1. Product Title

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

2. Product Overview

GracyFiber 2CH PM MWDM Module is a 2×1 polarization-maintaining wavelength combiner designed for two closely spaced O-band channels at nominal 1301 nm and 1311 nm. The supplied production documents identify PM1310 Panda fiber, FC/APC interfaces, 0.9 mm loose-tube fiber, slow-axis operation, and a compact 100 × 80 × 10 mm module.

3. Key Features

• 2-channel / 2×1 PM wavelength-combining architecture
• Nominal wavelength channels: 1301 nm / 1311 nm
• PO filter centers: 1301.5 nm / 1311.5 nm
• Polarization-maintaining PM1310 Panda Fiber
• Slow-axis operation
• FC/APC connector interfaces
• 0.9 mm loose-tube fiber
• Input and output fiber length: 1.0 m
• Compact module dimensions: 100 × 80 × 10 mm
• Power handling listed as 300 mW

4. Applications

Based on the supplied product and production documents, suitable applications include:

• Polarization-Maintaining Wavelength Combining
• Dual-Wavelength O-Band Optical Systems
• 1301/1311 nm PM Optical Links
• Polarization-Sensitive Multi-Wavelength Fiber Systems

More application-specific claims such as 5G fronthaul, coherent communication, sensing, or transceiver integration require confirmation before publication.

5. FAQ

What is a 2CH PM MWDM Module?

It is a polarization-maintaining wavelength component that combines two optical wavelength channels through a 2×1 configuration. This product is documented for nominal 1301 nm and 1311 nm channels.

What wavelengths does this PM MWDM module use?

The test report identifies:

• 1301 nm
• 1311 nm

The PO review also references filter center wavelengths of:

• 1301.5 nm
• 1311.5 nm

The distinction between nominal channel wavelength and filter center wavelength should be retained in the final specification.

What fiber is used?

The five-unit test report identifies the fiber as PM 1310 Panda Fiber.

The PO review also contains a reference to G657A1, but its exact relationship to the PM fiber construction is not sufficiently clear and should be confirmed.

What connectors are used?

The supplied test report specifies FC/APC connectors together with 0.9 mm loose-tube fiber and slow-axis operation.

What are the insertion loss and PER specifications?

The PO review lists 1.2 dB and 18 dB for IL and PER respectively. The five supplied production test records show measured IL values up to 1.02 dB and PER values down to 18.6 dB.

The exact specification operators—such as IL ≤1.2 dB and PER ≥18 dB—should be formally confirmed before publishing them as guaranteed limits.

6. Technical Specifications

7. Configuration & Customization Options

Confirmed Configuration

Channel Configuration

• 2CH
• 2×1

Wavelength

• 1301 / 1311 nm nominal
• 1301.5 / 1311.5 nm filter-center references

Fiber

• PM1310 Panda Fiber

Polarization

• Slow-axis working

Connector

• FC/APC

Fiber Protection

• 0.9 mm loose tube

Fiber Length

• Input: 1.0 m
• Output: 1.0 m

Housing

• 100 × 80 × 10 mm

8. Detailed Product Description

The GracyFiber 2CH PM MWDM Module is a polarization-maintaining wavelength component developed around two closely spaced O-band channels. The documented product configuration uses nominal 1301 nm and 1311 nm optical channels in a 2×1 combiner architecture.

The production review identifies filter center wavelengths of 1301.5 nm and 1311.5 nm, while the finished-product test sheets use 1301 nm and 1311 nm as the operating-wavelength labels. This wavelength arrangement allows two optical signals to be managed within a single polarization-maintaining module while preserving a defined polarization-axis relationship.

The finished assembly uses PM1310 Panda Fiber, 0.9 mm loose-tube protection, FC/APC connectors, and slow-axis operation. Both the input and output fiber lengths are documented as 1.0 m. The optical assembly is housed in a 100 × 80 × 10 mm module.

Polarization performance is a key characteristic of this product. The production review lists an 18 dB PER requirement, while the supplied five-piece batch report records measured PER values from 18.6 dB to 27.9 dB across the two wavelength channels.

Insertion loss is likewise wavelength- and unit-dependent. Across the five tested assemblies, measured IL values range from 0.36 dB to 1.02 dB. The PO review separately lists a 1.2 dB value for the finished product.

This combination of dual-wavelength routing, PM fiber construction, slow-axis alignment, and FC/APC termination makes the module suitable for optical systems requiring two O-band wavelength channels while maintaining polarization control.

9. Application Scenario

Application 1 — Dual-Wavelength PM Signal Combining

Two polarization-maintaining optical signals operating at the documented 1301 nm and 1311 nm channels can be routed through the 2×1 PM MWDM module.

The module provides wavelength combining while maintaining the defined slow-axis PM fiber configuration.

Application 2 — Polarization-Sensitive O-Band Optical Link

For an optical system operating around 1310 nm with two separate wavelength channels, the module provides a compact interface using PM1310 Panda Fiber and FC/APC connectors.

The documented 1301/1311 nm channel pair allows both wavelength management and polarization control within the same component.

Application 3 — PM Multi-Wavelength Optical Assembly

Where an optical subsystem requires multiple PM wavelength components to be integrated into a packaged assembly, the documented 100 × 80 × 10 mm module provides a defined mechanical format with 1 m fiber leads and FC/APC interfaces.

10. Why GracyFiber

GracyFiber provides passive optical components covering both wavelength management and polarization-maintaining optical systems.

Relevant product capabilities include:

• PM MWDM Modules
• PM WDM Components
• PM Fiber Couplers
• PM Circulators
• PM Isolators
• PM Polarizers
• PM Fiber Arrays
• PM MT-MPO Assemblies
• CWDM / DWDM / LWDM / MWDM
• Fiber Arrays and FAUs

For this particular 2CH PM MWDM module, the supplied documentation includes production-review requirements together with individual test records for five finished units, allowing optical performance to be traced at the product level.

11. Related Products

12. Call to Action

Need a 2CH PM MWDM module for a polarization-sensitive dual-wavelength optical system?

Send GracyFiber your required:

• Channel wavelengths
• Center-wavelength tolerance
• Channel configuration
• Target insertion loss
• Required PER
• Transmission / reflection isolation
• PM fiber type
• Polarization axis
• Connector type
• Fiber length
• Package dimensions
• Optical power
• Operating temperature
• Application

GracyFiber can review the required PM MWDM configuration before quotation.