Effective area limit of large-mode-area solid-core photonic bandgap fibers for fiber laser applications

Design of large-mode-area microstructured fibers with low bending loss for fiber laser applications

“…Recently, it has been reported that an AS-PBGF can serve as a potential candidate for achieving LMA and effectively single-mode operation [5], however, we have found that the increment of the core size in a 1cell core AS-PBGF is limited by its large BL and the upper limit of the effective area in the 1-cell core AS-PBGF is less than 200 μm 2 under bent condition [8]. The issue of increasing core size at constant pitch Λ without increasing the BL can be addressed by increasing the size of the central defect by removing a greater number of rods.…”

“…The issue of increasing core size at constant pitch Λ without increasing the BL can be addressed by increasing the size of the central defect by removing a greater number of rods. We consider a 7-cell core AS-PBGF [8], with 7 rods removed from the core region and 5 cladding rod rings, shown as inset in Fig. 3, where the cladding is composed of a periodic arrangement of high-index rods in a lowindex background.…”

Optical Waveguide Theory by the Finite Element Method

“…In particular, the full vector FE-ID-BPM has been effectively applied to characterizing various PCFs such as HFs [23], [24] and PBGFs [25]. To model PCFs accurately, especially with large air holes or high-index rods, it is crucial to use a full vector model.…”

Design of large mode area multicore photonic crystal fiber with a flat-top mode

“…The main drawback in the development of high power applications is the nonlinear effect, such as Raman scattering, Brillouin scattering and cross phase modulation (XPM) [2]. Since the nonlinear effects have a strong dependence on optical intensity, a reduction of intensity by increasing effective mode area will reduce the nonlinear effects [3].…”