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Optimizing Broadband Distributed Fiber Raman Amplifier | ||
| Al-Ma'mon College Journal | ||
| Article 1, Volume 0, Issue 15, 2018, Pages 106-117 | ||
| Author | ||
| Sinan A. Al-Maghazachi | ||
| Abstract | ||
| Distributed Fiber Raman Amplifier (DFRA) is a key component for future long-distance fiber communication systems since it uses the transmission fiber link as the amplifying (active) medium. However, DFRAs must be designed with a wide flat-gain profile if they are used to amplify wavelength division multiplexing (WDM) signals. DFRAs used for WDM systems using a comprehensive theoretical model. The model describes the variation of wave's power along the fiber when the DFRA is operating with multi-signals and multi-pumps. The model takes into account pump-to-pump, signal-to-signal, and pump-to-signal interactions as well as the fiber loss. The model is also applicable for co-propagating, counter-propagating, and bidirectional pumping configurations. Simulation results are presented to characterize the DFRA operating with different multi-pumping configuration schemes. The results can be used as a guideline to design a DFRA with a flat-gain profile for WDM systems. The results indicate that fifty WDM signals having 1.6 nm channel separation can be amplified with a 70 km single mode fiber (SMF) pumped by five pumps. A gain ripple of 1.4 dB is achieved over 80 nm band with total pumping power less than 800 mW. | ||
| Keywords | ||
| Fiber Raman | ||
|
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