Microstructured polymer optical fibre

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...

Imaging with microstructured polymer fibre.

The imaging capabilities of a multicore microstructured polymer optical fibre with a square array of 112 air holes are demonstrated. Coherent imaging is achieved either by guiding light in polymer cores between air holes, or by guiding light in the air channels themselves. This potentially provides a miniaturised endoscope for medical applications, or a two-dimensional parallel optical data lin...

827nm Bragg grating sensor in multimode microstructured polymer optical fibre

870nm Bragg grating in single mode TOPAS microstructured polymer optical fibre [7753-166]

We report the fabrication and characterization of a fiber Bragg grating (FBG) with 870 nm resonance wavelength in a single-mode TOPAS microstructured polymer optical fiber (mPOF). The grating has been UV-written with the phasemask technique using a 325 nm HeCd laser. The static tensile strain sensitivity has been measured as 0.64 pm/μstrain, and the temperature sensitivity was -60 pm/C. This is...

Solution doping of microstructured polymer optical fibres.

Solution doping of microstructured polymer optical fibres [mPOF] is demonstrated, a technique which allows dopants to be introduced after polymerisation through the microstructure. Controlled diffusion is used to disperse the dopant uniformly across the fibre core, and the final concentration can be systematically varied by appropriate choice of conditions. We use this technique to produce a fi...