Title :
All-optical tunable comb filters using ytterbium doped fibers and an LPG pair
Author :
Yune Hyoun Kim ; Bok Hyeon Kim ; Swook Hann ; Young-Eun Im ; Jung Woon Lim ; Jong-Sup Kim ; Jeong Ho Kim ; Ju Young Lim ; Won-Taek Han
Author_Institution :
Laser-IT Res. Center, KOPTI, Gwangju, South Korea
fDate :
June 30 2013-July 4 2013
Abstract :
We have demonstrated a new type all-optical tunable comb filter by using a long-period fiber gratings(LPG) pair spliced with an ytterbium doped fiber. When the 25.5cm long ytterbium doped fiber was used with the ytterbium doping concentration of ~0.82at%, the wavelength channel spacing and the isolation between channels were 0.7nm and 16-21dB, respectively, between 1545nm and 1555nm. Also, the optical comb filter was tuned up to `1.53π´ phase shift at the launched pump power of 56mW with the LD at 976nm.
Keywords :
channel spacing; diffraction gratings; doping profiles; laser tuning; optical fibre fabrication; optical fibre filters; optical pumping; semiconductor lasers; splicing; ytterbium; LPG pair; all-optical tunable comb filters; channel isolation; phase shift; power 56 mW; pump power; size 25.5 cm; spliced long-period fiber grating pair; wavelength 1545 nm; wavelength 1555 nm; wavelength 976 nm; wavelength channel spacing; ytterbium doped fibers; ytterbium doping concentration; Optical fiber communication; Optical fiber devices; Optical fiber filters; Optical fiber polarization; Optical pumping; Ytterbium;
Conference_Titel :
OptoElectronics and Communications Conference held jointly with 2013 International Conference on Photonics in Switching (OECC/PS), 2013 18th
Conference_Location :
Kyoto
