High extinction ratio terahertz switch based on Bragg fiber

We present a theoretical analysis of transmission characteristic of THz waves in liquid-crystal-filled Bragg fiber controlled by an external magnetic field. Detailed calculations on the band of the cladding and the filed distribution in Bragg fiber demonstrate the on-off switching property. Finite Element Method (FEM) is used to calculate the extinction ratio of the switch which reaches to 39.93dB.

[1]  K. Kawase,et al.  Non-destructive terahertz imaging of illicit drugs using spectral fingerprints. , 2003, Optics express.

[2]  Abul K. Azad,et al.  Active Terahertz Metamaterial Devices , 2008 .

[3]  Willie J Padilla,et al.  Active terahertz metamaterial devices , 2006, Nature.

[4]  I. A. Ibraheem,et al.  Low-Dispersive Dielectric Mirrors for Future Wireless Terahertz Communication Systems , 2008, IEEE Microwave and Wireless Components Letters.

[5]  Jinlong He,et al.  Terahertz wave switch based on silicon photonic crystals. , 2007, Applied optics.

[6]  Roshan George,et al.  Hollow polycarbonate waveguides with inner Cu coatings for delivery of terahertz radiation. , 2004, Optics express.

[7]  E. G. Chirkova,et al.  Towards Si1−xGex quantum-well resonant-state terahertz laser , 2001 .

[8]  Ci-Ling Pan,et al.  Magnetically tunable room-temperature 2 pi liquid crystal terahertz phase shifter. , 2004, Optics express.

[9]  Ja-Yu Lu,et al.  Low-loss subwavelength plastic fiber for terahertz waveguiding. , 2005, Optics letters.

[10]  D. Grischkowsky,et al.  Far-infrared time-domain spectroscopy with terahertz beams of dielectrics and semiconductors , 1990 .

[11]  Elmer Estacio,et al.  Low-loss single-mode terahertz waveguiding using Cytop , 2006 .

[12]  Amnon Yariv,et al.  Asymptotic analysis of silicon based Bragg fibers. , 2003, Optics express.

[13]  L.V. Kirkland,et al.  Multiresolution nanoscale sensor-based circuit board testing , 2005, IEEE Autotestcon, 2005..

[14]  I. Park,et al.  Terahertz pulse propagation in plastic photonic crystal fibers , 2002, 2002 IEEE MTT-S International Microwave Symposium Digest (Cat. No.02CH37278).

[15]  X. Bai,et al.  Proposal for Ultralow Loss Hollow-Core Plastic Bragg Fiber With Cobweb-Structured Cladding for Terahertz Waveguiding , 2007, IEEE Photonics Technology Letters.

[16]  Willie J Padilla,et al.  Dynamical electric and magnetic metamaterial response at terahertz frequencies , 2006, 2006 Conference on Lasers and Electro-Optics and 2006 Quantum Electronics and Laser Science Conference.

[17]  Ikmo Park,et al.  Terahertz pulse propagation in plastic photonic crystal fibers , 2002, IMS 2002.

[18]  Maksim Skorobogatiy,et al.  Ferroelectric all-polymer hollow bragg fibers for terahertz guidance , 2007 .

[19]  L. Fekete,et al.  Ultrafast opto-terahertz photonic crystal modulator. , 2007, Optics letters.

[20]  M. Daniel.  Device physics: A terahertz modulator , 2006, Nature.

[21]  Richard G. Baraniuk,et al.  Terahertz imaging with compressed sensing and phase retrieval , 2008 .

[22]  Chain‐Shu Hsu,et al.  Liquid Crystals , 1934, Nature.

[23]  M Ibanescu,et al.  Low-loss asymptotically single-mode propagation in large-core OmniGuide fibers. , 2001, Optics express.

[24]  E. Linfield,et al.  Terahertz semiconductor-heterostructure laser , 2002, Nature.