Title :
Tunable Passively
-switched Erbium-Doped Fiber Laser With Carbon Nanotubes as a Saturable Absorber
Author :
Zhou, Da-Peng ; Wei, Li ; Dong, Bo ; Liu, Wing-Ki
Author_Institution :
Dept. of Phys. & Astron., Univ. of Waterloo, Waterloo, ON, Canada
Abstract :
An all-fiber tunable passively Q-switched erbium-doped fiber (EDF) laser is presented. Saturable absorbers are constructed by optically driven deposition of single-wall carbon nanotubes on fiber connectors. A low pump threshold of 11.1 mW is achieved. Self-mode-locking effect is also observed, and it could be suppressed by splicing an extra unpumped EDF into the laser ring cavity. The laser can be tuned by applying axial strain on the fiber Bragg grating which serves as a narrowband external mirror of the cavity.
Keywords :
Bragg gratings; Q-switching; carbon nanotubes; erbium; fibre lasers; laser cavity resonators; laser mirrors; laser mode locking; laser tuning; optical fibres; optical pumping; optical saturable absorption; ring lasers; splicing; C; JkJk:Er; axial strain; carbon nanotubes; erbium-doped fiber laser; fiber Bragg grating; fiber connectors; laser ring cavity; laser tuning; low pump threshold; narrowband external mirror; passive Q-switching; power 11.1 mW; saturable absorber; self-mode-locking effect; splicing; $Q$-switching; Carbon nanotubes; fiber Bragg grating (FBG); tunable laser;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2009.2035325