The GLOBALfiber G-CMUX-WB01-3961 is a fully passive single-fiber CWDM MUX/DEMUX designed to combine one BiDi 1310/1550 nm channel with three CWDM channels (six wavelengths total) on a single optical fiber. Deployed in matched A-Side / B-Side pairs, the system enables efficient bidirectional point-to-point transmission, maximizing fiber utilization in access and aggregation networks. Its compact LGX plug-in format supports installation in a 2-slot 1U rack, making it ideal for space-constrained environments and fiber-scarce deployments.

• Single-fiber CWDM MUX/DEMUX

• 1 BiDi channel (1310/1550 nm) + 3 CWDM channels (6 wavelengths)

• Bidirectional transmission using A-Side / B-Side pairing

• Fully passive design – no power required

• Compact LGX module, compatible with 2-slot 1U racks

• Low insertion loss and high channel isolation

• LC/UPC connectors

Wavelength Configuration

BiDi Service Channel

• 1310 nm / 1550 nm (single-fiber bidirectional)

CWDM Channels (20 nm spacing)

• Side A

o RX: 1391 nm / 1471 nm / 1591 nm

o TX: 1411 nm / 1491 nm / 1611 nm

• Side B

o RX: 1411 nm / 1491 nm / 1611 nm

o TX: 1391 nm / 1471 nm / 1591 nm

• Filter technology: TFF (Thin Film Filter)

• Channel spacing: 20 nm

• Channel passband: ±6.5 nm

• Insertion loss: = 2.0 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

• 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

• LGX dimensions (H × W × D): 190 × 200 × 39 mm

• Net weight (LGX): 0.5 kg

• Rack option: 2-slot 1U rack (440 × 230 × 44 mm, 1.5 kg)

• CWDM access and aggregation networks

• Single-fiber point-to-point links

• Coexistence of legacy 1310/1550 nm services with CWDM

• Data centers, broadcast & TV, cloud, finance, and public infrastructure