We demonstrate parallel fabrication of seven fiber distributed feedback (DFB) lasers in a hexagonally arrayed multicore core Er doped fiber with 40 μm core spacing. DFB grating cavities 8 cm long and operating near 1545 nm were fabricated with a single UV inscription exposure. We observed dual polarization, single longitudinal mode operation with a linewidth below 300 kHz for each laser.
© 2012 Optical Society of America
Fiber Optics and Optical Communications
Original Manuscript: July 6, 2012
Manuscript Accepted: July 25, 2012
Published: September 20, 2012
P. S. Westbrook, K. S. Abedin, T. F. Taunay, T. Kremp, J. Porque, E. Monberg, and M. Fishteyn, "Multicore fiber distributed feedback lasers," Opt. Lett. 37, 4014-4016 (2012)