As optical networks continue to evolve toward higher capacity, lower latency and more stable transmission performance, the demand for reliable passive wavelength management solutions is increasing rapidly. To support this growing need, Gracyfiber introduces its 16CH 200G O-Band PM DWDM Module, a compact passive optical module designed for broadband networks, PON networks, CATV systems and DWDM transmission applications.

The module operates across the O-band wavelength range from 1260nm to 1380nm, with 16 dedicated DWDM channels from 1295.56nm to 1312.58nm. With 200G channel spacing, low insertion loss, high extinction ratio and strong channel isolation, this polarization-maintaining DWDM module is engineered for applications that require stable optical performance and precise wavelength routing.

A 16-Channel O-Band PM DWDM Solution for Modern Fiber Networks

The 16CH 200G O-Band PM DWDM Module is designed to multiplex and demultiplex multiple wavelengths within a compact passive module. By enabling 16 optical channels over a defined O-band wavelength window, it helps network designers improve fiber utilization while maintaining stable signal transmission.

Compared with standard wavelength division components, this module uses polarization-maintaining fiber technology, making it suitable for systems where polarization stability is important. The product uses Corning PM-1310-U25D fiber, with the connector key aligned to the slow axis, supporting stable polarization control in demanding optical systems.

Its compact ABS box housing of 120 * 80 * 18mm makes it suitable for integration into optical network equipment, test platforms and customized fiber optic assemblies.

Low Insertion Loss, High Isolation and Stable Channel Performance

For DWDM systems, insertion loss and channel isolation directly affect link performance. Gracyfiber’s 16CH O-Band PM DWDM Module is designed with a pass band of λC ±0.2nm and ripple of less than 0.5dB, helping ensure consistent channel performance across the full wavelength plan.

The module provides adjacent channel isolation of more than 25dB and non-adjacent channel isolation of more than 35dB, helping reduce crosstalk between wavelengths. With return loss above 45dB and directivity above 50dB, the module supports stable optical transmission in broadband, PON, CATV and DWDM network environments.

The module also features a total link loss of less than 5.5dB, making it a practical solution for passive optical network designs where power budget is an important consideration.

Designed for Broadband Networks, PON Networks, CATV and DWDM Systems

The O-Band PM DWDM Mux Module is suitable for a wide range of optical communication scenarios. In broadband access networks, it can help combine multiple wavelength channels into a single fiber path, improving network capacity without requiring additional fiber infrastructure.

In PON networks, the module can support wavelength-based transmission and separation for advanced optical access applications. For CATV systems, its high isolation and stable optical performance help maintain signal quality across multiple channels. In DWDM systems, the 200G channel spacing and 16-channel design make it suitable for compact wavelength routing, testing and customized network deployment.

Typical applications include:

• Broadband optical networks
• PON and access network systems
• CATV transmission systems
• DWDM wavelength multiplexing and demultiplexing
• Polarization-maintaining optical systems
• Optical test and measurement platforms
• Customized fiber optic modules

Compact Passive Design with Customizable Wavelength Options

One of the key advantages of this module is its passive design. Since it does not require electrical driving components for wavelength multiplexing, it can provide stable long-term operation with low maintenance requirements. The module is designed for an operating temperature range of 0℃ to +65℃, supporting reliable use in standard communication equipment environments.

The standard configuration includes LC/UPC connectors, 0.9mm blue tube fiber, 1-meter fiber length and a compact ABS box package. According to different project requirements, wavelength plans and mechanical structures can also be customized.

This flexibility makes the module suitable not only for standard network deployment, but also for customer-specific optical system design, laboratory testing and OEM integration.