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
| 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 |
| Cost Effective | Instrumentation |
| 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、W) | 300-2W | |||
| Opterating 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端口 4=4端口 |
1060nm | 1=Bare fiber 2=900umLoose tube |
FC/PC FC/APC SC/PC SC/APC ect. |
0=0.5m 1=1m 2=2m ect. |




