Theoretical Investigation of Oxazine 170 Perchlorate Doped Polymeric Optical Fiber Amplifier

Received Aug 7, 2017; Revised Oct 25, 2017; Accepted Nov 6, 2017

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1. Introduction

Organic electronics have become an alternative for inorganic based devices. The high quantum efficiency of organic fluorophores is useful in numerous optical applications: sensors, light sources, lasers, and amplifiers [1–10]. The high quantum yield of fluorescence was reported for laser organic dyes (xanthenes, oxazines, 7-aminocoumarins) [11]. Their structural properties allow incorporation directly into polymethyl methacrylate (PMMA) which is commonly used in polymer optical fiber technology. The spectroscopic properties of 7-(diethylamino)coumarin, Oxazine 170 Perchlorate, and codoped Perylene-Rhodamine 6G fibers were previously investigated [12–15]. Optical transmission can be easily obtained for PMMA attenuation optical windows of 465, 525, 565, and 650 nm. The lowest attenuation of the PMMA core POF is approximately 100 dB/km [16–18]. Much higher losses are observed for the infrared radiation spectrum. The high numerical aperture, the good optical transmission in the visible spectrum range, and the excellent mechanical and processing properties yield numerous constructions of optical fiber amplifiers and lasers based on PMMA matrix. Solvent-free doping technique is especially desired in the polymeric fiber drawing technology. The impurities and solvent residues cause technological problems during the drawing process of polymeric fibers [16]. There are known luminescent organic and inorganic complexes in polymeric optical fiber technology. However, the absorption and emission cross sections of organic dyes are typically significantly higher than those observed in lanthanide ions, which are well known for their narrow absorption bands. Although the absorption cross section luminescence efficiency of lanthanides can be improved using organic ligands and energy transfer (antenna effect), the chelate molecules luminescence is quenched by PMMA nonradiative transitions and efficient luminescence can be observed only for triplet state europium (Eu³⁺) and terbium (Tb³⁺) complexes [19–26]. In such circumstances, organic dyes are frequently...