1. Product Title

2CH MWDM Polarization Maintaining Module – 1301/1311 nm PM Wavelength Combiner

2. Product Overview

GracyFiber 2CH MWDM Polarization Maintaining (PM) Module is a compact passive optical wavelength combining component designed for polarization-sensitive optical systems. The module combines two MWDM channels centered around 1301 nm and 1311 nm using polarization-maintaining fiber and provides stable wavelength routing performance in a compact module package.

3. Key Features

• 2CH MWDM polarization maintaining module
• 1301 nm / 1311 nm wavelength combining
• PM 1310 Panda Fiber
• Slow-axis polarization alignment
• FC/APC polarization-maintaining connectors
• 100 × 80 × 10 mm compact module package
• Insertion loss ≤1.2 dB (module specification)
• Extinction Ratio ≥18 dB (with connector)
• Transmission / Reflection Isolation ≥30 / 45 dB
• Operating temperature: -5°C to +65°C

The production specification defines the finished-module requirements including IL, ER, isolation, connector type, fiber type, and mechanical structure.

4. Applications

• Polarization Maintaining Optical Systems
• MWDM Optical Modules
• Fiber Laser Systems
• Coherent Optical Components
• Optical Sensing Systems
• Photonics Integration Platforms
• 1310 nm Optical Communication Systems

Note: Specific customer applications should be confirmed according to the final system architecture.

5. FAQ

What is a 2CH MWDM Polarization Maintaining Module?

A 2CH MWDM PM Module is a passive optical wavelength combining component that integrates two wavelength channels while maintaining polarization characteristics through PM fiber and polarization-aligned assembly.

This product combines 1301 nm and 1311 nm wavelength channels using PM1310 fiber.

What wavelengths does this MWDM PM Module support?

The specified wavelength channels are:

• 1301 nm
• 1311 nm

The testing sheets identify the operating wavelength measurement points as approximately:

• 1301 nm
• 1311 nm

What type of fiber is used?

The module uses:

PM 1310 Panda Fiber

The process specification also identifies:

• 0.9 mm blue loose tube
• PM fiber slow-axis working configuration

What connector type is available?

The specified connector is:

FC/APC polarization-maintaining connector

The assembly requires slow-axis alignment with the FC/APC key orientation.

What optical performance does the module provide?

The production requirement specifies:

• Module IL ≤1.2 dB
• ER ≥18 dB
• T/R Isolation ≥30/45 dB

Individual samples in the supplied test reports show measured IL and PER values for process verification.

6. Technical Specifications

7. Detailed Product Description

The GracyFiber 2CH MWDM Polarization Maintaining Module is designed for optical systems requiring wavelength combining together with polarization control.

The module integrates two MWDM wavelength channels centered around 1301 nm and 1311 nm into a compact passive optical package. Unlike conventional single-mode wavelength modules, this design uses polarization-maintaining Panda fiber and controlled axis alignment to preserve polarization characteristics during optical transmission.

During assembly, the PM fiber is processed with slow-axis alignment, and FC/APC PM connectors are installed with key orientation control. This enables the module to maintain polarization extinction performance after connectorization.

The finished module is packaged in a 100 × 80 × 10 mm housing with 0.9 mm loose-tube fiber output. The production specification requires module-level optical testing, including insertion loss, extinction ratio, and transmission/reflection isolation verification.

The defined module performance includes:

• IL ≤1.2 dB
• ER ≥18 dB
• T/R isolation ≥30/45 dB

The supplied production process also defines 100% 3D end-face inspection, connector alignment verification, and final optical performance testing before shipment.

This structure makes the module suitable for polarization-sensitive photonics systems requiring compact wavelength combining at the 1310 nm region.

8. Application Scenario

Application 1 — Polarization Maintaining Photonics Systems

In polarization-sensitive optical systems, maintaining the polarization state of transmitted signals is critical.

The PM fiber architecture and slow-axis alignment help preserve polarization characteristics during wavelength combining.

Application 2 — Fiber Laser and Optical Sensing

Fiber lasers and sensing systems often require stable wavelength routing and polarization control.

The MWDM PM module provides a compact passive solution for combining selected wavelength channels.

Application 3 — Optical Communication Components

For optical systems operating around the 1310 nm region, the module provides wavelength combination using PM fiber technology.

9. Why GracyFiber

GracyFiber provides passive optical components and custom optical assemblies for photonics and optical communication applications.

Relevant capabilities include:

• PM WDM Components
• PM Couplers
• PM Combiners
• PM Fiber Arrays
• WDM Modules
• Optical Filters
• Fiber Optic Assemblies
• Custom Fiber Components

For MWDM PM projects, customers can provide:

• Target wavelength
• Channel count
• Fiber type
• Polarization requirement
• Connector type
• Package size
• Optical performance targets

for engineering evaluation.

10. Related Products

11. Call to Action

For a 2CH MWDM Polarization Maintaining Module quotation or technical evaluation, please provide:

• Required wavelengths
• Channel configuration
• PM fiber type
• Polarization axis requirement
• Connector type
• Fiber length
• Package requirement
• IL target
• ER target
• Isolation requirement
• Application environment

GracyFiber can support customized PM wavelength module solutions according to your optical system requirements.