GPON / XGS-PON + 2-Channel CWDM (1530/1550 nm) LGX Module – Dual Fiber
The GF-2C-LGX04-XGSPON is a fully passive wavelength coexistence module designed to combine GPON, XGS-PON, and two CWDM channels (1530 nm and 1550 nm) on a single fiber pair. It enables efficient fiber reuse while supporting both legacy PON services and next-generation high-bandwidth access on the same infrastructure.
Designed by GLOBALfiber, this LGX plug-in module is optimized for access and aggregation networks where gradual migration from GPON to XGS-PON is required—without service disruption or additional fibers.
The compact LGX format allows installation in a standard 4-slot 19” 1U rack and supports integration with DWDM or CWDM transport systems upstream.
Key Features
• Passive coexistence module for GPON and XGS-PON
• Integrated 2-channel CWDM (1530 nm / 1550 nm)
• Dual-fiber operation
• LGX plug-in form factor
• No power or configuration required
• Supports smooth migration from GPON to XGS-PON
• Designed for access, aggregation, and hybrid PON/WDM networks
Supported Wavelength Bands
• GPON bandpass:
o 1290–1330 nm (upstream)
o 1480–1550 nm (downstream)
• XGS-PON bandpass:
o 1260–1280 nm (upstream)
o 1575–1580 nm (downstream)
• CWDM channels:
o 1530 nm ± 7.0 nm
o 1550 nm ± 7.0 nm
Optical Performance
• Insertion loss:
o COM - GPON: < 1.5 dB
o COM - XGS-PON: < 1.5 dB
o COM - CWDM: < 1.5 dB
• Wavelength isolation:
o COM - GPON: > 30 dB
o COM - XGS-PON: > 30 dB
o COM - CWDM: > 30 dB
• Uniformity: < 0.8 dB
• Return loss: > 55 dB
• Directivity: > 55 dB
• Polarization dependent loss (PDL): < 0.3 dB
• Polarization mode dispersion (PMD): < 0.2 ps
• Maximum optical power handling: < 300 mW
Mechanical & Environmental Specifications
• Connector interfaces:
o GPON / XGS-PON / OLT (COM): SC/UPC
o CWDM ports: LC/UPC
• Operating temperature: -40 °C to +85 °C
• Storage temperature: -40 °C to +85 °C
• Operating humidity: 5–90 % RH
• Dimensions:
o LGX module: 215 × 150 × 20 mm
o 1U rack: 440 × 160 × 44 mm
• Net weight:
o LGX module: ~ 0.5 kg
o 1U 4-slot rack: ~ 2.5 kg
Form Factor & Installation
• LGX plug-in module
• Fits standard 19” 4-slot 1U rack
• Front-accessible ports for easy installation and maintenance
Typical Applications
• GPON to XGS-PON migration projects
• Fiber access and aggregation networks
• Coexistence of multiple PON technologies
• Hybrid PON + CWDM / DWDM architectures
• Broadband, enterprise access, and 5G fronthaul