Title :
Improvement of 1.57-1.61 /spl mu/m band amplification efficiency by recycling wasted backward ASE through the unpumped EDF section
Author :
Ju Han Lee ; Uh-Chan Ryu ; Namkyoo Park
Author_Institution :
Sch. of Electr. Eng., Seoul Nat. Univ., South Korea
Abstract :
A novel structure, which utilizes detrimental backward amplified spontaneous emission (ASE) as a secondary pump source is suggested for a 1.58-/spl mu/m silica-based fiber amplifier. By using the secondary pumping effect from the strong, wasted 1550-nm band ASE power in the unpumped section of the erbium-doped fiber (EDF), it was possible to achieve a considerable improvement in power conversion efficiency, increasing small signal gain by more than 4 dB.
Keywords :
erbium; laser transitions; optical communication equipment; optical fibre amplifiers; optical pumping; superradiance; wavelength division multiplexing; 1.57 to 1.61 mum; 1.58 mum; 1550 nm; amplification efficiency; backward amplified spontaneous emission; erbium-doped fiber; increasing small signal gain; power conversion efficiency; secondary pump source; silica-based fiber amplifier; unpumped EDF section; unpumped section; wasted backward ASE recycling; Bandwidth; Erbium; Erbium-doped fiber amplifier; L-band; Laboratories; Optical amplifiers; Optical fiber communication; Recycling; Silicon compounds; Wavelength division multiplexing;
Conference_Titel :
Optical Fiber Communication Conference, 1999, and the International Conference on Integrated Optics and Optical Fiber Communication. OFC/IOOC '99. Technical Digest
Conference_Location :
San Diego, CA, USA
Print_ISBN :
1-55752-582-X
DOI :
10.1109/OFC.1999.766289
