Gracyfiber’s PM Circulator is a 3-port device that guides light from Port 1 → Port 2 → Port 3 — with no backward flow. Built with precision-aligned PM fiber, it preserves polarization state while blocking reflections and crosstalk across key wavelengths: 1064nm, 1310nm, 1480nm, 1550nm, and 1650nm.
Available in single or dual stage designs, this compact component offers low loss, high isolation, and stable performance — ideal for laser systems, telecom, sensing, and quantum applications where signal direction and polarization matter.
| Parameter | Unit | Value | |||||||
| Port Type | – | 3 Port | |||||||
| Operating Wavelength | nm | 1064 | 1310 | 1480 | 1550 | 1650 | |||
| Operating Bandwidth | nm | ±5 | ±30 | ±30 | ±30 | ±20 | |||
| Stage | – | Singe Stage | Dual Stage | Dual Stage | |||||
| Typ. Insertion Loss | Max | nm | 1.8 | 3.0 | 0.7 | ||||
| Insertion Loss | Max | nm | 2.1 | 3.5 | 0.9 | ||||
| Peak Isolation | Min | nm | 30 | 40 | 50 | 50 | 50 | 45 | |
| Typ.Isolation | Min | nm | 25 | 35 | 40 | 40 | 40 | 35 | |
| Extinction Ratio | Min | dB | 20 | ||||||
| Operating Axis | – | Single Axis or Dual Axis | |||||||
| Return Loss | Min | dB | 50 | ||||||
| Crosstalk | Min | dB | 50 | ||||||
| Power Handing | Max | mW | 300 | ||||||
| Fiber Type | – | PM980 | PM1300 | PM 1550 | |||||
| Fiber Coating | mm | 0.25 / 0.9/2.0/3.0mm Red/Blue loose tube | |||||||
| Fiber Length | cm | 100 | |||||||
| Connector | – | FC/APC,FC/UPC，or Customized | |||||||
| Dimensions (HxWxD) | 250μm Bare Fiber | mm | φ5.5×35 | ||||||
| 900μm Loose Tube | mm | φ5.5×38 | |||||||
| 2mm/3mm Tube | mm | 90×20×10,100×80×10 | |||||||
| Operating Temperature | °C | -5~65 | |||||||
| Storage Temperature | °C | -40~85 | |||||||
Remark:
- Above specifications are for devices without the connectors.
- For devices with connectors, IL will be 0.3dB higher, RL will be 5dB lower, and ER will be 2dB lower.
- The PM fiber and the connector key are aligned to the slow axis. fast axis is blocked.
Part Number Configuration
