Spectral filtering in single-mode fibers using resonant coupling with absorbing rods
Svetlana S. Aleshkina, T.A. Kashaykina, Mikhail V. Yashkov, M. Y. Salganskii, Vladimir V. Velmiskin, Mikhail M. Bubnov, Mikhail E. Likhachev
Abstract
We investigate (both theoretically and experimentally) a method for fundamental mode spectral filtering in single-mode optical fibers using the resonant mode coupling effect. We demonstrate the possibility of controlling the spectral bandwidth of the fundamental mode suppression band through appropriate choice of fiber parameters and fiber bending. The developed technique can be very useful for the design of fiber-based spectral filters (i.e., active fibers with suppression of laser emission at undesirable wavelengths, suppression of stimulated Raman scattering).
Topics & Concepts
OpticsMaterials scienceRaman scatteringSingle-mode optical fiberMode couplingFiber laserOptical fiberPhotonic-crystal fiberBandwidth (computing)Mode volumePolarization-maintaining optical fiberCoupling (piping)RodDispersion-shifted fiberRaman spectroscopyFiber optic sensorPhysicsTelecommunicationsAlternative medicineComputer scienceMedicinePathologyMetallurgyAdvanced Fiber Optic SensorsPhotonic Crystal and Fiber OpticsAdvanced Fiber Laser Technologies