Title :
Gain tilt control of L-band erbium-doped fiber amplifier by using a 1550-nm band light injection
Author :
Hwang, Seongtaek ; Cho, Kyuman
Author_Institution :
Opt. Commun. Res. Group, Samsung Electron., Kyungki-Do, South Korea
Abstract :
In this letter, we demonstrate a new method to control gain tilt in long wavelength erbium-doped fiber amplifiers by using an external light source in 1550-nm range (called control source). The wavelength or its input power is adjusted to reduce gain tilt. The tilted gain is diminished from 7.18 to 0.07 dB by adjusting control source wavelength, and from 9.95 to 0.62 dB by adjusting control source input power in a 1570-1590-nm signal wavelength range.
Keywords :
erbium; laser noise; laser transitions; optical communication equipment; optical fibre amplifiers; wavelength division multiplexing; 1550-nm band light injection; 1570 to 1590 nm; L-band erbium-doped fiber amplifier; control source; control source input power; control source wavelength; external light source; gain tilt control; input power; long wavelength erbium-doped fiber amplifiers; signal wavelength range; Absorption; Bandwidth; Communication system control; Erbium-doped fiber amplifier; L-band; Light sources; Lighting control; Noise figure; Optical fiber communication; Wavelength division multiplexing;
Journal_Title :
Photonics Technology Letters, IEEE
