FDTD Analysis of Pulse Amplification in Er-Yb Codoped Garnet Crystal Waveguide-Type Optical Amplifier

Nobuaki HIMENO  Nobuo GOTO  Yasumitsu MIYAZAKI  

Publication
IEICE TRANSACTIONS on Electronics   Vol.E88-C   No.12   pp.2236-2242
Publication Date: 2005/12/01
Online ISSN: 
DOI: 10.1093/ietele/e88-c.12.2236
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Section on Wireless Technologies and Computational Electromagnetics)
Category: EM Analysis
Keyword: 
FDTD,  optical amplifier,  erbium,  ytterbium,  garnet waveguide,  

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Summary: 
Waveguide-type optical amplifiers doped with Ytterbium and Erbium ions are theoretically studied. Sensitization of Er-doped amplifiers with Yb ion doping have many advantages such as the possibility of using broader pumping wavelength range and efficient pumping with smaller pumping power. Transient amplification characteristics of optical short pulses are numerically analyzed using FDTD method. The amplification characteristics are compared with the result of the steady state analysis using the rate equations.