadha, Hongjun Yang, Weidong Zhou
    Abstract:

    We present here ultra-compact high-Q Fano resonance Filters with displaced lattices between two coupled photonic Crystal slabs, fabricated with Crystalline silicon nanomembrane transfer printing and aligned e-beam lithography techniques. Theoretically, with the control of lattice displacement between two coupled photonic Crystal slabs layers, optical filter Q factors can approach 211 000 000 for the design considered here. Experimentally, Q factors up to 80 000 have been demonstrated for a filter design with target Q factor of 130 000.

  • Double-layer Fano resonance photonic Crystal Filters
    Optics express, 2013
    Co-Authors: Yichen Shuai, Deyin Zhao, Zhaobing Tian, Jung-hun Seo, David V. Plant, Shanhui Fan, Weidong Zhou
    Abstract:

    We report ultra-compact surface-normal high-Q optical Filters based on single- and double-layer stacked Fano resonance photonic Crystal slabs on both Si and quartz substrates. A single layer photonic Crystal filter was designed and a Q factor of 1,737 was obtained with 23 dB extinction ratio. With stacked double-layer photonic Crystal configuration, the optical filter Q can increase to over 10,000,000 in design. Double-layer Filters with quality factor of 9,734 and extinction ratio of 8 dB were experimentally demonstrated, for a filter design with target Q of 22,000.

Simon Verghese - One of the best experts on this subject based on the ideXlab platform.

  • Dual-band infrared metallodielectric photonic Crystal Filters
    Applied Physics Letters, 2000
    Co-Authors: J. A. Oswald, K. A. Mcintosh, L.j. Mahoney, Simon Verghese
    Abstract:

    We have designed a metallodielectric photonic Crystal with planar metallic scatterers to produce high reflectance in both the 3–5 and 8–12 μm atmospheric windows over a wide range of angles of incidence. We have fabricated similar Crystals using photolithography with Al scatterers in a polymer dielectric medium and measured their optical transmission, confirming the results of our design simulations. A fabricated filter produced a reflection band with >30 dB rejection and a fractional bandwidth of 0.38. Our results show that it is possible to fabricate infrared photonic Crystal Filters comparable in performance to those with thick metal elements, but with the ease of manufacture of thin metal layers.

Graham Town - One of the best experts on this subject based on the ideXlab platform.

  • Polymeric THz 2D Photonic Crystal Filters Fabricated by Fiber Drawing
    IEEE Transactions on Terahertz Science and Technology, 2012
    Co-Authors: Matthias Stecher, Christian Jansen, Mehdi Ahmadi-boroujeni, Richard Lwin, Alessio Stefani, Martin Koch, Graham Town
    Abstract:

    In this paper, we report on a new form of polymeric 2D photonic Crystal Filters for THz frequencies fabricated using a standard fiber drawing technique. The band stop Filters were modeled and designed using the generalized multipole technique. The frequency and angle-dependent transmission characteristics of the photonic Crystal structures were characterized in a THz time-domain spectrometer.

Shanhui Fan - One of the best experts on this subject based on the ideXlab platform.

  • fano resonance photonic Crystal Filters and modulators
    2019
    Co-Authors: Weidong Zhou, Shanhui Fan
    Abstract:

    Abstract In this chapter, we introduce narrow spectral band Fano Filters based on single layer or bilayer 2D photonic Crystal slabs (PCSs). The quality factor can be controlled by lattice parameters, as well as the coupling between two coupled PCS cavities. Based on charge-induced index change properties, high speed spatial light modulators were proposed and demonstrated as well. Finally, optical forces in these coupled bilayer PCS cavities are investigated, for optomechanical control of the optical cavities.

  • coupled double layer fano resonance photonic Crystal Filters with lattice displacement
    Applied Physics Letters, 2013
    Co-Authors: Yichen Shuai, Deyin Zhao, Jung-hun Seo, Shanhui Fan, Arvinder Singh Chadha, Hongjun Yang, Weidong Zhou
    Abstract:

    We present here ultra-compact high-Q Fano resonance Filters with displaced lattices between two coupled photonic Crystal slabs, fabricated with Crystalline silicon nanomembrane transfer printing and aligned e-beam lithography techniques. Theoretically, with the control of lattice displacement between two coupled photonic Crystal slabs layers, optical filter Q factors can approach 211 000 000 for the design considered here. Experimentally, Q factors up to 80 000 have been demonstrated for a filter design with target Q factor of 130 000.

  • Double-layer Fano resonance photonic Crystal Filters
    Optics express, 2013
    Co-Authors: Yichen Shuai, Deyin Zhao, Zhaobing Tian, Jung-hun Seo, David V. Plant, Shanhui Fan, Weidong Zhou
    Abstract:

    We report ultra-compact surface-normal high-Q optical Filters based on single- and double-layer stacked Fano resonance photonic Crystal slabs on both Si and quartz substrates. A single layer photonic Crystal filter was designed and a Q factor of 1,737 was obtained with 23 dB extinction ratio. With stacked double-layer photonic Crystal configuration, the optical filter Q can increase to over 10,000,000 in design. Double-layer Filters with quality factor of 9,734 and extinction ratio of 8 dB were experimentally demonstrated, for a filter design with target Q of 22,000.

Wang Chun-cheng - One of the best experts on this subject based on the ideXlab platform.

  • Preparation of 10 MHz Band-stop Crystal Filter
    Piezoelectrics and Acoustooptics, 2009
    Co-Authors: Wang Chun-cheng
    Abstract:

    In order to bring down the narrow wave band of single side-band communication service,a new kind of middle-high frequency three stage grid model band-stop quartz Crystal Filters,which made use of three pieces Crystal resonator and operated at 10 MHz,was designed and prepared in this paper.The key techniques such as the design of semi-manufactures of 10 MHz filtering Crystals and the achieved of given characteristics of products,such as insert loss≤5 dB,3 dB width in band-hinder≤±3 kHz,attenuation in band-hinder(restrictions on wave pattern)≥45 dB were solved.In addition,as a contrasts the filter circuit diagrams of two stage and three stage,true measurement transmission curve of 10 MHz band-stop Filters were given in this paper.