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Description
The core of a DWDM application is the passive MUX/DEMUX unit. DWDM stands for Dense Wavelength Division Multiplexing and allows for very high concentration of channels on a single fiber circuit. Using a 100GHz spacing grid for channels results in 80 separate channels available in the 1550nm window.
We do provide AAWG (Athermal AWG) DWDM mux/demuxes, in either fixed 1RU rack 19" format (as shown in above picture) or LGX or no housing modules format. AAWG DWDM technology has allowed full use of the bandwidth a dark fiber can offer.
Due to the fixed insertion loss, number of channels is no more a concern. Thus we see deployments going usually for 40 channels, giving ample provisioning of future bandwidth.
The RB1-DWDM-AAWG-21 is a 40 channels DWDM AAWG mux/demux simplex path filter, covering all ITU 100GHz grid channels 21 to 60, with LC/UPC connectors.
| Parameters | 1:40 Mux/Demux | |
| Center Wavelength (nm) | 1529.55~1560.61 | |
| Passband (nm) | ITU±0.22 | |
| Operating Wavelength (nm) | ITU 100GHz grid | |
| Fiber Type | SMF-28e with 0.9mm Loose tube | |
| IL (dB) | ≤5.5 | |
| Isolation (dB) | Adjacent Channel | ≥25 |
| Non-Adjacent Channel | ≥30 | |
| Ripple (dB) | ≤0.75 | |
| PDL (dB) | ≤0.5 | |
| PMD (ps) | ≤0.5 | |
| RL (dB) | ≥45 | |
| Directivity (dB) | ≥50 | |
| Maximum Optical Power (mw) | 300 | |
| Fiber length(m) | 1.0±0.05 | |
| Operating Temperature (°C) | -5～70 | |
| Storage Temperature (°C) | -40～85 | |
| Package Dimension (mm) | 19” 1U Rack-Mount | |
| Connector Type | LC/UPC | |
AAWG DWDM mux/demuxes are available in 40, 48 or 80 channels. This is a 40 channels simplex DWDM filter. In a simplex configuration (like the one available on this page), two wavelengths must be used for a single duplex channel, thus the total filter capacity is halved, but the fiber requirements only demand for a single strand of fiber.
Given the large amount of channels that can be active through an AAWG mux/demux, single strand fiber connections are a viable solution for crowded fiber optic segments. Options for monitoring ports and/or 1310nm pass through port are available on request, please contact us for such choices.
To assure communications over the DWDM wavelengths special DWDM SFP modules must be used.
Additional information on DWDM mux/demux: 
RB-DWDM filters specifications table
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