2-Channel CWDM OADM, East–West Add/Drop, Dual Fiber, LGX
The GLOBALfiber G-COADM-2-LU-xxxx is a fully passive 2-channel CWDM Optical Add/Drop Multiplexer (OADM) designed for east–west DWDM/CWDM network topologies.
It supports dropping and adding two CWDM channels to the west and two CWDM channels to the east, enabling flexible node insertion in linear or ring-based CWDM networks without interrupting through traffic.
With its compact LGX plug-in format and dual-fiber architecture, this OADM is ideal for metro access, aggregation, and distribution networks where fiber resources are limited and incremental expansion is required.
Key Features
• 2-channel CWDM OADM (Add/Drop Multiplexer)
• East–West architecture for directional add/drop
• Dual-fiber transmission (separate Tx/Rx fibers)
• Fully passive design – no power required
• Low insertion loss on add/drop paths
• Compact LGX module, compatible with 2-slot 1U racks
• High channel isolation and optical stability
• LC connectors
Wavelength Configuration
• CWDM channels: 2 channels per node
• Standard wavelengths:
o 1470 nm / 1490 nm
• Channel spacing: 20 nm
• Channel passband: ±6.5 nm
• Operating wavelength range: 1270–1610 nm
(Other CWDM channel pairs available – see Ordering Information)
Optical Technology
• Filter technology: TFF (Thin Film Filter)
Technical Specifications
• Insertion loss (drop/add to west or east): = 1.2 dB
• Insertion loss (west ? east line pass): = 1.8 dB
• Center wavelength accuracy: ±0.05 nm
• Return loss: = 45 dB
• Directivity: = 45 dB
• Polarization mode dispersion (PMD): = 0.1 ps
• Polarization dependent loss (PDL): = 0.3 dB
Channel Isolation
• Adjacent channels: = 30 dB
• Non-adjacent channels: = 45 dB
Environmental & Mechanical Specifications
• Operating temperature: –40 °C to +85 °C
• Storage temperature: –40 °C to +85 °C
• Module format: LGX
• Dimensions (H × W × D): 190 × 200 × 39 mm
• Net weight (LGX): 0.5 kg
• Mounting: Plug-in LGX, compatible with 2-slot 1U rack
• Connectors: LC
Typical Applications
• CWDM metro and access networks
• Linear and ring CWDM topologies
• Incremental network expansion using OADM nodes
• Fiber-scarce aggregation and distribution networks