Second-order nonlinear susceptibility gratings are induced in optical fibers by mode interference of high-intensity blue light in the presence of an external dc electric poling field. As a result, efficient second-harmonic generation can be obtained for any infrared design wavelength.
© 1989 Optical Society of America
Original Manuscript: November 30, 1988
Manuscript Accepted: May 3, 1989
Published: July 15, 1989
M. E. Fermann, L. Li, M. C. Farries, L. J. Poyntz-Wright, and L. Dong, "Second-harmonic generation using gratings optically written by mode interference in poled optical fibers," Opt. Lett. 14, 748-750 (1989)