Multiplexers (MUX)

WDM

Overview
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Reduce Bulky Cable Run Requirements and Eliminate Short Distance Limitations

It is highly desirable to reduce the number of cables required to communicate between spaces on Navy ships due to increased weight, cost and maintenance concerns. To reduce weight and expense, copper-based NTDS parallel and serial type cables can be converted to fiber optic and multiplexed using Wavelength Division Multiplexing (WDM) technology. WDM technology allows for multiple fiber optic wavelengths to be combined in a single fiber and then separated back to individual fibers at the distant end. Using Coarse WDM (CWDM) which utilizes wavelengths 20nm apart ranging from 1271 nm to 1611 nm, provides for up to 18 optical wavelengths to be combined into a single fiber. Optionally Dense WDM (DWDM) can be used allowing for up to 160 optical wavelengths.

One critical component of this conversion technology is the NTDS to WDM converter. This converter allows for the usage of Small Form-Factor Pluggable (SFP) modules allowing for CWDM and DWDM optical modules to be located in one unit. Up to 16 of these converters can be added to a 4U, 19inch rack mountable chassis. Each converter supports either a MIL-STD-1397C compliant NTDS Parallel Type A, B, C, H module which is user selectable, or a MIL-STD-1397C compliant NTDS Serial Type E or Type D channel.

Combining the NTDS to WDM converters with CWDM or DWDM multiplexors/demultiplexors allow for a compact and robust solution. Optical Line Protection (OLP) allow for switching between fibers to meet redundancy requirements and Optical Add Drop Multiplexors (OADM) can be utilized to pull off various wavelengths for areas where dropping off selected wavelengths is a requirement.

Technical Specifications
  • Rack Mount NTDS to WDM Converter:
    • 19” 4U Rack Mountable
    • Choice of up to 16 NTDS Parallel Type A,B,C, H and Serial Type D, E Channels
    • SFP Slot for Accepting CWDM or DWDM modules
    • 110/220VAC, 60Hz, Single Phase with Redundant Power Supplies
    • 0°C to 55°C Operating Temperature
    • -20°C to 70°C Storage Temperature
    • Up to 90% Humidity (non-condensing)
  • Rack Mount CWDM Mux/Demux:
    • 19” 1U Rack Mountable
    • 18 Channels
    • -5°C to 70°C Operating Temperature
    • Channel Center Wavelengths 1271 nm through 1611 nm at 20 nm spacing
    • Channel Bandwidth +/- 6.5 nm
    • Max Insertion Loss Pair, 5.2 dB
    • Min Isolation, 30.0 dB
    • Max Polarization Dependent Loss, 0.2 dB
    • Min Directivity, 50.0 dB
    • Passive
  • Rack Mount DWDM Mux/Demux:
    • 19” 1U Rack Mountable
    • 32 Channels
    • -5°C to 70°C Operating Temperature
    • Available Wavelengths, 100 GHz Wavelengths
    • Min Channel Bandwidth ITU +/- 0.11 nm
    • Max Insertion Loss Pair, 7.5 dB
    • Min Isolation, 30.0 dB
    • Max Polarization Dependent Loss, 0.4 dB
    • Min Directivity, 50.0 dB
    • Passive
  • Rack Mount OADM:
    • 19” 1U Rack Mountable
    • 18 Channels
    • -5°C to 70°C Operating Temperature
    • CWDM Available Wavelengths 1271 nm through 1611 nm at 20 nm spacing
    • DWDM Available Wavelengths, 100 GHz Wavelengths
    • Max Add/Drop Insertion Loss, 4.5 dB
    • Max Express thru Loss, 5.5 dB
    • Min Isolation, 30.0 dB
    • Max Polarization Dependent Loss, 0.1 dB
    • Min Directivity, 55.0 dB
    • Passive
  • Model Numbers
  • NW-SFP-C-16
  • NW-SFP-D-16
Accessories
  • NW-SFP-C-18
    1GB Ethernet to CWDM 16 Channel Converter
  • NW-SFP-D-18
    1GB Ethernet to DWDM 16 Channel Converter
  • NW-C-18
    CWDM 18 Channel Mux/Demux
  • NW-D-18
    DWDM 18 Channel Mux/Demux
  • NW-OLP
    Optical Light Protection Switch
  • NW-OADM-C
    CWDM 18 Channel OADM
  • NW-OADM-D
    DWDM 18 Channel OADM
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