Title :
1.3-μm Pr-doped In-Ga-based fluoride fiber amplifiers pumped by grating-fiber-pigtailed 0.98-μm-band laser diodes with a detuned wavelength of 1 μm
Author :
Isshiki, K. ; Kubota, M. ; Kuze, Y. ; Yamaguchi, S. ; Watanabe, H. ; Kasahara, K.
Author_Institution :
Mitsubishi Electr. Corp., Kanagawa, Japan
Abstract :
At most efficient pump wavelength, a praseodymium-doped In-Ga-based fluoride fiber is directly pumped by four 0.98-μm-band laser diodes. These lasing wavelengths are detuned from 0.98 to 1 μm by external selective optical feedback from fiber grating reflectors. Maximum signal output power of +13.5 dBm is obtained at 1.296 μm. Four-wavelength multiplexed signals at 1.296-1.311 μm are amplified with a deviation of gain less than 1.9 dB. By using the amplifier as a power booster, data of 2.5 Gb/s is successfully transmitted more than 100 km.
Keywords :
diffraction gratings; fibre lasers; infrared sources; laser feedback; laser transitions; laser tuning; optical communication equipment; optical pumping; praseodymium; 0.98 mum; 1 mum; 1.296 mum; 1.296 to 1.311 mum; 1.3 mum; 100 km; 2.5 Gbit/s; Pr-doped In-Ga-based fluoride fiber amplifiers; detuned wavelength; efficient pump wavelength; external selective optical feedback; fiber grating reflectors; four-wavelength multiplexed signals; grating-fiber-pigtailed 0.98-/spl mu/m-band laser diodes; laser pumping; lasing wavelength detuning; maximum signal output power; power booster; praseodymium-doped In-Ga-based fluoride fiber; Diode lasers; Fiber gratings; Laser excitation; Light sources; Optical feedback; Optical fiber amplifiers; Optical fiber polarization; Optical fibers; Optical pumping; Power amplifiers;
Journal_Title :
Photonics Technology Letters, IEEE
