Simulation and experimental validation of gain-control parallel hybrid fiber amplifier

Mudhafar Hussein Ali, Fairuz Abdullah, Md Zaini Jamaludin, Mohammed Hayder Al-Mansoori, Thamer Fahad Al-Mashhadani, Abdulla Khudiar Abass

Research output: Contribution to journalArticle

10 Citations (Scopus)


We demonstrate a simulation of a parallel hybrid fiber amplifier in the C+L-band with a gain controlling technique. A variable optical coupler is used to control the input signal power for both EDFA and RFA branches. The gain spectra of the C+L-band are flattened by optimizing the coupling ratio of the input signal power. In order to enhance the pump conversion efficiency, the EDFA branch was pumped by the residual Raman pump power. A gain bandwidth of 60 nm from 1530 nm to 1590 nm is obtained with large input signal power less than -5 dBm. The gain variation is about 1.06 dB at a small input signal power of -30 dBm, and it is reduced to 0.77 dB at the large input signal power of -5 dBm. The experimental results show close agreement with the simulation results.

Original languageEnglish
Pages (from-to)657-662
Number of pages6
JournalJournal of the Optical Society of Korea
Issue number6
Publication statusPublished - 01 Dec 2014

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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