We present a comprehensive study of the strain and temperature-sensing characteristics of
single-mode–multimode–single-mode (SMS) structures based on the modal interference of …

A detailed investigation of the nonlinear multimodal interference in a short graded-index
multimode optical fiber is presented. The analysis is performed for a specific device …

We present a method for ultra-low-loss coupling between two single-mode optical fibers with
different mode-field diameters using multimode interference in a graded-index multimode …

We consider the general problem of free-space beam shaping for coupling in and out of
higher order modes (HOMs) in optical fibers with high purity and low loss. We compare the …

A comparative study of the temperature sensitivities of the single-multi-single mode (SMS)
fiber structures employing step-index and graded-index multimode fibers (MMFs), for two …

Physical insights and characteristics of beam transformations based on multimode
interference (MMI) in multimode waveguides are illuminated and analyzed. Our calculations …

A bend singlemode–multimode–singlemode (SMS) fibre structure based vibration sensor is
proposed and developed. This sensor configuration is very simple and employs a bend SMS …

We demonstrate and explain the existence of a critical wavelength in the transmission
spectrum of single-multi-singlemode fiber structures, employing GeO 2-doped multimode …

We propose a Yb-doped fiber laser with an all-fiber beam shaper based on a single-mode–
graded-index multimode–few-mode fiber (SMF-GIMF-FMF) structure. The excitation …

A new class of all-fiber beam shaping devices has been realized by inverse etching the end
face of single mode and multimode fibers to form a concave cone tip. Concave tip fiber can …