1. Product Title

3-Port PM Fiber Circulator – 1064 to 1650 nm

2. Product Overview

GracyFiber PM Fiber Circulator is a 3-port polarization-maintaining optical component that routes light sequentially from Port 1 → Port 2 → Port 3 while suppressing backward propagation. Built with precision-aligned PM fiber, it is designed to preserve the polarization state while reducing back-reflection and optical crosstalk.

3. Key Features

• 3-port directional optical routing: Port 1 → Port 2 → Port 3
• Polarization-maintaining design for preserving polarization state
• Available wavelengths: 1064 / 1310 / 1480 / 1550 / 1650 nm
• Single-stage and dual-stage configurations
• Dual-stage option for increased isolation
• Low insertion loss
• High return loss
• Environmental stability

The supplied product document specifically identifies one-way optical routing, polarization-maintaining operation, 1064–1650 nm wavelength coverage, and single-/dual-stage options as core characteristics.

4. Applications

• Fiber Laser Systems
• Optical Amplifiers / EDFA
• Quantum Optics
• Optical Sensing
• Interferometry
• Coherent Communication

5. FAQ

What is a PM Fiber Circulator?

A PM Fiber Circulator is a directional polarization-maintaining optical component. In this 3-port configuration, light is routed from Port 1 to Port 2 and then from Port 2 to Port 3, while backward optical propagation is suppressed.

Which wavelengths are available?

The supplied specifications include:

• 1064 nm
• 1310 nm
• 1480 nm
• 1550 nm
• 1650 nm

What is the difference between single-stage and dual-stage PM circulators?

The supplied documentation states that both single- and dual-stage configurations are available, with the dual-stage design intended to provide higher isolation.

According to the supplied specification table, 1064 nm includes both single-stage and dual-stage versions, while the listed 1310–1650 nm configurations are dual-stage.

What polarization axes are available?

The specification table lists:

• Single Axis
• Dual Axis

The appropriate configuration can be selected according to the required PM optical system.

Can connectors be customized?

Yes. The supplied specification lists FC/APC, FC/UPC, or customized connector configurations.

6. Technical Specifications

7. Configuration & Customization Options

Available Wavelengths

• 1064 nm
• 1310 nm
• 1480 nm
• 1550 nm
• 1650 nm

Stage Configuration

1064 nm

• Single Stage
• Dual Stage

1310 / 1480 / 1550 / 1650 nm

• Dual Stage according to the supplied specification table

Other configurations: [Need confirmation]

Operating Axis

• Single Axis
• Dual Axis

PM Fiber

Depending on wavelength:

• PM980
• PM1300
• PM1550

Fiber Protection

• 250 µm
• 900 µm loose tube
• 2.0 mm tube
• 3.0 mm tube

Connector Options

• FC/APC
• FC/UPC
• Customized connector

Fiber Length

• Standard documented length: 100 cm
• Other lengths: [Need confirmation]

Package

Available package dimensions depend on fiber/tube configuration:

• Ø5.5 × 35 mm
• Ø5.5 × 38 mm
• 90 × 20 × 10 mm
• 100 × 80 × 10 mm

8. Detailed Product Description

The GracyFiber PM Fiber Circulator is a three-port directional optical device developed for polarization-sensitive fiber systems. Its optical routing architecture directs light sequentially from Port 1 to Port 2 and Port 2 to Port 3, while suppressing unwanted backward light.

This directional behavior is particularly useful in optical systems where reflected signals can interfere with upstream components. The PM construction is designed to maintain the polarization state through the device, making the circulator suitable for applications where polarization stability is an important system requirement.

The product family covers several commonly used photonics and communication wavelengths: 1064, 1310, 1480, 1550, and 1650 nm. The accompanying specification table defines wavelength-dependent operating bandwidths and isolation characteristics.

At 1064 nm, both single-stage and dual-stage configurations are listed. The dual-stage version provides higher isolation, while the 1310, 1480, 1550, and 1650 nm versions are documented as dual-stage configurations. This allows the optical architecture to be selected according to wavelength and isolation requirements.

The product supports both single-axis and dual-axis operation, with PM980, PM1300, and PM1550 fiber options depending on the operating wavelength.

Different fiber protection and package formats are also available, including 250 µm bare fiber, 900 µm loose tube, and 2 mm or 3 mm tubing. FC/APC and FC/UPC connectors are listed, with customized connector configurations also supported.

These characteristics make the PM Circulator suitable for directional optical routing in fiber lasers, optical amplifiers, sensing systems, interferometric systems, quantum optical setups, and coherent communication platforms.

9. Application Scenario

Application 1 — Fiber Laser Systems

In a fiber laser system, reflected optical power can propagate back toward upstream optical components.

The PM Fiber Circulator provides directional routing while maintaining the polarization state, allowing light to be directed through different system ports while suppressing backward propagation.

The available 1064 nm configuration and PM980 fiber option are relevant to the documented fiber laser application.

Application 2 — Optical Amplifier / EDFA

The supplied documentation lists optical amplifiers, including EDFA, as an application.

In this type of system, the circulator can provide defined directional routing between optical paths while isolating backward light. Available 1480 nm and 1550 nm versions allow the device to be configured around the corresponding optical system wavelength.

Application 3 — Optical Sensing and Interferometry

Optical sensing and interferometric systems can require controlled directional propagation together with polarization stability.

The PM Circulator combines one-way optical routing with PM fiber construction, allowing it to be integrated into polarization-sensitive measurement and sensing architectures.

10. Why GracyFiber

GracyFiber focuses on passive optical components and fiber-optic assemblies for optical communication, photonics, sensing, and optical integration applications.

Relevant product capabilities include:

• PM Circulators
• PM Isolators
• PM Fiber Couplers
• PM WDM Components
• PM Fiber Arrays
• Fiber Collimators
• WDM / CWDM / DWDM Components
• Fiber Arrays and FAUs
• MPO/MTP Optical Interconnects

For this PM Circulator family, the supplied product specifications cover multiple operating wavelengths, PM fiber types, stage configurations, polarization-axis configurations, fiber protection formats, package dimensions, and connector options.

11. Related Products

12. Call to Action

Need a PM Fiber Circulator for a laser, amplifier, sensing, or coherent optical system?

Send GracyFiber your required:

• Operating wavelength
• Operating bandwidth
• Single-stage or dual-stage configuration
• Required isolation
• Insertion loss requirement
• Extinction ratio
• Single-axis or dual-axis operation
• PM fiber type
• Fiber protection / tube diameter
• Fiber length
• Connector type
• Optical power
• Application

GracyFiber can review the required configuration before quotation.