We can introduce chirping, or a variation in the periodicity of a Bragg grating, into an optical fiber by writing gratings on curved optical fibers. By precisely specifying the curvature, we can obtain linear, quadratic, and square-root chirped gratings. Experimental and numerical verifications of the relationships between curvature and grating characteristics are presented.
© 1995 Optical Society of America
Q. Zhang, D. A. Brown, L. J. Reinhart, and T. F. Morse, "Linearly and nonlinearly chirped Bragg gratings fabricated on curved fibers," Opt. Lett. 20, 1122-1124 (1995)