Title :
Independent control of EDFA gain shape and magnitude using excited-state trapping
Author :
Yadlowsky, Michael J.
Author_Institution :
Div. of Sci. & Technol., Corning Inc., NY, USA
fDate :
5/1/1999 12:00:00 AM
Abstract :
Controlled use of excited-states of erbium are used to decouple the magnitude and shape of the gain spectrum of an erbium-doped fiber amplifier (EDFA) containing a low phonon energy glass. This makes it possible to operate a single EDFA at multiple gains without the gain flatness degradation referred to as dynamic gain-tilt. Dynamic gain-tilt free operation is demonstrated in the long-wavelength portion of the erbium gain spectrum using an erbium-doped ZBLAN fiber.
Keywords :
aluminium compounds; barium compounds; erbium; excited states; lanthanum compounds; optical communication equipment; optical fibre amplifiers; sodium compounds; zirconium compounds; EDFA gain shape; Er-doped fiber amplifier; ZBLAN:Er; ZrF4-BaF2-LaF3-AlF3-NaF:Er; dynamic gain-tilt; erbium gain spectrum; erbium-doped ZBLAN fiber; erbium-doped fiber amplifier; excited-state trapping; gain flatness degradation; gain spectrum; independent control; long-wavelength portion; low phonon energy glass; magnitude; multiple gains; Erbium; Erbium-doped fiber amplifier; Glass; Metastasis; Optical amplifiers; Optical attenuators; Optical fiber amplifiers; Phonons; Shape control; Stimulated emission;
Journal_Title :
Photonics Technology Letters, IEEE
