1. Product Title

1310nm PM Combiner 2×1 Module (1301/1311nm) with FC/APC Connector

2. Product Overview

The GracyFiber 1310nm PM Combiner is a polarization-maintaining 2×1 optical combiner designed to combine two input optical signals around the 1310nm wavelength region into a single output fiber while maintaining polarization performance. The module uses PM 1310 Panda Fiber with slow-axis operation and is packaged in a compact 100×80×10 mm aluminum module.

3. Key Features

• 2×1 polarization-maintaining optical combiner
• Supports 1301nm and 1311nm wavelength inputs
• Uses PM 1310 Panda Fiber
• Slow-axis working orientation
• Low insertion loss:
  • 1301nm: 0.95 dB
  • 1311nm: 0.84 dB
• High polarization extinction ratio:
  • 1301nm: 18.9 dB
  • 1311nm: 27.9 dB
• Return loss ≥50 dB
• FC/APC connector configuration
• 100×80×10 mm compact module package
• Optical power handling up to 300 mW

4. Applications

• Polarization Maintaining Optical Systems
• Fiber Laser Systems
• Optical Amplifier Systems
• Coherent Optical Communication Systems
• Fiber Sensing Systems
• Photonic Research and Laboratory Systems
• 1310nm Optical Signal Combining Applications

5. Technical Specifications

Optical Specifications

Mechanical Specifications

6. Configuration & Customization Options

Available Configuration

7. Detailed Product Description

The GracyFiber PM Combiner is a passive polarization-maintaining optical component designed to combine two optical inputs into one output path while preserving the polarization characteristics of the transmitted signals.

This 2×1 configuration is designed around the 1310nm wavelength region, with two input channels operating at 1301nm and 1311nm. The device uses PM 1310 Panda Fiber and is configured for slow-axis operation, making it suitable for optical systems where polarization orientation needs to be controlled during signal combining.

The measured insertion loss is 0.95 dB at 1301nm and 0.84 dB at 1311nm, while the polarization extinction ratio reaches 18.9 dB and 27.9 dB, respectively. These parameters are important in polarization-sensitive systems because maintaining polarization contrast helps reduce unwanted polarization coupling effects.

The module is assembled in a compact 100×80×10 mm package with FC/APC connectors and 1-meter fiber leads. The 0.9mm loose tube fiber structure provides a practical interface for system integration while maintaining the polarization characteristics of the PM fiber.

With its wavelength-specific design, PM fiber structure, and controlled polarization performance, this combiner can be integrated into fiber laser, sensing, coherent communication, and photonic laboratory systems requiring stable 1310nm polarization-maintaining signal combination.

8. Application Scenario

Application 1 — Polarization Maintaining Fiber Laser System

In fiber laser architectures, multiple optical sources may need to be combined while preserving polarization states.

The PM Combiner combines two 1310nm-region optical inputs into one output fiber using PM fiber and slow-axis alignment, helping maintain polarization characteristics throughout the optical path.

Application 2 — Coherent Optical Communication

Coherent communication systems are sensitive to polarization changes because signal processing relies on controlled optical states.

A PM Combiner can be integrated into polarization-sensitive optical paths where two optical inputs need to be combined before entering subsequent optical components.

Application 3 — Fiber Sensing Systems

Many fiber sensing systems use polarization-maintaining fibers to improve measurement stability.

The PM Combiner provides a compact method for combining polarization-controlled optical signals within sensing architectures.

9. FAQ

1. What is a PM Combiner?

A PM Combiner is a polarization-maintaining optical component that combines multiple optical input signals into one output fiber while maintaining polarization characteristics through PM fiber alignment.

2. What wavelengths does this 1310nm PM Combiner support?

This product supports two input wavelengths:

• 1301nm
• 1311nm

The measured insertion loss values are 0.95 dB and 0.84 dB respectively.

3. What type of fiber is used in this PM Combiner?

The module uses PM 1310 Panda Fiber with slow-axis working orientation and FC/APC connectors.

10. Why GracyFiber

GracyFiber provides passive optical components for fiber communication, photonics, and advanced optical systems.

The PM component portfolio includes:

• PM Combiner
• PM Coupler
• PM Fiber Array
• PM WDM Components
• Polarization-related passive optical devices

For PM optical projects, GracyFiber supports configuration evaluation based on:

• Operating wavelength
• Fiber type
• Polarization axis requirement
• Connector interface
• Fiber length
• Package requirement

11. Related Products

12. Call to Action

For PM Combiner quotation or technical evaluation, please provide:

• Operating wavelength
• Input/output channel configuration
• PM fiber type
• Polarization axis requirement
• PER target
• Insertion loss requirement
• Connector type
• Fiber length
• Package dimension
• Optical power requirement
• Application environment

GracyFiber can review the optical requirements and recommend a suitable PM combiner configuration.