Highly birefringent polymer terahertz fiber with honeycomb cladding

Two highly birefringent polymer terahertz (THz) fibers were proposed in this paper, which were formed with honeycomb cladding and some elliptical air holes in the fiber core. The losses and mode birefringence for two different fibers are investigated by finite-different time-domain method. The results show that fiber 2 can achieve both high birefringence (larger than 0.022) and low confinement loss (0.01 dB/m) in a wide THz frequency range. Moreover, compared with a round solid-core fiber, guiding loss of the THz fiber caused by polymer material absorption can be reduced effectively as a part of the mode power is trapped in the air holes.

[1]  Derek Abbott,et al.  THz porous fibers: design, fabrication and experimental characterization. , 2009, Optics express.

[2]  A. Bosserhoff,et al.  Label-Free Probing of the Binding State of DNA by Time-Domain Terahertz Sensing , 2000 .

[3]  R Ulrich,et al.  Side-hole fiber for fiber-optic pressure sensing. , 1986, Optics letters.

[4]  Takeshi Yasui,et al.  Terahertz spectrum analyzer based on a terahertz frequency comb. , 2008, Optics express.

[5]  T. Kurner,et al.  Diffuse Scattering From Rough Surfaces in THz Communication Channels , 2011, IEEE Transactions on Terahertz Science and Technology.

[6]  Peter Uhd Jepsen,et al.  Bendable, low-loss Topas fibers for the terahertz frequency range. , 2009, Optics express.

[7]  Ping Shum,et al.  Polarization Maintaining Air-Core Bandgap Fibers for Terahertz Wave Guiding , 2009, IEEE Journal of Quantum Electronics.

[8]  Daru Chen,et al.  Squeezed lattice elliptical-hole terahertz fiber with high birefringence. , 2009, Applied optics.

[9]  Bora Ung,et al.  Polymer microstructured optical fibers for terahertz wave guiding. , 2011, Optics express.

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

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

[12]  Y. Lai,et al.  Optical birefringence and polarization dependent loss of square- and rectangular-lattice holey fibers with elliptical air holes: numerical analysis. , 2005, Optics express.

[13]  K. Zhong,et al.  Ultrahigh birefringent polymer terahertz fiber based on a near-tie unit , 2011 .

[14]  Din Ping Tsai,et al.  Design of high birefringence and low confinement loss photonic crystal fibers with five rings hexagonal and octagonal symmetry air-holes in fiber cladding , 2011 .