Pumping scheme optimisation of 980-nm pumped L-band EDFA associated with broadband noise as the secondary pump

• Published in: Optics communications Vol. 236; no. 1; pp. 167 - 172
• Main Authors: Adikan, F.R.M., Noor, A.S.M., Mahdi, M.A.
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 01-06-2004; Elsevier Science
• Subjects: Applied sciences; Erbium; Exact sciences and technology; Fundamental areas of phenomenology (including applications); Laser amplifiers; Liquid crystals; Optical communication systems; Optical communication systems, multiplexers, and demultiplexers; Optical materials; Optical pumping; Optics; Physics; Systems, networks and services of telecommunications; Telecommunications; Telecommunications and information theory; Transmission and modulation (techniques and equipments); Optical communication systems; Laser amplifiers; Optical pumping; Erbium; 42.60.D; 42.79.S; Laser pumping; Doped materials; Experimental device; Experimental study; Amplified spontaneous emission; Optical fiber amplifiers; Erbium-doped fiber; Lasers; Optical amplifier; Erbium additions; Gain
• ISSN: 0030-4018; 1873-0310
• DOI: 10.1016/j.optcom.2004.03.030

L-band gain improvement through usage of secondary pumping sources in the form of broadband noise (amplified spontaneous emission, ASE) is conducted. For an L-band amplifier system employing ASE to improve gain, pumping the system counter-directionally with ASE while the 980-nm pump is being used in a co-propagating configuration would yield the best overall performance in terms of gain and noise figure. For high power applications, the 980-nm and ASE sources must be counter-directionally pumped to the direction of the L-band signal. Gain improvement of 1570-nm signal in between 6 and 8.5 dB is attained at 12 mW of 980-nm pump laser.