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

A Novel Low-Loss Diamond-Core Porous Fiber for Polarization Maintaining Terahertz Transmission

“…However, the high propagation loss 400 dB/m at 1 THz makes the waveguide impractical for low-loss THz guiding. Use of rectangular airholes [7], [8] or elliptical air-holes [9], [10] in the core can achieve high-birefringence in the order 10 -2 . Nevertheless, the complicated rectangular or elliptical shapes introduce difficulty in practical realization of these structures and transmission loss is yet high due to absorption in the solid material.…”

Low Loss and Low Dispersion Fiber for Transmission Applications in the Terahertz Regime

“…Within the frequency range 0.5-0.9 THz the proposed fiber shows ultralow EML between 0.0103-0.0145cm -1 , which is only between 4.9% and 7.3% of the bulk material loss of the background material. The EML results of this fiber are clearly lower than previously reported values for other designs [14][15][16][17][18][19][20][21][22][23][24][25][26][27]. Investigation of the EML of the terahertz radiation in Fig.…”

“…The proposed fiber exhibits not only low EML but also low dispersion. Slotted fibers with air-cladding [24], [25] circular lattice cladding [26] and kagome cladding [27] were reported earlier.…”

3D Printed Hollow-Core Terahertz Fibers

“…Due to the evolution of these devices in the mid-1980s, however, terahertz radiation has attracted much more attention. Since this part of the spectrum is between the infrared (IR) and microwave frequency ranges, the development of waveguides [1][2][3][4][5][6], filters [7,8], polarizers [9,10], lenses [11,12], and other optical components benefits from the well-established technologies [13][14][15]. The characteristic of terahertz waves to penetrate most dielectric materials offers the possibility of many applications.…”