新型聚合物光纤放大器的研究

The foundation focused on solving the problem of heat bleaching in Rhodamine B doped plastic optical fiber amplifier by applying the double-clad structure. The relationship of structure、parameters、manufacture、dopant concentration、 absorption and fluorescence spectrums of double-clad fiber amplifier with pump efficiency、gain and heat bleaching has been analyzed. Rhodamine B-doped (1~100ppm) concentric and eccentric double-clad fibers with core diameter between 250~290μm and cladding diameter between 780~900μm were fabricated. Experiments show that the peak values of the fiber's absorption spectrums are between 550~560nm and the peak values of fluorescence spectrums which moves to long wavelength with the increase of concentration are between 580~610nm. The gain and stability measurement of the fiber amplifier with unidirection pumping and V-groove side-pumping, together with numerical results, prove that the double-clad structure can solve the heat bleaching problem and achieve high-gain, making the amplifier possible for practical use. Plastic photonic crystal fiber for the double-clad fiber amplifier has also been fabricated.

研究新型双包层结构掺染料聚合物光纤的掺杂浓度、吸收谱和荧光谱等，并探索用共轭聚合物制作光纤放大器的可能性。目标是实现聚合物光纤通信窗口（低损耗区）处能长期稳定工作的高增益和高效的光放大，为聚合物光纤的应用提供更多新的可能性，使之成为未来信息传输领域的重要发展。