Title :
Upconversion pumped thulium-doped fluoride fiber amplifier and laser operating at 1.47 μm
Author :
Komukai, Tetsuro ; Yamamoto, Takashi ; Sugawa, Tomoki ; Miyajima, Yoshiaki
Author_Institution :
Opt. Transmission Line Lab., NTT Access Network Syst. Labs., Ibaraki, Japan
fDate :
11/1/1995 12:00:00 AM
Abstract :
A 1.064-μm band upconversion pumped Tm3+-doped fluoride fiber amplifier and a laser both operating at 1.47 μm are investigated in detail. The two devices are based on the 3F 4→3H4 transition in a trivalent thulium ion, which is a self-terminating system. When pumped at 1.064 μm, the amplifier has a gain of over 10 dB from 1.44 to 1.51 μm and a low-noise characteristic. Also, the fiber laser generates a high-output power of over 100 mW with a slope efficiency of 59% at around 1.47 μm. These levels of performance will be important for optical communication systems
Keywords :
aluminium compounds; barium compounds; fibre lasers; lanthanum compounds; optical communication equipment; optical pumping; thulium; zirconium compounds; 1.064 mum; 1.44 to 1.51 mum; 1.47 mum; 100 mW; 3F4→3H4 transition; ZBLAN:Tm; ZrF4-BaF2-LaF3-AlF3-NaF:Tm; amplifier gain; fiber laser; high-output power; low-noise characteristic; optical communication systems; self-terminating system; slope efficiency; thulium-doped fluoride fiber amplifier; thulium-doped fluoride fiber laser; trivalent thulium ion; upconversion pumped; Fiber lasers; Laser excitation; Laser transitions; Low-noise amplifiers; Optical amplifiers; Optical fiber amplifiers; Optical fiber communication; Optical fiber devices; Power lasers; Pump lasers;
Journal_Title :
Quantum Electronics, IEEE Journal of
