Title :
Dual-Wavelength DFB Erbium-Doped Fiber Laser With Tunable Wavelength Spacing
Author :
Villanueva, Guillermo E. ; Pérez-Millán, Pere ; Palací, Jesús ; Cruz, José L. ; Andrés, Miguel V. ; Martí, Javier
Author_Institution :
Nanophotonics Technol. Center, Univ. Politec. de Valencia, Valencia, Spain
Abstract :
A novel tunable dual-wavelength distributed-feedback fiber laser is presented. It is based on the optical resonances induced by two local phase shifts introduced in the periodic structure of an erbium-doped fiber Bragg grating. A dynamic control of the phase shifts, which are generated by piezoelectric transducers, permits the tunability of the wavelength spacing between the optical harmonics of the laser signal. The wavelength spacing is continuously tuned from 0.128 to 7 GHz. Moreover, a microwave carrier is created within such frequency tuning range by the heterodyne photodetection of the dual-wavelength laser signal.
Keywords :
Bragg gratings; distributed feedback lasers; erbium; fibre lasers; heterodyne detection; laser tuning; microwave generation; optical harmonic generation; periodic structures; JkJk:Er; distributed feedback fiber laser; erbium-doped fiber Bragg grating; frequency 0.128 GHz to 7 GHz; frequency tuning; heterodyne photodetection; laser signal; local phase shifts; microwave carrier; optical harmonics; optical resonances; periodic structure; piezoelectric transducers; tunable dual-wavelength DFB erbium-doped fiber laser; tunable wavelength spacing; Dual-wavelength laser; fiber Bragg gratings (FBGs); fiber lasers; microwave (MW) generation;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2009.2038594
