1. Product Title

WDM-PON Access Module – 2CH to 7CH Multi-Service PON Coexistence

2. Product Overview

GracyFiber WDM-PON Access Module is a multi-service wavelength management solution designed to enable GPON, XGS-PON, NG-PON2, 25G PON, and RF video services to coexist over shared fiber infrastructure. It allows operators to introduce next-generation PON technologies without replacing the existing optical distribution fiber.

3. Key Features

• Multi-PON and multi-service wavelength coexistence
• Supports GPON, XGS-PON, NG-PON2, 25G PON, and RF video
• 2CH / 3CH / 5CH / 6CH / 7CH configurations
• Low insertion loss
• High adjacent and non-adjacent isolation
• Low polarization-dependent loss (PDL)
• Compact module design
• Wide operating wavelength coverage
• Flexible customization and integration

The supplied product description specifically identifies low insertion loss, high isolation, low PDL, compact design, multi-service coexistence, broad wavelength coverage, and flexible integration as primary characteristics.

4. Applications

• FTTH / FTTx Network Upgrade and Coexistence
• GPON to XGS-PON Network Migration
• GPON to NG-PON2 Network Migration
• Multi-Service Access Nodes
• Residential and Enterprise Fiber Access
• Edge Access and Cabinet-Based Deployment
• Data + Video + Monitoring Service Convergence

These deployment scenarios are directly supported by the supplied product materials.

5. FAQ

What is a WDM-PON Access Module?

A WDM-PON Access Module uses wavelength-selective optical filtering to allow multiple PON technologies or optical services to coexist over shared fiber infrastructure.

The GracyFiber module is designed to support GPON, XGS-PON, NG-PON2, 25G PON, and RF video coexistence.

Can GPON and XGS-PON operate on the same fiber using this module?

The product is specifically designed for multi-PON coexistence and migration from legacy PON networks to next-generation systems without redeploying fiber.

The documented wavelength bands include separate GPON and XGS-PON bands. The exact port/channel configuration should be selected according to the required network architecture.

What channel counts are available?

The supplied specification lists:

• 2CH
• 3CH
• 5CH
• 6CH
• 7CH

The source does not define which exact combination of PON services corresponds to every channel count, so that mapping should be confirmed when configuring the module.

Does the module support RF video overlay?

Yes. RF video overlay is explicitly included in the supported services, with a documented RF video wavelength band of 1550–1560 nm.

Can the connector and package be customized?

The supplied specification lists LC/UPC or customized connectors and several package dimensions. Additional mechanical or connector configurations should be confirmed according to the project requirement.

6. Technical Specifications

Supported Service Wavelength Bands

*The spreadsheet uses the term “25GS-PON.” The accompanying product description uses “25G PON.” This terminology should be confirmed before publication.

Optical Performance by Channel Count

General Specifications

7. Configuration & Customization Options

Channel Count

Available configurations:

• 2CH
• 3CH
• 5CH
• 6CH
• 7CH

PON / Service Bands

Documented service bands include:

• GPON
• XGS-PON
• NG-PON2
• 25G PON
• RF Video
• NG-PON2 PtP

Fiber Type

Documented in the spreadsheet as:

• G67A1
• A2
• B3
• SMF-28

The first three fiber designations require confirmation before publication.

Fiber Protection

Available:

• 250 µm fiber
• 900 µm loose tube

Fiber Length

• Standard documented length: 1000 mm
• Other lengths: [Need confirmation]

Connector

• LC/UPC
• Customized connector

Package

Documented dimensions:

• 80 × 58 × 8 mm
• 120 × 80 × 18 mm
• 155 × 129 × 29 mm
• 482 × 250 × 44 mm

8. Detailed Product Description

The GracyFiber WDM-PON Access Module is designed for optical access networks where multiple generations of PON technology must operate over the same physical fiber infrastructure. Rather than replacing the existing optical distribution network when upgrading from one PON generation to another, wavelength-selective filtering allows different service bands to be combined or separated within the access system.

The supplied configuration supports service bands associated with GPON, XGS-PON, NG-PON2, 25G PON, RF video, and NG-PON2 point-to-point transmission. This multi-band architecture is intended to support network migration and service coexistence while retaining existing fiber resources.

The module is available in 2-, 3-, 5-, 6-, and 7-channel versions. Maximum port insertion loss increases with channel count, from 1.0 dB for 2CH to 2.3 dB for 7CH in the supplied specification. Adjacent isolation is specified at ≥30 dB and non-adjacent isolation at ≥35 dB.

For system integration, the product is available with 250 µm fiber or 900 µm loose tube and a documented 1000 mm fiber length. LC/UPC and customized connector configurations are listed.

Multiple mechanical formats are also specified, from an 80 × 58 × 8 mm compact module to a 482 × 250 × 44 mm enclosure. This enables deployment in different access-network environments, although the exact package-to-configuration mapping should be confirmed before publication.

The product is particularly relevant to operators planning progressive GPON-to-XGS-PON or NG-PON2 upgrades, multi-service access nodes, and FTTH/FTTx coexistence deployments.

9. Application Scenario

Application 1 — GPON to XGS-PON Network Upgrade

An existing GPON access network may need to introduce XGS-PON services without replacing the deployed fiber plant.

The WDM-PON Access Module provides wavelength-selective paths for the documented GPON and XGS-PON wavelength bands, allowing the two access technologies to coexist over shared fiber infrastructure during network migration.

Application 2 — Multi-Generation PON Coexistence

Access networks may require simultaneous support for legacy and newer PON technologies.

The documented wavelength bands cover GPON, XGS-PON, NG-PON2, and 25G PON services. Multi-channel configurations from 2CH to 7CH allow the wavelength architecture to be selected according to the required service combination.

Application 3 — Multi-Service Access Node

The source documentation identifies data + video + monitoring multi-service access nodes as an application.

With RF video support and multiple PON wavelength bands, the module can provide wavelength separation and coexistence within an integrated optical access node.

10. Why GracyFiber

GracyFiber provides passive optical components for wavelength management, fiber access networks, optical interconnect, and photonics applications.

Relevant product capabilities include:

• WDM-PON Modules
• FWDM
• CWDM
• DWDM
• MWDM
• LWDM
• AAWG
• PLC Splitters
• FBT Couplers
• Fiber Arrays and FAUs
• MPO/MTP Optical Interconnects
• PM Optical Components

For this WDM-PON Access Module family, the supplied specifications cover multiple service wavelength bands, 2CH–7CH configurations, optical performance requirements, fiber options, connector configurations, and several package formats.

11. Related Products

12. Call to Action

Planning a GPON, XGS-PON, NG-PON2, or multi-service PON coexistence deployment?

Send GracyFiber your required:

• PON technologies
• Required wavelength bands
• Channel count
• Required insertion loss
• Isolation requirements
• Fiber type
• Fiber coating
• Fiber length
• Connector type
• Package size
• Optical power
• Existing network architecture
• Upgrade or coexistence application

GracyFiber can review the required WDM-PON configuration before quotation.