Demonstration of a full-duplex bidirectional spectrally interleaved OCDMA/DWDM system

Abstract

Abstract-We report on a full-duplex bidirectional spectrally interleaved optical code-division multiple access/dense wavelength-division-multiplexing demonstration based on 16-b 20-Gb/s quarternary phase coding gratings. Eight 622-Mb/s coded channels are transmitted in each direction and error-free performance obtained over a transmission distance of 44 km of nonzero dispersion shifted fiber.

Optical Cyclic Wavelength Shifter Using a Dual-Band Polymer Holographic Grating

“…3,4) To make optical communication systems more applicable to networks and switching, rapidly tunable codes and their related code generators are required. [5][6][7][8] Although there have been research studies of cyclic filters, routers and encoders using two successive arrayed waveguide gratings, 9,10) the device proposed in this paper can provide a simpler construction. In this paper, we propose a tunable cyclic wavelength shifter that is applicable to various OCDMA systems or various optical networks by use of superimposed polymer holographic gratings (PHGs).…”