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Optimal design of cascaded long-period waveguide grating equalizer for broadband Er-Yb co-doped phosphate glass waveguide amplifiers

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1 Author(s)
Haiyan Chen ; School of Physics Science and Technology, Yangtze University, Jingzhou, 434023, China

Broadband integrated Er-Yb codoped phosphate glass waveguide amplifier based on cascaded long-period waveguide grating gain-equalizer is proposed. The proposed cascaded long-period waveguide grating gain-equalizer consists of some different long-period waveguide grating filtering unit cells, and each cell can suppress certain peak gain at a specific wavelength. The intrinsical gain spectrum of amplifier is obtained by solving a set of rate and power propagation equations with overlapping integral-Runge Kutter method. The effect of the transmission spectrum of the proposed cascaded long-period waveguide grating on the flattening gain of Er-Yb codoped phosphate glass waveguide amplifier is discussed. The transmission function of the cascaded long-period waveguide grating filter is obtained.

Published in:

Communications and Photonics Conference and Exhibition (ACP), 2009 Asia  (Volume:2009-Supplement )

Date of Conference:

2-6 Nov. 2009