Design of a Polymer-Based Hollow-Core Bandgap Fiber for Low-Loss Terahertz Transmission

Ajanta Barh, Ravi K. Varshney, Bishnu P. Pal, G. P. Agrawal, B. M. A. Rahman

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    We use numerical simulations to design a hollow-core microstructured polymer optical fiber (HC-mPOF) suitable for broadband, terahertz (THz) pulse transmission with relatively low losses and small dispersion. The HC-mPOF consists of a central large air-core surrounded by periodically arranged wavelength-scale circular air holes in a hexagonal pattern, embedded in a uniform Teflon matrix. The THz guidance in this fiber is achieved by exploiting the photonic bandgap (PBG) effect. In our low index contrast Teflon-air (1.44:1) hexagonal periodic lattice, the PBG appears only for a certain range of non-zero values of the longitudinal wavevector. We have achieved PBG over a broad spectral range (bandwidth similar to 400 GHz) ranging from 1.65 to 2.05 THz in the proposed HC-mPOF. The achievable loss coefficient in our designed HC-mPOF is
    Original languageEnglish
    JournalI E E E Photonics Technology Letters
    Issue number15
    Pages (from-to)1703-1706
    Publication statusPublished - 2016


    • OPTICS
    • PHYSICS,
    • THZ
    • Microstructured fiber
    • photonic band-gap
    • polymer fiber
    • terahertz wave
    • Electrical and Electronic Engineering
    • Atomic and Molecular Physics, and Optics
    • Electronic, Optical and Magnetic Materials
    • Bandwidth
    • Dispersion (waves)
    • Energy gap
    • Fibers
    • Group velocity dispersion
    • Microstructure
    • Optical fibers
    • Photonic band gap
    • Photonic bandgap fibers
    • Plastic optical fibers
    • Polymers
    • Polytetrafluoroethylenes
    • Circular air-holes
    • Low index contrast
    • Microstructured fibers
    • Microstructured polymer optical fibers
    • Periodic lattices
    • Photonic bandgap (PBG)
    • Polymer fiber
    • Terahertz transmission
    • Terahertz waves
    • polymer fibres
    • holey fibres
    • numerical analysis
    • optical design techniques
    • optical fibre dispersion
    • optical fibre losses
    • optical polymers
    • photonic band gap
    • photonic crystals
    • bandwidth 300 GHz
    • polymer-based hollow-core bandgap fiber design
    • low-loss terahertz transmission
    • numerical simulations
    • hollowcore microstructured polymer optical fiber
    • HC-mPOF
    • central large air-core
    • periodically arranged wavelength-scale circular air holes
    • PBG
    • longitudinal wavevector
    • loss coefficient
    • group velocity dispersion
    • Optical fiber dispersion
    • Optical losses
    • Propagation losses
    • Other fibre optical devices and techniques
    • Optical system design
    • Photonic bandgap materials
    • Optical polymers and other organic optical materials
    • Numerical approximation and analysis
    • Nonlinear optics
    • Optical propagation, dispersion and attenuation in fibres
    • Fibre optics
    • Nonlinear optics and devices
    • Optical materials
    • Numerical analysis


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