Cex-WDM Module
The Coexist-WDM (CEx-WDM) Series is purpose-built for Next-Generation Passive Optical Networks (NG-PON). It enables GPON coexistence on the existing Optical Distribution Network (ODN), letting operators upgrade and expand networks without overhauling current infrastructure. Supporting GPON, XG-PON, NG-PON2 and OTDR monitoring, the modules manage NG-PON1 and NG-PON2 TWDM wavelengths to maximize spectral density, expand network capacity and handle increasing traffic. Improved throughput supports low-latency real-time applications, delivering consistent connectivity and dependable services. This future-proof solution achieves high density and high speed while enabling smooth coexistence of legacy and new PON technologies. Compact LGX and cassette packages fit standard ODF frames for central office deployment.
| Parameters | Unit | Specification | ||
| Operating Wavelength Range | nm | 1260～1660 | ||
| GPON Bands | Operating Wavelength | nm | 1290～1330 & 1480～1500 | |
| Insertion Loss* | dB | ≤1.3 | ||
| Isolation @ XG-PON bands & NG-PON2bands & OTDR bands | dB | ≥35 | ||
| XG-PON Bands | Operating Wavelength | nm | 1260～1280 & 1575～1581 | |
| Insertion Loss* | dB | ≤1.6 | ||
| Isolation @ GPON bands & NG-PON2bands & OTDR bands | dB | ≥35 | ||
| NG-PON2 Bands | Operating Wavelength | nm | 1524～1544 &1596～1625 | |
| Insertion Loss* | dB | ≤1.8 | ||
| Isolation @ GPON | dB | ≥40 | ||
| Bands & XG-PON bands & OTDR bands | ||||
| OTDR Bands | Operating Wavelength | nm | 1640～1660 | |
| Insertion Loss* | dB | ≤2.2 | ||
| Isolation @ GPON | dB | ≥35 | ||
| Bands & XG-PON bands & NG-PON2 bands | ||||
| Pass Channel Ripple | dB | ≤0.3 | ||
| Return Loss | dB | ≥45 | ||
| Directivity | dB | ≥45 | ||
| Polarization Dependent Loss | dB | ≤0.2 | ||
| Polarization Mode Dispersion | Ps | ≤0.2 | ||
| Power handling | mW | ≥300 | ||
| Fiber Type | / | Customer specified | ||
| Fiber Length | m | 1.0m or customer specified | ||
| Connector Type | / | Customer specified | ||
| Operating Temperature | ℃ | -5 ~ +70 | ||
| Storage Temperature | ℃ | -40 ~ +85 | ||
| Package Dimension | mm | L100 x W80 x H10 ABS Box or | ||
| L60 x W50 x H7.0 Metal Box | ||||
Key Features
–Low insertion loss for each PON channel
–Passive design, no power supply required
–Compliant with GR-1209, IEC 61300 environmental & mechanical standards
–RoHS & REACH compliant
–Custom port configuration, connector types and packaging available
–SMF G.657.A1 / G.652.D fiber option
Applications
–PON network smooth upgrade & coexistence (GPON / XGS-PON / NG-PON2)
–Central office ODF integration
–FTTH & FTTx network migration
–In-band fiber monitoring with OTDR
–CATV RF video overlay on PON
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