We demonstrate a seven-core erbium-doped fiber amplifier in which all the cores were pumped simultaneously by a side-coupled tapered multimode fiber. The amplifier has multicore (MC) MC inputs and MC outputs, which can be readily spliced to MC transmission fiber for amplifying space division multiplexed signals. Gain over 25 dB was obtained in each of the cores over a 40-nm bandwidth covering the C-band.
© 2014 Optical Society of America
Fiber Optics and Optical Communications
Original Manuscript: October 10, 2013
Revised Manuscript: December 8, 2013
Manuscript Accepted: December 26, 2013
Published: February 11, 2014
Kazi S. Abedin, John M. Fini, Taunay F. Thierry, Benyuan Zhu, Man F. Yan, Lalit Bansal, Frank V. Dimarcello, Eric M. Monberg, and David J. DiGiovanni, "Seven-core erbium-doped double-clad fiber amplifier pumped simultaneously by side-coupled multimode fiber," Opt. Lett. 39, 993-996 (2014)