We demonstrate that solitons are not essential for the operation of the soliton laser. The external cavity employed contains an optical fiber with negative group-delay dispersion and therefore does not support bright solitons. Thus the improved mode locking cannot be attributed to the injection of an N = 2 soliton.
© 1988 Optical Society of America
Original Manuscript: March 15, 1988
Manuscript Accepted: August 8, 1988
Published: November 1, 1988
K. J. Blow and B. P. Nelson, "Improved mode locking of an F-center laser with a nonlinear nonsoliton external cavity," Opt. Lett. 13, 1026-1028 (1988)