Title :
Efficient PDFA module using high-NA PbF2/InF3-based fluoride fiber
Author :
Nishida, Y. ; Kanamori, T. ; Ohishi, Yasutake ; Yamada, M. ; Kobayashi, K. ; Sudo, S.
Author_Institution :
NTT Opto-Electron. Labs., Ibaraki, Japan
fDate :
3/1/1997 12:00:00 AM
Abstract :
The highest reported single-pass gain coefficient of 0.36 dB/mW has been achieved using a newly developed Pr/sup 3+/-doped high-NA PbF2/InF3-based fluoride fiber, with a /spl Delta/n of 6.6%, a core diameter of 1.2 μm and a transmission loss of 250 dB/km at 1.2 μm. This fiber was used to construct an efficient PDFA module with a MOPA-LD. A small-signal net gain of 22.5 dB was achieved at 1.30 μm with a pump power of 23m mW.
Keywords :
fibre lasers; indium compounds; infrared sources; laser transitions; lead compounds; optical communication equipment; optical fibre losses; optical pumping; praseodymium; 1.2 mum; 1.3 mum; 22.5 dB; 238 mW; MOPA-LD; PDFA module; PbF/sub 2/-InF/sub 3/:Pr; PbF/sub 2//InF/sub 3/-based fluoride fiber; Pr/sup 3+/-doped PbF/sub 2/-InF/sub 3/ based fluoride fiber; core diameter; high-NA; optical fibre amplifiers; pump power; single-pass gain coefficient; small-signal net gain; transmission loss; Gain; Glass; Optical fiber amplifiers; Optical fiber devices; Optical fiber losses; Optical fibers; Optical materials; Preforms; Propagation losses; Spectroscopy;
Journal_Title :
Photonics Technology Letters, IEEE
