Improvement of comb lines quality employing double-pass architecture in Brillouin-Raman laser

• Published in: Laser physics letters Vol. 8; no. 11; pp. 823 - 827
• Main Authors: Sonee Shargh, R., Al-Mansoori, M.H., Anas, S.B.A., Sahbudin, R.K.Z., Zamzuri, A.K., Mahdi, M.A.
• Format: Journal Article
• Language: English
• Published: Berlin WILEY-VCH Verlag 01.11.2011; WILEY‐VCH Verlag; Wiley
• Subjects: Exact sciences and technology; fiber laser; Fiber lasers; Fundamental areas of phenomenology (including applications); large effective area fiber; Lasers; Optics; Physics; Raman lasers; Rayleigh scattering; stimulated Brillouin scattering; stimulated Raman scattering; Wave optics; Wave propagation, transmission and absorption; Stimulated scattering; Rayleigh scattering; Stokes lines; Signal-to-noise ratio; Reflectors; Stimulated Brillouin scattering; Stimulated Raman scattering; Electromagnetic wave propagation; large effective area fiber; Optical dispersion compensation; Mirrors; Nonlinear optics; fiber laser; Raman lasers; Fiber lasers
• ISSN: 1612-2011; 1612-202X
• DOI: 10.1002/lapl.201110075

We demonstrate a generation of multiple wavelength lasers incorporating a Brillouin‐Raman fiber laser using a double‐pass structure. The Raman and Brillouin amplification medium is provided by the combination of 11 km long dispersion‐compensating‐fiber and 25 km long large‐effectivearea‐fiber. The laser structure is primarily pumped by single Raman pump wavelength at 1455 nm. The loop mirror is utilized as the reflector, which allows Stokes lines and pump light to propagate back into the cavity. A flat output of multiwavelength lasers with uniform optical signal‐to‐noise ratio across the flat bandwidth is realized from the proposed laser structure. (© 2011 by Astro Ltd., Published exclusively by WILEY‐VCH Verlag GmbH & Co. KGaA) (© 2011 by Astro Ltd., Published exclusively by WILEY‐VCH Verlag GmbH & Co. KGaA)