Extended L-band 4-Core Er/Yb co-doped fiber amplifier based on 1018 nm cladding pumping

Author:

He LeORCID,Qiu QiangORCID,Yin Xiaoke,Gu Zhimu,Liu Shaokun,Li Wenzhen,Xing Yingbin,Chu YingboORCID,Dai Nengli,Li Jinyan

Abstract

The extended L-band 4-core Er/Yb co-doped fiber and amplifier (MC-EYDFA) is first proposed and demonstrated, to the best of our knowledge, for space division multiplexing combined with wavelength division multiplexing application. The fiber core co-doped with Er/Yb/P is adopted for bandwidth expansion, and the long wavelength extends to 1625 nm. Numerical simulations further show that efficient amplification and higher saturation power are achieved with the 1018 nm cladding pumping. Based on the integrated 4-core fiber amplifier, an average gain of ∼22 dB covering 1575-1625 nm is experimentally obtained with a 4 W pump power and a 3 dBm total signal power, and the max core-dependent gain (CDG) variation is measured to be 1.7 dB.

Funder

National Natural Science Foundation of China

Publisher

Optica Publishing Group

Subject

Atomic and Molecular Physics, and Optics

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