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In the era of digital transformation, the demand for high-speed, reliable, and flexible communication networks has never been higher. Passive Optical Networks (PON) have become a cornerstone of modern communication infrastructure, supporting a wide range of applications from home broadband to enterprise networks and beyond.
To meet the growing bandwidth needs and ensure future-proof network deployments, the integration of multi channel fiber WDM (Wavelength Division Multiplexing) with GPON, XGS-PON, NG-PON2, RF Video, and OTDR technologies (also called CEx Module) offers a comprehensive solution that maximizes fiber utilization and enhances service delivery capabilities.
It is a transitional technology product that enables coexistence between old and new networks during network upgrades, facilitating smooth upgrades and saving fiber resources.
What is GPON, XGS-PON,G-PON2, RF Video, OTDR Technology?
GPON (Gigabit-Capable Passive Optical Network)
- Features: GPON supports downstream rates of up to 2.5Gbps and upstream rates of up to 1.25Gbps, with split ratios ranging from 1:16 to 1:128. It uses WDM technology to simultaneously transmit video, data, and voice over the same fiber.
- Application Scenarios: Ideal for home broadband access, GPON is widely deployed in residential areas to provide reliable internet services. It is also used in enterprise networks and smart city applications, offering a cost-effective solution for high-speed data transmission.
XGS-PON (10G Symmetric PON)
- Features: XGS-PON supports symmetrical 10Gbps uplink and downlink rates, with split ratios ranging from 1:16 to 1:256. It uses Time and Wavelength Division Multiplexing (TWDM) technology to coexist with GPON on the same fiber.
- Application Scenarios: XGS-PON is designed for applications requiring high-bandwidth symmetrical transmission, such as enterprise networks, data center interconnection, and 5G fronthaul. It is particularly useful in scenarios where both high-speed data and low-latency services are critical.
NG-PON2 (Next-Generation PON2)
- Features: NG-PON2 leverages WDM technology to create up to eight wavelength-separated PON trees on the same fiber. It supports uplink and downlink rates of up to 10Gbps, with split ratios ranging from 1:16 to 1:256. It supports TWDM-PON and point-to-point WDM-PON, making it suitable for a variety of new use cases.
- Application Scenarios: NG-PON2 is ideal for enterprise networks, mobile backhaul and fronthaul, and scenarios requiring high bandwidth and flexible wavelength allocation. It is also well-suited for future-proofing networks to support emerging technologies like 5G and IoT.
RF Video
- Features: RF Video technology allows the transmission of analog video signals over fiber, enabling the delivery of high-quality video content. It is often used in conjunction with PON technologies to provide integrated video services.
- Application Scenarios: RF Video is commonly used in cable TV networks, video-on-demand services, and other applications where high-quality video delivery is essential. It can be seamlessly integrated with PON networks to offer a comprehensive solution for both data and video services.
OTDR (Optical Time Domain Reflectometer)
- Features: OTDR is a tool used for fiber optic network fault diagnosis and maintenance, capable of detecting breaks, losses, and reflection points in the fiber.
- Application Scenarios: It is widely used in the installation, maintenance, and troubleshooting of fiber optic networks, ensuring the reliability and performance of the network.
Woking Principle
CEx Modules Woking Wavelength
| Technology | Wavelength | |
| Uplink | downlink | |
| GPON | 1290nm ~ 1330nm | 1480nm ~ 1500nm |
| XGS-PON | 1260nm ~ 1280nm | 1575nm ~ 1581nm |
| NG-PON | 1524nm ~ 1544nm | 1595nm ~ 1603nm |
| RF-Video | – | 1550nm ~ 1560nm |
| OTDR | 1640nm ~ 1660nm | |
WDM Configuration
There are 4 types of configuration which can be offered, please choose according to your project needs.
If customers require a higher density configuration, a single LGX module box, with the same dimensions (215*150*20mm), can accommodate several WDM modules. Taking GPON & XGS-PON as an example, one LGX module box can hold one 2CH WDM, three 2CH WDMs, or eight 2CH WDMs. See the diagram below.
4CH WDM GPON And XGS-PON SC/UPC Plug-in LGX Box
2X4CH WDM GPON And XGS-PON SC/UPC Plug-in LGX Box
4X4CH WDM GPON and XGS-PON LC/UPC Plug-in LGX Box
The LGX module is generally not used alone but is typically installed within a 1U rack. Yingda can provide standard rack dimensions of 482*160*1Umm. For cost control, we can also offer a frame with only the module mounting bracket, as shown in the figure below.
1U Rack with 4 LGX
- Width: 482mm4 Slots for LGX box
- Rack mount patch panel
1U Rack with 3 LGX
- Width: 482mm3 Slots for LGX box
- Rack mount patch panel
1U Rack Bracket
- Width: 482mm3 Slots for LGX box
- Rack mount frame
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