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D-Series DWDM-MUX/DEMUX
Overview
The DWDM band can be divided into many bands, but the most used is the C-band (1530nm – 1565nm) where you have the lowest fiber attenuation and where standard optical EDFA amplifiers can be used. Different channel grids are defined by ITU-T in recommendation G.692.1 and the actual selection is based on a balance of e.g. cost, modulation techniques and bit/baud rates.
A channel spacing of 100GHz is perhaps the most commonly used in the industry since the cost profile of the involved components (optical transceivers, filters etc.) are lower as compared to 50GHz components. High capacity links will however require denser channel grids and also extend into the adjacent L-band (1565nm –1625nm) to provide additional channels.
The DWDM-Series filters are focused on the 100GHz grid technology to provide a cost and capacity profile that is optimized for metro and access applications.
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