Rectangular Global Envelope Super Structured FBGs for Multiband Coherent OCDMA

We present rectangular global envelope coherent direct sequence en/decoders for wavelength division multiplexing (WDM)-optical code division multiple access applications. The device presents balanced insertion loss and sharp edges for optimum DWDM channeling. Experimental results using 5 and 1 100-GHz sub-bands en/decoders demonstrate the applicability of these devices both for broadcasting and point-to-point applications.