Dual-Wavelength DFB Erbium-Doped Fiber Laser With Tunable Wavelength Spacing

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 piezoelect...

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Veröffentlicht in:	IEEE photonics technology letters 2010-02, Vol.22 (4), p.254-256
Hauptverfasser:	Villanueva, Guillermo E., Perez-Millan, Pere, Palaci, Jesus, Cruz, Jose L., Andres, Miguel V., Marti, Javier
Format:	Artikel
Sprache:	eng
Schlagworte:	Conferences Dual-wavelength laser Erbium-doped fiber lasers fiber Bragg gratings (FBGs) Fiber lasers Fiber optics Laser tuning Lasers Masers microwave (MW) generation Optical control Optical fibers Optical harmonic generation Optical mixing Periodic structures Phase shift Resonance Signal generators Tunable circuits and devices Tuning Wavelengths
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Beschreibung
Zusammenfassung:	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.
ISSN:	1041-1135 1941-0174
DOI:	10.1109/LPT.2009.2038594