Journal
OPTICS AND LASER TECHNOLOGY
Volume 105, Issue -, Pages 276-280Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.optlastec.2018.03.014
Keywords
Fiber design; Polarization-maintaining; Bandgap; Terahertz
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Funding
- Fundamental Research Funds for the Central Universities [W17JB00550, W17RC00020]
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We present a polarization-maintaining photonic bandgap fiber (PBGF) in terahertz (THz) regime, consisting of a quasi-elliptical hollow-core (QEHC) and triangularly arranged hexagonal holes in cladding. Thanks to the specially designed core shape, the QEHC-PBGF can support two stable polarization maintaining fundamental modes. From numerical simulations, birefringence, confinement loss and group velocity dispersion of the fundamental mode group are 9.4 x 10(-4), 3 x 10(-3) cm(-1) and 0.39 psTHz(-1) cm(-1) at 0.9 THz, respectively. Moreover, we investigate the fiber fabrication tolerance in the context of polarization-maintaining and confinement performances. The proposed QEHC-PBGF is anticipated to be useful in polarization sensitive THz applications. (C) 2018 Elsevier Ltd. All rights reserved.
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