Enhancing performance of multiwavelength Brillouin-Raman fiber laser by capturing residual pump power

A. K. Abass, M. H. Al-Mansoori, Md Zaini Jamaludin, Fairuz Abdullah, T. F. Al-Mashhadani, M. H. Ali

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

We demonstrate a simple design to enhance the performance of a multiwavelength Brillouin-Raman fiber laser by capturing the residual Raman pump power (RPP) from the laser cavity using a wavelength-selective coupler. The performance parameters of the laser system are investigated and compared with the conventional design under the same input design parameters. Both laser systems at a RPP of 375 mW can generate up to 33 Stokes lines with an equal channel spacing of 0.08 nm; however, the tunability of the laser without injection of residual RPP is 25% higher than the conventional laser structure. In addition, for a laser system without residual RPP injection, increasing the RPP improves the laser performance and generates up to 42 Stokes lines with a tunability of 24.5 nm, from 1570 to 1594.5 nm, at 475mW. In contrast, the laser system with a residual RPP has the worst performance as the pump power is increased, and generates only nine Stokes lines with a tuning range of 5 nm at the same RPP of 475 mW.

Original languageEnglish
Pages (from-to)5187-5192
Number of pages6
JournalApplied Optics
Issue number23
DOIs
Publication statusPublished - 10 Aug 2014

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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