Polystyrene dye doped plastic optical fiber was prepared and used to detect gamma and beta radiation from I151 and TeO4 gamma tracers typically used to get images of tumor areas within the human body. Absorption and fluorescence emission of TMQ, PBDBD365, POPOP styrene doped was performed under gamma and UV-irradiation. The fluorescence efficiency of the binary system PBDBD365-POPOP and the ternary TMQ- PBDBD365-POPOP was compared and according to the experimental results it was shown that the presence of the TMQ dye enhance the fluoresce obtained under I151 radiation. Systematic characterization of the binary system was performed as function of primary dye concentration .
We present side induced fluorescence (SIF) results on laser dye doped unclad plastic optical fibers. The SIF data can be used to obtain optical loss spectra for the low loss region of the absorption tail of the laser dye that has been doped into the fiber. Dyes which have been examined include derivatives of rhodamine and pyromethene. SIF deduced loss results in combination with cutback loss measurements on undoped fibers suggest that the electronic absorption of the laser dye dominates the loss far (> 200 nm) from the peak of the dye absorption (the order of 0.5 cm-1 at 750 nm). Loss measurements of unclad undoped fibers suggest that loss is dominated by scattering and defect mechanisms. In fact these losses are quite high compared to literature measurements of analogous clad fibers. Thus intrinsic loss of the polymer (PMMA in most cases) is minor compared to scattering and defect losses when dealing with unclad fibers. We also present the fit of our dye-doped fiber loss data to homogeneous and inhomogeneous broadening equations and show that broadening is dominated by inhomogeneous mechanisms as is expected.
We report on a procedure to prepare plastic optical fibers with in-line indium electrodes alongside a wave-guiding core. The goal is the realization of an electro-optic modulator device structure entirely contained with the cladding of the fiber. This work is analogous to that of Kuzyk and others at Washington State University, though we report on a different procedure to manufacture the preform from which the fiber is drawn.
We discuss plastic optical fiber technology in the context of its relationship to glass optical fiber technology. POF technology serves as a low cost way to investigate innovative optical fiber material structures. POFs offer some application advantages, especially in low cost broad bandwidth easily interconnected local area networks. Applications to space technology include scintillation sensing and other specialty sensing fibers.
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