6533b86efe1ef96bd12cb367
RESEARCH PRODUCT
Experimental study of an in-fiber acousto-optic tunable bandpass filter for single- and dual-wavelength operation in a thulium-doped fiber laser
B. Ibarra EscamillaA. Camarillo AvilésOlivier PottiezE. Hernández EscobarMiguel V. AndrésM. Durán SánchezM. Bello JiménezR. López Estopiersubject
Optical fiberMaterials scienceoptical fibers02 engineering and technology01 natural scienceslaw.invention010309 opticsLaser linewidthOpticsFiber Bragg gratingBand-pass filterlawFiber laser0103 physical sciencesInsertion lossUNESCO::FÍSICA::Ópticabusiness.industry021001 nanoscience & nanotechnologyLaserAtomic and Molecular Physics and Opticsacousto-optic interactionfiber lasersWavelength:FÍSICA::Óptica [UNESCO]0210 nano-technologybusinessdescription
A tunable single- and dual-wavelength thulium-doped all-fiber laser is demonstrated based on the implementation of an in-fiber acousto-optic tunable bandpass filter (AOTBF). The AOTBF is fabricated to be operated in the 1.9 µm region, and takes advantage of the intermodal coupling effect produced by traveling flexural acoustic waves in an optical fiber. It exhibits a 3-dB bandwidth of 2.04 nm with an insertion loss of 4.75 dB. The tuning properties of the AO device allows a continuous-wave operation with characteristics of wide tuning range (211.5 nm), narrow linewidth (50 pm) and high signal-to-noise ratio (60 dB). In the dual-wavelength regime, the laser is capable of independent tuning of each of the laser lines, achieving a tunable dual-wavelength emission that extends from 1802.67 to 1932.75 nm. A controllable wavelength spacing with minimum and maximum separations of 1.04 and 130.08 nm is obtained.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2019-01-01 |