Ray tracing methods in numerical analysis of double-clad microstructured optical fibre coupler

Raman Spectra of a PMMA Microstructured Optical Fibre and Direct Measurement of Its Gain Coefficient

 A polymethylmethacrylate (PMMA) microstructured polymer optical fiber (mPOF) is fabricated and characterized. Using the cut-back technique the fiber loss is measured which is higher than the step-index silica fibers. Through a novel experimental scheme, the backward Stokes spectrum of the fabricated mPOF is recorded over a range exceeding 3000 cm‑1 during the cut-back method and compared ...

Simplifying numerical ray tracing for characterization of optical systems.

Ray tracing, a computational method for tracing the trajectories of rays of light through matter, is often used to characterize mechanical or biological visual systems with aberrations that are larger than the effect of diffraction inherent in the system. For example, ray tracing may be used to calculate geometric point spread functions (PSFs), which describe the image of a point source after i...

827nm Bragg grating sensor in multimode microstructured polymer optical fibre

Microstructured Optical Fiber for X-ray Detection

A novel scintillating optical fiber is presented using a composite micro-structured quartz optical fiber. Scintillating materials are introduced into the multiple inclusions of the fiber. This creates a composite optical fiber having quartz as a cladding with an organic scintillating material core. X-ray detection using these fibers is compared to a collimated cadmium telluride (CdTe) detector ...

Heat transfer within a microstructured polymer optical fibre preform

Preform heating is one of the most important steps in the polymer fibre fabrication process due to the potential distortion that can be introduced when exposing the structure to high temperatures. Such heating is further complicated when internal air-structures are introduced into the preform such as in Microstructured Polymer Optical Fibre (MPOF) preforms. The aim of this study was thus to inv...