The PON Coexistence Element (CEx) module enables multiple services—including GPON, XG(S)-PON, NG-PON2, OTDR, and other current or future technologies—to operate simultaneously over a single fiber using wavelength multiplexing. It provides a smooth and cost-effective upgrade path to next-generation PON services without the need to replace existing infrastructure.
Engineered with thin-film filter (TFF) technology, FS CEx features a plug-and-play design compatible with FS FMU chassis, holding up to 2 modules per 1U rack. Operating across a broad 1260–1660nm operating range, it delivers low insertion loss, high isolation, and excellent optical stability, ensuring reliable multi-service transmission and future-ready scalability.
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P/N:FMU-WDM43O
SKU:157398
US$330.00
Product Highlights
Passive Solution for Seamless PON Upgrade over Existing Infrastructure
Enable GPON/XG(S)-PON/NG-PON2/OTDR coexistence on a Single Fiber
≤0.8dB IL and ≥30dB Isolation for High-performance Multi-Service Transmission
Customizable Housing and Port Configurations for Various Network Scenarios
FMU-WDM43O, PON Coexistence Element (CEx) WDM for GPON/XG(S)-PON/NG-PON2/OTDR, SC/APC, FMU Plug-in Module
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Connectivity Solutions
Features
Cost-Effective PON Coexistence for Seamless Network Upgrade
PON Coexistence Element (CEx) module uses TFF technology to combine GPON, XG(S)-PON, and NG-PON2 over existing fiber, enabling smooth network upgrades and future scalability.
Multi-Service Coexistence on a Single Fiber
This CEx module enables the coexistence of GPON, XG(S)-PON, NG-PON2, and OTDR signals over a single fiber by assigning specific wavelengths to each port. With high integration and clear functionality, it simplifies multi-service access and centralized control.
High-Performance Optics Across the Full Operating Spectrum
Utilizing TFF thin-film filter technology, the module offers low insertion loss, high isolation, and excellent return loss to ensure stable multi-wavelength transmission and reliable service coexistence.
Modular FMU-Compatible Design for Easy Deployment
Plug-and-play FMU module with rugged design integrates smoothly into FS FMU chassis, simplifying installation and improving rollout efficiency.
Flexible Customization for Diverse Deployment Needs
FS CEx modules offer flexible customization across wavelength configuration, housing and connector types to fit various network architectures and service combinations.
Port | GPON/XG(S)-PON/NG-PON2/OTDR | GPON/XG(S)-PON/NG-PON2/CATV | GPON/XG(S)-PON/NG-PON2/CATV/OTDR |
Operating Wavelength | 1260~1660nm | 1260~1603nm | 1260~1660nm |
Connector | SC/APC | SC/APC | SC/APC |
Insertion Loss | GPON ≤0.8dB
XG(S)-PON ≤1.1dB NG-PON2 ≤1.4dB OTDR ≤1.7dB | GPON ≤0.8dB
XG(S)-PON ≤1.1dB NG-PON2 ≤1.4dB CATV ≤1.7dB | GPON ≤0.8dB
XG(S)-PON ≤1.1dB NG-PON2 ≤1.4dB CATV ≤1.7dB OTDR ≤2.0dB |
Isolation | GPON ≥30dB
XG(S)-PON ≥30dB NG-PON2 ≥30dB OTDR ≥15dB | GPON ≥30dB
XG(S)-PON ≥30dB NG-PON2 ≥30dB CATV ≥30dB | GPON ≥30dB
XG(S)-PON ≥30dB NG-PON2 ≥30dB CATV ≥30dB OTDR ≥15dB |
Return Loss | ≥ 45dB | ≥ 45dB | ≥ 45dB |
Passband Ripple | ≤ 0.3dB | ≤ 0.3dB | ≤ 0.3dB |
Directivity | ≥ 50dB | ≥ 50dB | ≥ 50dB |
Polarization Dependent Loss | ≤ 0.2dB | ≤ 0.2dB | ≤ 0.2dB |
Polarization Mode Dispersion | ≤ 0.2ps | ≤ 0.2ps | ≤ 0.2ps |
Power Handling | ≤ 500mW | ≤ 500mW | ≤ 500mW |
Port
GPON/XG(S)-PON/NG-PON2/OTDR
GPON/XG(S)-PON/NG-PON2/CATV
GPON/XG(S)-PON/NG-PON2/CATV/OTDR
Operating Wavelength
1260~1660nm
1260~1603nm
1260~1660nm
Connector
SC/APC
SC/APC
SC/APC
Insertion Loss
GPON ≤0.8dB
XG(S)-PON ≤1.1dB
NG-PON2 ≤1.4dB
OTDR ≤1.7dB
XG(S)-PON ≤1.1dB
NG-PON2 ≤1.4dB
OTDR ≤1.7dB
GPON ≤0.8dB
XG(S)-PON ≤1.1dB
NG-PON2 ≤1.4dB
CATV ≤1.7dB
XG(S)-PON ≤1.1dB
NG-PON2 ≤1.4dB
CATV ≤1.7dB
GPON ≤0.8dB
XG(S)-PON ≤1.1dB
NG-PON2 ≤1.4dB
CATV ≤1.7dB
OTDR ≤2.0dB
XG(S)-PON ≤1.1dB
NG-PON2 ≤1.4dB
CATV ≤1.7dB
OTDR ≤2.0dB
Isolation
GPON ≥30dB
XG(S)-PON ≥30dB
NG-PON2 ≥30dB
OTDR ≥15dB
XG(S)-PON ≥30dB
NG-PON2 ≥30dB
OTDR ≥15dB
GPON ≥30dB
XG(S)-PON ≥30dB
NG-PON2 ≥30dB
CATV ≥30dB
XG(S)-PON ≥30dB
NG-PON2 ≥30dB
CATV ≥30dB
GPON ≥30dB
XG(S)-PON ≥30dB
NG-PON2 ≥30dB
CATV ≥30dB
OTDR ≥15dB
XG(S)-PON ≥30dB
NG-PON2 ≥30dB
CATV ≥30dB
OTDR ≥15dB
Return Loss
≥ 45dB
≥ 45dB
≥ 45dB
Passband Ripple
≤ 0.3dB
≤ 0.3dB
≤ 0.3dB
Directivity
≥ 50dB
≥ 50dB
≥ 50dB
Polarization Dependent Loss
≤ 0.2dB
≤ 0.2dB
≤ 0.2dB
Polarization Mode Dispersion
≤ 0.2ps
≤ 0.2ps
≤ 0.2ps
Power Handling
≤ 500mW
≤ 500mW
≤ 500mW
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