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Design of equalized ROADMs devices with Flexible Bandwidth Based on LCoS Technology M nica Carrero Mora, Alfredo Martin Minguez , Paloma R. Horche, Abstract This paper describes the theory, Design , applications and performance of a new Reconfigurable Add-drop Multiplexer (ROADM) with flexible bandwidth allocation. The device can address several wavelengths at the input to four output fibers, according to the holograms stored in a SLM (Spatial Light Modulator), where all the outputs are equalized in power.
tunable filter with an operating wavelength range AX=X(n=0)-X(n=N/2) and a central wavelength channel for the filter, X0 is obtained for n = N/4 from (4). The 3dB passband width, BW, for each wavelength channel tuned is limited by the output optical fiber characteristics and OUT • BW=12.5GHz Xref(12.5GHz| BW=25GHz Xref(25QHz) BW=50GHz Xref(50GHz)
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