Effect of Linewidth on the Relative Intensity Noise in Random Distributed Feedback Raman Fiber Lasers
Sergio Rota-Rodrigo,
Daniel Leandro,
Giorgio Santarelli,
Manuel Lopez-Amo,
Juan Diego Ania-Castañón
Affiliations
Sergio Rota-Rodrigo
LP2N, Institut d’Optique Graduate School, CNRS, Université de Bordeaux, F-33400 Talence, France
Daniel Leandro
Institute of Smart Cities (ISC), Department of Electrical, Electronic and Communications Engineering, Public University of Navarra (UPNA), Campus de Arrosadia, 31006 Pamplona, Spain
Giorgio Santarelli
LP2N, Institut d’Optique Graduate School, CNRS, Université de Bordeaux, F-33400 Talence, France
Manuel Lopez-Amo
Institute of Smart Cities (ISC), Department of Electrical, Electronic and Communications Engineering, Public University of Navarra (UPNA), Campus de Arrosadia, 31006 Pamplona, Spain
Juan Diego Ania-Castañón
Instituto de Óptica “Daza de Valdés”, IO-CSIC, Serrano 121, 28006 Madrid, Spain
We experimentally explore the relation between spectral linewidth and RIN transfer in half-open cavity random distributed feedback Raman lasers, demonstrating for the first time the possibility of adjusting the pump-to-signal RIN transfer intensity and cut-off frequency by using spectral filtering in the reflector section. We apply this approach to a 50-km laser system, operating in the C-Band, reliant on a standard single-mode fiber. We obtained a minimum bandwidth of 13 pm, which translates into a visible RIN cut-off at 800 MHz.
