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.

• 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

• 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)

• Filter technology: TFF (Thin Film Filter)

• 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

• 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

• CWDM metro and access networks

• Linear and ring CWDM topologies

• Incremental network expansion using OADM nodes

• Fiber-scarce aggregation and distribution networks