Specifications
MOBstack CE-WDM Multiplexer
Passive xWDM Coexistence Element for GPON, XGS-PON and NG-PON2 Networks
The MOBstack CE-WDM series from E.C.I. NETWORKS enables seamless coexistence of multiple Passive Optical Network (PON) technologies on the same fiber infrastructure. Using thin-film filter (TFF) technology, these passive modules allow operators to upgrade GPON networks to XGS-PON or NG-PON2 without replacing the existing Optical Distribution Network (ODN).
Installed near the Optical Line Terminal (OLT), the CE-WDM modules combine and separate wavelengths for GPON, XGS-PON, RF video, and monitoring services, ensuring a smooth network evolution toward 10G and future 25G/50G PON architectures.
| Parameter | Specification |
|---|---|
| Technology | Thin-Film Filter (TFF) Passive WDM |
| Supported Protocols | GPON, XGS-PON, NG-PON2, RF Video, PtP WDM-PON, OTDR |
| Data Rate | Up to 10G symmetrical (XGS-PON) |
| Insertion Loss | 0.8 dB – 2.3 dB depending on model |
| Channel Isolation | ≥16 dB – ≥30 dB depending on model |
| Polarization Dependent Loss | ≤0.2 dB |
| Directivity | ≥50 dB |
| Return Loss | ≥50 dB |
| Optical Power Handling | 300 mW |
| Operating Temperature | -10°C to +70°C |
| Storage Temperature | -40°C to +85°C |
| Fiber Type | Corning Ultra Fiber (G657.A1) |
| Compliance | ITU-T G.984.5, GR-1209-CORE, GR-1221-CORE |
| Form Factors | ABS module, LGX module, or 1RU rackmount |
| Connectors | LC/UPC, LC/APC, SC/UPC, SC/APC, ST |
Supported Wavelength Bands
| Service | Wavelength Range |
|---|---|
| GPON | 1290–1330 nm, 1480–1500 nm |
| XGS-PON | 1260–1280 nm, 1575–1580 nm |
| NG-PON2 | 1524–1544 nm, 1596–1625 nm |
| RF Video | 1540–1565 nm |
| PtP WDM-PON | 1610–1625 nm |
| OTDR Monitoring | 1640–1660 nm |
Features
Enables coexistence of GPON and next-generation PON technologies
Supports smooth migration to 10G XGS-PON
Passive optical design — no power required
Low insertion loss for optimal optical performance
High channel isolation preventing signal interference
Plug-and-play deployment
Supports multiple services simultaneously:
GPON
XGS-PON
NG-PON2
RF Video
OTDR monitoring
Point-to-Point WDM-PON
Multiple connector and packaging options
RoHS compliant
Custom configurations available
Available Models
| Model | Supported Services | Max Insertion Loss | Isolation |
|---|---|---|---|
| EN-CEx01 | GPON + XGS-PON | 1.1 dB | ≥30 dB |
| EN-CEx02 | GPON + XGS-PON + NG-PON2 | 1.4 dB | ≥30 dB |
| EN-CEx03 | GPON + XGS-PON + NG-PON2 + OTDR | 1.7 dB | ≥30 dB |
| EN-CEx04 | GPON + XGS-PON + RF Video | 1.4 dB | ≥30 dB |
| EN-CEx05 | GPON + XGS-PON + NG-PON2 + OTDR + PtP WDM-PON + RF | 2.3 dB | ≥30 dB |
Connectivity examples
- Core Layer: Two Optical Line Terminals (OLTs)—one for standard 2.5G GPON and another for higher-speed 10G Symmetric XGS-PON—send signals into a MobStack CEx PON Multiplexer. This device combines both signals onto a single feeder fiber trunk and includes an access point for an OTDR monitoring tool.
- Aggregation Layer: The multiplexed signal is carried to a 1x16 PLC Splitter, which passively divides the optical signal into 16 separate output fibers to distribute service to multiple end-users.
- Access Layer: The splitter outputs connect to distinct groups of Optical Network Units (ONUs) at subscriber locations. This showcases that some customers can receive standard GPON service (left) while others get higher-bandwidth XGS-PON service (right) off the same shared aggregation infrastructure. Both types of ONUs support a wide array of end-user devices, including IP phones, surveillance cameras, access points, and monitors, connected via Gigabit Power over Ethernet (PoE).
Applications
Deployment scenarios for this module
- Fiber-to-the-Home (FTTH) networks
- Passive Optical Networks (PON)
- Telecommunication access networks
- Next-generation broadband services
- Optical transport and WDM systems
- Network monitoring using OTDR
- RF video overlay distribution
Performance & Reliability
The MOBstack CE-WDM modules are designed for carrier-grade optical access networks where reliability and signal integrity are critical.
Key performance characteristics include:
Power & Wavelength Testing
We verify signal strength and wavelength stability to ensure seamless decoding and consistent transmission across the optical path.
Traffic Testing
All transceivers undergo bit error rate (BER) and packet loss testing to guarantee zero data loss and full compliance with Ethernet and Fibre Channel standards.
Optical Performance Validation
Our modules are evaluated for signal integrity, eye diagram clarity, and BER, ensuring stable, high-quality optical transmission in all operating conditions.
End Face Inspection
Each module's fiber interface is inspected and cleaned to eliminate contamination and physical defects -- a critical step for optimal signal performance and long service life.
Warranty & Compatibility
Warranty
Standard 1-year hardware warranty
Compatibility
The MOBstack CE-WDM series is designed to integrate with:
GPON OLT platforms
XGS-PON OLT systems
NG-PON2 equipment
Standard FTTH optical distribution networks
Passive splitters and fiber access infrastructure
Compatible with leading telecom vendors and open networking deployments. Compliance with GR-1209-CORE and GR-1221-CORE ensures telecom-grade optical reliability.
Q&A
Commonly asked questions
No. Under the Magnuson-Moss Warranty Act and similar global consumer protection laws, OEMs cannot void your equipment warranty simply because you use a third-party transceiver. Your equipment warranty remains intact.
A CE-WDM (Coexistence Element WDM) allows different PON technologies such as GPON and XGS-PON to operate simultaneously on the same fiber network.
It separates and combines wavelengths so existing GPON services can continue while new 10G services are introduced.
No. MOBstack CE-WDM modules are fully passive optical devices.
Typically near the OLT in the central office or access node.
Yes. Certain models support OTDR monitoring wavelengths for fiber diagnostics.
Yes. We offer full support, RMA service, and warranty coverage on all modules.
Still have questions?
Our team is ready to help with any technical questions about compatibility or deployment.
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Resources
Downloads and documentation
