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
(050.1380) Diffraction and gratings : Binary optics
(060.1810) Fiber optics and optical communications : Buffers, couplers, routers, switches, and multiplexers
(230.1360) Optical devices : Beam splitters
(230.1950) Optical devices : Diffraction gratings
Caihui Di and Changhe Zhou, "1*N dynamic optical coupler based on Dammann gratings," Chin. Opt. Lett. 3, S275-S276 (2005)