The aim of this paper is to provide a comprehensive review of mode-division and spatial-
division optical fiber sensors, mainly encompassing interferometers and advanced fiber …

The unique modal characteristics of ring core fibers (RCFs) potentially enable the
implementation of mode-division multiplexing (MDM) schemes that can increase optical data …

Orbital angular momentum (OAM) modes, having unique properties of a helical phase
structure and doughnut intensity profile, have been widely studied in fiber-optic …

We experimentally investigate mode-division multiplexing in an elliptical ring core fiber
(ERCF) that supports linearly polarized vector modes (LPV). Characterization show that the …

We propose a design strategy of elliptical core few-mode fiber (e-FMF) that supports three
spatial modes with enhanced mode spacing between LP_11a and LP_11b, to suppress …

To overcome the capacity crunch of optical communications based on the traditional single-
mode fiber (SMF), different modes in a few-mode fiber (FMF) can be employed for mode …

Enabled by an enhanced effective index separation (Δneff= 1.7× 10^− 4) and low
transmission loss (0.8 dB/km), OAM states are propagated over 13.4 km in an air core fiber …

We present a polarization-maintaining PANDA ring-core fiber (PM-PRCF) characterized by
the combination of a ring-core structure with two stress-applying rods. This special fiber …

We propose a novel waveguide design of a polarization-maintaining few mode fiber (PM-
FMF) supporting≥ 10 non-degenerate modes, utilizing a central circular air hole and a …

We design, fabricate, and characterize two types of low-loss weakly guiding ring-core fibers
(RCFs) supporting orbital angular momentum (OAM) modes. The ring core and cladding …