Title :
41-nm 3-dB gain-band optical amplifier using an Er-doped core and Sm-doped inner-cladding fiber without external filters
Author :
Kim, Seungtaek ; Ryu, Uh-Chan ; Oh, K.
Author_Institution :
Dept. of Inf. & Commun., Kwangju Inst. of Sci. & Technol., South Korea
Abstract :
A new fiber structure optical fiber amplifier was reported where the core was doped with erbium (Er) and the inner-cladding was doped with samarium (Sm). Feasibility of gain control by evanescent wave interaction with an absorbing material in the inner-cladding was experimentally demonstrated. The optical amplifier using the proposed fiber resulted in the gain variation between gain peak and valley less than 2.5 dB without using external gain equalizing filters.
Keywords :
chemical vapour deposition; erbium; gain control; laser beams; laser noise; optical fibre amplifiers; optical fibre cladding; optical fibre fabrication; optical variables control; samarium; 1.5 mum; 1.53 mum; 3 dB; Er-doped core fiber; Sm-doped inner-cladding fiber; absorbing material; core; evanescent wave interaction; external gain equalizing filters; fiber structure optical fiber amplifier; gain control; gain peak; gain variation; gain-band optical amplifier; inner-cladding; optical amplifier; Erbium; Gain control; Optical amplifiers; Optical fiber amplifiers; Optical fibers; Optical filters; Optical surface waves; Samarium; Semiconductor optical amplifiers; Stimulated emission;
Journal_Title :
Photonics Technology Letters, IEEE
