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3 Port PM 1310 Circulator
OPTICO three-port polarization-maintaining (PM) optical circulator is a passive optical component that enables unidirectional transmission of light signals between three ports while maintaining the polarization state of the signal. Its primary function is to transmit light from the input port (usually Port 1) to Port 2, then from Port 2 to Port 3, while preventing backflow of light to the previous port.
These circulators are available with central wavelengths of 1064 nm, 1310 nm (O band), or 1550 nm (C band). The fast axis is blocked, so they are designed for light launched on the slow axis. OPTICO can directly manufacture and provide OEM PM circulators with various packaging sizes, multiple wavelength and bandwidth options, and a range of power levels, equipped with different types of connectors.
Three-port PM optical circulators are widely used in fiber optic sensing, laser systems, and polarization-maintaining communication systems, especially in applications that require consistent polarization state and low back reflection, such as fiber lasers, fiber optic sensing systems, and coherent communication systems.
Product Specifications
| Physical Properties | Parameter |
| Work Wavelength | 1064/1310/1550 |
| Directivity |
Port 1->Port 2->Port3 |
| Work bandwidth | λ±20 |
| Isolation | ≥40dB |
| Min isolation@23℃, full wavelength | 25dB |
| Typical insertion loss@23℃ | ≤0.7dB |
| Insertion loss | ≤0.9dB |
| Return loss | ≥50dB |
| PDL |
≤0.2 |
| Max Average Power | 300mW |
| Extinction Ratio |
>22dB |
Product Features
Port 1 → Port 2: The light signal travels from Port 1 to Port 2.
Port 2 → Port 3: The light signal then travels from Port 2 to Port 3.
Port 3 → Port 1 (typically unused): This path is generally avoided to prevent unnecessary back reflections.
- Add-Drop Multiplexing
- Fiber Optic Sensors
- Bidirectional Pumping Bidirectional Signal Transmission Systems
- Coupling In-Line Dispersion Compensation Devices
- Low Insertion Loss: Typically offers low insertion loss, ensuring high transmission efficiency.
- High Isolation: Effectively isolates reflected light between ports, reducing return loss and interference.
- Directionality: Allows light to travel in a specified direction only, ensuring unidirectional signal flow and preventing interference from reflected light.
- Compact Packaging: Designed in a compact, inline package.
- Advanced Manufacturing Process: Epoxy-free optical path.
- High-End Industrial Quality: Available in high-power options for 1064 nm and 1550 nm applications.
Applications
Circulators can also be used to send optical signal in two directions down a single fiber. A circulator is located at both ends of the fiber. Each circulator functions to add a signal in one direction while removing the signal in the other. See the example to the right.
Certificates
Delivery(7-15 Days)
OPTICO offers a range of reliable delivery options, including air freight, sea freight, land freight, and express shipping through trusted providers like FedEx, DHL, and UPS. Whether you need speed, cost-effectiveness, or flexibility, OPTICO has got you covered. Trust OPTICO to get your products where they need to go, safely and on time.
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Mechanical Parameter
| Fiber Type | FCUPC/FCAPC/As custom |
| Package | Steel tube: Φ5.5xL50mm; ABS box:90x20x10mm |
| Fiber Mode | PM Panda Fiber |
| Operating Temperature | -5~+70℃ |
| Storage Temperature | -40~+85 |
| Fiber Length | As Custom requested |
