Abstract

We present two novel 1*N dynamic optical couplers that are based on Dammann gratings to achieve dynamic optical coupled technology. One is presented by employing a specially designed Dammann grating that consists of the Dammann-grating area and the blank area. The other is developed by using two complementary even-numbered Dammann gratings. The couplers can achieve the function conversion between a beam splitter and a combiner according to the modulation of the gratings. We have experimentally demonstrated 1*8 dynamic optical couplers at the wavelength of 1550 nm. The experimental results and the analyses are reported in detail.

© 2005 Chinese Optics Letters

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