Title :
Pr/sup 3+/-doped fluoride fiber amplifier module pumped by a fiber coupled master oscillator/power amplifier laser diode
Author :
Yamada, M. ; Kanamori, T. ; Ohishi, Yasutake ; Shimizu, M. ; Terunuma, Y. ; Sato, Seiki ; Sudo, S.
Author_Institution :
NTT Opto-Electron. Labs., Ibaraki, Japan
fDate :
3/1/1997 12:00:00 AM
Abstract :
We constructed the first Pr/sup 3+/-doped fluoride fiber amplifier (PDFA) module pumped by a fiber-coupled master oscillator/power amplifier laser diode (MOPA-LD) operating at 1.017 μm. The maximum signal gain and noise figure were 30.5 and 5.5 dB, respectively. An output power of 18 dBm was achieved at an input signal power of 0 dBm. Furthermore, we showed that the use of MOPA-LD pumping, rather than conventional Nd-YLF laser pumping, makes it possible to halve the length of the Pr/sup 3+/-doped fluoride required in the amplifier module and also allows a broader spectral bandwidth to be achieved.
Keywords :
fibre lasers; laser noise; optical communication equipment; optical pumping; praseodymium; spectral line breadth; 1.017 mum; 30.5 dB; LiYF4:Nd; MOPA-LD pumping; Nd-YLF laser pumping; Pr/sup 3+/-doped fluoride fiber amplifier module; YLF:Nd; amplifier module; broader spectral bandwidth; fiber coupled master oscillator/power amplifier laser diode pumping; input signal power; maximum signal gain; noise figure; output power; Diode lasers; Fiber lasers; Laser excitation; Optical fiber amplifiers; Optical fiber devices; Optical fibers; Optical pumping; Oscillators; Power amplifiers; Pump lasers;
Journal_Title :
Photonics Technology Letters, IEEE
