We highlight two important aspects related to a mathematical modeling of pulsed fiber lasers with long and ultra-long ring cavity -impact of an initial noise and a cavity length on generation of single optical pulses. Using as an example a simple scalar model of a ring fiber laser that describes the radiation build-up from noise and the following intra-cavity pulse dynamics during a round trip we study dependence of generated pulse characteristics on the resonator length in the range from 30 m up to 2 km.
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This paper was published in Optics Express and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-21-10-12942. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.
The authors acknowledge the financial support provided by the European Research Council, the EPSRC, the Leverhulme Trust, FP7 Marie Curie project IRSES and the Ministry of Education and Science of the Russian Federation.
Yarutkina, I. A., Shtyrina, O. V., Fedoruk, M. P., & Turitsyn, S. K. (2013). Numerical modeling of fiber lasers with long and ultra-long ring cavity. Optics Express, 21(10), 12942-12950. https://doi.org/10.1364/OE.21.012942