Abstract
A fiber Bragg grating bandpass filter with tailored refractive-index modulation is investigated. The writing method includes a position weighting technique, which provides flexible and accurate control of the index modulation along the fiber. This weighting is accomplished by adjusting the positions of a large number of overlapping subgratings to control the local grating strength. A 10-cm grating with a truncated refractive-index modulation function was written and characterized with this method, showing good agreement with simulations. These types of filter are well suited for wavelength-division-multiplexing applications and can be made to have steep edges, low sidelobes, large bandwidth, and low stopband ripple.
© 1997 Optical Society of America
Full Article | PDF ArticleMore Like This
J. Skaar, B. Sahlgren, P.-Y. Fonjallaz, H. Storøy, and R. Stubbe
Opt. Lett. 23(12) 933-935 (1998)
Christoph Greiner, Thomas W. Mossberg, and Dmitri Iazikov
Opt. Lett. 29(8) 806-808 (2004)
S. Y. Li, N. Q. Ngo, S. C. Tjin, P. Shum, and J. Zhang
Opt. Lett. 29(1) 29-31 (2004)