Title :
Development of an efficient praseodymium-doped fiber amplifier
Author :
Nishida, Yoshiki ; Yamada, Makoto ; Kanamori, Terutoshi ; Kobayashi, Kenji ; Temmyo, Jiro ; Sudo, Shoichi ; Ohishi, Yasutake
Author_Institution :
NTT Opto-Electron. Labs., Ibaraki, Japan
fDate :
8/1/1998 12:00:00 AM
Abstract :
This paper describes the development of an efficient praseodymium-doped fluoride fiber amplifier (PDFA) using newly developed PbF2-InF3-based fluoride single-mode fiber. First, the spectroscopic properties of Pr3+ in PbF2-InF 3-based and ZrF4-based fluoride glass are compared and then the fabrication of high-NA PbF2-InF3-based fluoride single-mode fiber is presented. The gain coefficients obtained with the developed fiber are 0.36 dB/mW with a forward pumping scheme and 0.4 dB/mW with a bidirectional pumping scheme. We use this newly developed fiber to construct two types of an efficient PDFA module. We realized a 19-in rack size PDFA module with a master oscillator/power amplifier laser diode (MOPA-LD) and a plug-in type PDFA module with a wavelength-stabilized 1.017-μm LD and describe their amplification characteristics
Keywords :
fibre lasers; impurity absorption spectra; infrared spectra; laser frequency stability; laser modes; modules; optical communication equipment; optical pumping; praseodymium; 1.017 mum; 19 in; PbF2-InF3-based fluoride glass; PbF2-InF3-based fluoride single-mode fiber; PbF2-InF3:Pr; ZrF4-based fluoride glass; amplification characteristics; bidirectional pumping scheme; efficient PDFA module; efficient praseodymium-doped fiber amplifier; forward pumping scheme; gain coefficients; high-NA PbF2-InF3-based fluoride single-mode fiber; master oscillator/power amplifier laser diode; plug-in type PDFA module; praseodymium-doped fluoride fiber amplifier; spectroscopic properties; wavelength-stabilized 1.017-μm LD; Diode lasers; Glass; Optical amplifiers; Optical fiber amplifiers; Optical fibers; Optical materials; Optical pumping; Oscillators; Power amplifiers; Stimulated emission;
Journal_Title :
Quantum Electronics, IEEE Journal of
