Extremely High-Birefringent Asymmetric Slotted-Core Photonic Crystal Fiber in THz Regime

Raonaqul Islam, Selim Habib, G.K.M. Hasanuzzaman, Redwan Ahmad, Sohel Rana, Shubi Felix Kaijage

Research output: Contribution to journalJournal articleResearchpeer-review


We present a thorough numerical analysis of a highly birefringent slotted porous-core circular photonic crystal fiber (PCF) for terahertz (THz) wave guidance. The slot shaped air-holes break the symmetry of the porous-core which offers a very high birefringence whereas the compact geometry of the circular cladding confines most of the power in the fiber-core. The fiber structure reported in this letter exhibits simultaneously ultrahigh modal birefringence of 7.5 × 10−2 and a very low effective absorption loss of 0.07 cm−1 for y-polarization mode at an operating frequency of 1 THz. It is highly anticipated that the slotted-core waveguide would be of very much convenience in many polarization maintaining THz appliances.
Original languageEnglish
JournalIEEE Photonics Technology Letters
Issue number21
Pages (from-to)2222-2225
Publication statusPublished - 2015


  • Birefringence
  • Polarization
  • Photonic crystal fiber
  • Porous-core
  • Terahertz


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