… far-field distribution is essential for estimations of coupling efficiencies and for determining
of the mode field diameter from far-field … hole size \(\left( {d/\varLambda } \right)\), the far-field …

… In this study, the effective area values in 6 different PCFs that have non-Gaussian …
Measurements of mode field diameter and effective area of photonic crystal fibers by far-field …

… potential of photonic crystal fiber (PCF) … measured results of the two-dimensional far-field
pattern at the output end of the fabricated quasi-uniform PCF. Here, we utilized the single-mode …

… , and the mode field diameter is calculated from the fitted mode field distribution curve. …
Measurements of mode field diameter and effective area of photonic crystal fibers by far-field …

… Further, the half-mode field diameter can be calculated using the following Marcuse formula
… -mode field diameter, called the effective modal spot size. In terms of the modal spot size, …

… Since far-field measurements are helpful in characterizing … Mode (ESM) operation [2], large
or ultrasmall Mode Field … for effective cladding index can be used to compute farfield intensity …

… the scattered far-field spectrum originating from excitation of whispering-gallery modes in the
… We define the local taper ratio T R as the dimension of a feature in the tapered fiber divided …

… a core diameter of 91.2 μm, from both near-field and far-field … the effective mode field diameter
(MFD) of a fiber by a factor of … (c) Measured losses of unclad Ge-As-Se glass fiber in 2–9 …

… In this paper, we proposed a hybrid photonic crystal fibre (HPCF) with five … far field profile
is also useful to analyzed PCF. This distribution is measure the beam profile outside the fiber …

… The mode field diameter is ∼30 µm. The inset in Fig. 9(c) shows the output laser … ) Measured
amplified output power as a function of pump power. Inset: laser beam profile in the far field. …