Rodrigues Pinto, Ana MargaridaFrazão, OrlandoSantos, José LuísLópez-Amo Sáinz, Manuel2019-12-232019-12-232011A. M. R. Pinto, O. Frazão, J. L. Santos and M. Lopez-Amo, 'Multiwavelength Raman Fiber Lasers Using Hi-Bi Photonic Crystal Fiber Loop Mirrors Combined With Random Cavities,' in Journal of Lightwave Technology, vol. 29, no. 10, pp. 1482-1488, May15, 2011.0733-872410.1109/JLT.2011.2134833https://academica-e.unavarra.es/handle/2454/35950Different multiwavelength Raman fiber lasers based on a hybrid cavity set-up are proposed. The lasing schemes are based in highly birefringent photonic crystal fiber loop mirrors combined with random cavities. The Hi-Bi PCF loop mirrors are characterized by an interferometric output; whereas the random mirrors are created by cooperative Rayleigh scattering due to Raman gain. This configuration allows suppression of Rayleigh associated noise growth, while taking advantage of it as an active part of the laser cavity, enhancing the achievable gain. The proposed fiber lasers present stable operation at room temperature although different output maxima and shapes depending on the fiber loop mirror/random mirror combination.8 p.application/pdfeng© 2011 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other workFiber opticsFiber laserPhotonic crystal fibersRaman laserRayleigh scatteringRandom laserinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/openAccess