3-port 850nm980nm circulator
The 3-Port 850nm/980nm Circulator is a cost-effective and reliable optical component designed for applications requiring low insertion loss and stable signal routing. Operating at wavelengths of 850±20 nm and 980±20 nm, it features typical insertion loss of 1.3 dB and high isolation of up to 25 dB. With low polarization-dependent loss (≤0.2 dB) and high return loss (≥50 dB), this circulator ensures efficient performance in optical amplifiers, pump laser sources, fiber optic sensors, and test instrumentation. Available in compact package sizes (Φ5.5×L38 or L50) with bare fiber or 900µm loose tube options, multiple connector types, and various fiber lengths for flexible integration.
Description
Product Features & Applications
| Features | Applications |
| Low Insertion Loss | Optical Amplifier |
| Wide Pass Band | Pump Laser Source |
| Low PDL | Fiber Optic Sensor |
| High Stability and Reliability | Test and Measurement |
| Epoxy Free on Optical Path | Fiber Optic Instrument |
Performance Specifications
| Parameter | Specification | |
| Operating Wavelength (nm) | 980±20、850±20 | |
| Isolation (dB) | Typical | 25 |
| Maximum | 20 | |
| Insertion Loss (dB) | Typical | 1.3 |
| Maximum | 1.8 | |
| Cross Talk (dB) | 45 | |
| Polarization Dependent Loss (dB) | ≤0.2 | |
| Return Loss (dB) | ≥50 | |
| Maximum Power Handling (mW) | 300-2W | |
| Operating Temperature (℃) | 0~+50 | |
| Storage Temperature (℃) | -40~+85 | |
| Package Dimension (mm) | Φ5.5xL38、Φ5.5xL50 | |
Ordering Information
| Product | Wavelength | Fiber Type | Connector | Fiber Length |
| 3=3 port | 1060nm | 1=Bare fiber | FC/PC | 0=0.5m |
| 4=4 port | 2=900um Loose tube | FC/APC | 1=1m | |
| SC/PC | 2=2m | |||
| SC/APC | ect. | |||
| ect. |




