… of higher-order modes in the fibre core. However, one can get … if the loss extinction ratio
between the lowest loss mode (typically, the core fundamental mode) and the second-lowest loss …

… A highly birefringent low-loss photonic crystal fibre with elliptical air holes in the core has been
… Optical characteristics of the fibre: birefringence, effective material loss, confinement loss, …

… low-loss porous core circular photonic crystal fibre is presented for terahertz (THz) wave
guidance. Much of attention is given to the geometries of the fibre … of the fibre. Simulation results …

… We report on a single-mode photonic crystal fiber with … the lowest loss reported for a PCF
not made from VAD prepared silica and at the same time the largest effective area for a low-loss …

A novel low‐loss photonic crystal fibre (PCF) has been suggested for THz spectral applications.
The proposed PCF contains five layers cladding with three layers core. The cladding …

… -based low-loss hollow-core photonic crystal fibre for efficient … fibre exhibits extremely low
average effective material loss of … 0.263 ps/THz/cm with low total loss over 2–2.20 THz bands. …

… low transmission losses. The huge success of chemical vapour deposition in producing
extremely low loss fibre … We have recently revisited it in the context of photonic crystals [2], and …

… Abstract We describe a photonic crystal fibre with an optical loss of 0.58dB/km. We find a
strong correlation between the measured loss minimum and the overall structural scale in …

… the confinement loss because … of low loss birefringent photonic crystal fibre based on a
structure with increasing-diameter air holes is proposed and applied to design PCFs with low loss …

… This restricts the core diameter to being less than about 15 times the operational wavelength
if robust low loss quasi-single mode guidance is to be maintained under practical usage …