Title :
Gain dynamics of 14xx-nm-pumped thulium-doped fiber amplifier
Author :
Yam, Scott S H ; Kim, Jaedon ; Marhic, Michel E. ; Akasaka, Youichi ; Kazovsky, Leonid G.
Author_Institution :
Photonics & Networking Res. Lab., Stanford, CA, USA
fDate :
7/1/2004 12:00:00 AM
Abstract :
Upconversion pumping in the 14xx-nm range gives the thulium-doped fiber amplifier (TDFA) a 3-dB dynamic range of 15 dB, and transient power excursion much lower than the conventional erbium-doped fiber amplifier during dynamic wavelength add-drop, due to the energy transitions inherent to the Tm3+ ion. For specific pumping scheme and operating conditions, gain increases with increasing signal input, a behavior significantly different from conventionally optical amplifiers. This phenomenon is studied experimentally and theoretically, and promises to provide insight for gain control algorithms for TDFAs under bursty traffic conditions in a metropolitan area network environment.
Keywords :
optical communication equipment; optical fibre amplifiers; optical pumping; thulium; wavelength division multiplexing; WDM networks; dynamic wavelength add-drop; energy transitions; fiber-optic oscillators; gain control algorithms; gain dynamics; metropolitan area network environment; thulium-doped fiber amplifier; transient power excursion; upconversion pumping; Communication system traffic control; Dynamic range; Erbium-doped fiber amplifier; Gain control; Optical amplifiers; Optical fiber amplifiers; Optical pumping; Particle beam optics; Semiconductor optical amplifiers; Stimulated emission;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2004.829532
