Low Loss Highly Birefringent Porous Core Fiber for Single Mode Terahertz Wave Guidance

다국어 초록 (Multilingual Abstract)

A novel porous-core hexagonal lattice photonic crystal fiber (PCF) is designed and analyzed for efficient terahertz (THz) wave propagation. The finite element method based Comsol v4.2 software is used for numerical analysis of the proposed fiber. A perfectly matched layer boundary condition is used to characterize the guiding properties. Rectangular air-holes are used inside the core to introduce asymmetry for attaining high birefringence. By intentionally rotating the rectangular air holes of porous core structure, an ultrahigh birefringence of 0.045 and low effective material loss of 0.086 cm -1 can be obtained at the operating frequency of 0.85 THz. Moreover, single-mode properties, power fraction in air core and confinement loss of the proposed PCF are also analyzed. This is expected to be useful for wideband imaging and telecom applications.

참고문헌 (Reference)

1 M. M. Awad, "Transmission terahertz waveguide-based imaging below the diffraction limit" 86 : 221107-, 2005

2 A. Y. Pawar, "Terahertz technology and its applications" 5 : 157-163, 2013

3 S. Fathololoumi, "Terahertz quantum cascade lasers operating up to -200 K with optimized oscillator strength and improved injection tunneling" 20 : 3866-, 2012

4 R. M. Woodward, "Terahertz pulsed imaging of skin cancer in the time and frequency domain" 29 : 257-259, 2003

5 H. Han, "Terahertz pulse propagation in a plastic fiber" 80 : 2634-2639, 2002

6 A. W. M. Lee, "Real-time terahertz imaging over a standoff distance (> 25 meters)" 89 : 1-3, 2006

7 M. R. Hasan, "Polarization-maintaining low-loss porous-core spiral photonic crystal fiber for terahertz wave guidance" 55 : 4145-4152, 2016

8 J. Noda, "Polarization-maintaining fibers and their applications" 4 : 1071-1089, 1986

9 K. Wang, "Metal wires for terahertz wave guiding" 432 : 376-379, 2004

10 L. J. Chen, "Low-loss subwavelength plastic fiber for terahertz waveguiding" 31 : 308-310, 2006

11 M. B. Byrne, "Low-loss and bend-insensitive terahertz fiber using a rhombic shaped core" 98 : 151104-, 2011

12 A. Dupuis, "Hollow-core terahertz optical waveguides with hyperuniform disordered reflectors" 28 : 896-907, 2011

13 M. Cho, "Highly birefringent terahertz polarization maintaining plastic photonic crystal fibers" 16 : 712-, 2008

14 N. Chen, "High-birefringence, lowloss porous fiber for single-mode terahertz wave guidance" 52 : 5297-5302, 2013

15 K. M. Kiang, "Extruded singlemode non-silica glass holey optical fibres" 38 : 546-547, 2002

16 S. E. Kim, "Elliptical defected core photonic crystal fiber with high birefringence and negative flattened dispersion" 20 : 1385-1391, 2012

17 G. K. M. Hasanuzzaman, "A novel low loss, highly birefringent photonic crystal fiber in THz regime" 28 : 899-902, 2016

18 R. Islam, "A novel low loss diamondcore porous fiber for polarization maintaining terahertz transmission" 28 : 1537-1540, 2016