Title :
Dual-Wavelength, Linearly Polarized All-Fiber Laser With High Extinction Ratio
Author :
EL-Damak, A.R. ; Jianhua Chang ; Jian Sun ; Changqing Xu ; Xijia Gu
Author_Institution :
Dept. of Electr. & Comput. Eng., Ryerson Univ., Toronto, ON, Canada
Abstract :
We demonstrate a dual-wavelength linearly polarized all-fiber laser emitting 1- μm and 1.5- μm wavelengths with a total output power of 1.3 W. The laser consists of two pairs of fiber Bragg gratings (FBGs) fabricated on PM fibers to form a cavity and an Er/Yb co-doped fiber as a gain medium. A high extinction ratio of 23 dB is achieved using specially designed PM FBGs. The laser output has a narrow bandwidth of 26 pm at both 1057 and 1554 nm. When the dual-wavelength all-fiber laser is used to pump a PPLN crystal, the generation of mid-infrared emission at 3.3 μm is successfully demonstrated.
Keywords :
Bragg gratings; erbium; extinction coefficients; fibre lasers; infrared sources; laser cavity resonators; lithium compounds; optical fibre fabrication; optical fibre polarisation; optical pumping; ytterbium; FBGs; LiNBO3; PM FBG; PPLN crystal; codoped fiber; dual-wavelength all-fiber laser; dual-wavelength linearly polarized all-fiber laser; extinction ratio; fiber Bragg gratings; gain medium; midinfrared emission; narrow bandwidth laser output; power 1.3 W; pumping; total output power; wavelength 1 mum; wavelength 1.5 mum; wavelength 1057 nm; wavelength 1554 nm; wavelength 3.3 mum; Bragg gratings; Fiber lasers; Measurement by laser beam; Optical fiber couplers; Optical fiber polarization; Power lasers; Pump lasers; Fiber gratings; Fiber lasers;
Journal_Title :
Photonics Journal, IEEE
DOI :
10.1109/JPHOT.2013.2276991
