CW-Pumped Evanescent Amplification Based on Side-Polished Fiber with Heavily Er3+-Doped Glass Overlay

摘要: A novel diffractive-pumping scheme is proposed to improve the evanescent amplification using blazed fiber grating for first time. We also investigate cw-pumped-evanescent at 1.55 mu m wavelength with relative optical gain pumped 1480 nm of around 2 dB based on side-polished effective interaction length as long 16 mm and a heavily Er3+-doped (N-Er(3+) > 1.19 x 10(21) ions/cm(3)), low refractive index (n(1550) < 1.47) glass overlay, which has no concentration quenching (tau(f) = 9.0 ms).