In recent years, additive manufacturing, also known as three-dimensional (3D) printing, has
emerged as an environmentally friendly green manufacturing technology which brings great …

Ultrafast fibre lasers are fundamental building blocks of many photonic systems used in
industrial and medical applications as well as for scientific research. Here, we review the …

In this paper, we report an advance in increasing core size of effective single-mode chirally-
coupled-core (CCC) Ge-doped and Yb-doped double-clad fibers into 55µm to 60µm range …

The fiber laser, with its humble beginning in the late 1980s, has undergone tremendous
development in the past decade or so, transforming itself from a research curiosity to a major …

In this paper, we report the mode area scaling of a rare-earth doped step index fiber by
using low numerical aperture. Numerical simulations show the possibility of achieving an …

Single-mode operation in a large-mode-area fiber laser is highly desired for power scaling.
We have, for the first time, demonstrated a 50μm-core-diameter Yb-doped all-solid photonic …

We report a novel “single trench fiber” design for mode area scaling of the fundamental
mode while offering effective single mode operation for a compact fiber laser device. This …

Bending performance of the Multi-trench Fibers (MTFs) has been investigated using the
Finite Element Method. Numerical investigations show that MTFs can provide low-loss …

Mode area scaling of optical fiber is highly desirable for high power fiber laser applications.
It is well known that incorporation of additional smaller cores in the cladding can be used to …

The single trench fiber (STF) is a promising fiber design for mode area scaling and higher
order mode (HOM) suppression. In this Letter, we experimentally demonstrate the strong …