We report the first observation of type I and type II fiber grating behaviors in making polymer optical fiber Bragg gratings. Our observation reveals that there are two distinctive stages in the fabrication of polymer optical fiber Bragg gratings. Notably the two stages of grating formation correspond to low and high-index modulation gratings, which match well with those in silica fiber grating fabrication. Thus we refer them as type I and Hollister Co Canada Online type II polymer fiber gratings, following the same nomenclatures for different types of silica fiber gratings. In addition, the characteristics and formation mechanism Hollister Clothing Store Locations In Canada
for type I and type II polymer fiber gratings are also examined.
Temperature in a continuous annealing furnace is studied by furnace modelling using two methods. A 3D model is used to investigate the temperature distribution of the steel strip that is being annealed and the furnace thermocouple probes, and information from the 3D model enables
the construction of a highly simplified 1D/2D model, which predicts furnace and strip temperatures with very good agreement to the 3D model. The simple model has a very short solution time and is suitable for rapid simulation of alternative furnace operating conditions in order to optimise heat treatment quality, plant throughput and energy consumption.