Maintaining Bias 3-port Circulator
The Maintaining Bias 3-Port Circulator is a high-performance polarization-maintaining optical component designed for applications requiring low insertion loss, high isolation, and minimal polarization-dependent loss. It features an epoxy-free optical path for enhanced long-term stability and reliable signal directionality from Port 1 to Port 2 to Port 3. Operating at key wavelengths such as 1310 nm, 1550 nm, and 1480 nm, this circulator offers high isolation (≥50 dB typical) and low insertion loss (0.7 dB typical). It is widely used in optical amplifiers, metro area networks, wavelength add/drop modules, dispersion compensation, and bi-directional communication systems. Available with PM fibers, multiple connector options, and various fiber lengths to support flexible system integration.
Description
Product Features & Applications
| Features | Applications |
| Low Insertion Loss | Optical Amplifier |
| Wide Pass Band | Metro Area Network |
| Low PDL | Wavelength Add/Drop |
| High Stability and Reliability | Dispersion Compensation |
| Epoxy Free on Optical Path | Bi-Direcation Communication |
Performance Specifications
| Parameter | P Grade | |
| Configuration | Port 1 to Port 2 to Port 3 | |
| Channel Spacing（nm） | 1310、 1550、1480±10 | |
| Isolation (dB) | Typical | 0.7 |
| Maximum | 0.9 | |
| Typical Isolation (dB) | ≥50 | |
| Minimum Isolation (dB) | ≥40 | |
| Extinction ratio（dB） | ≥20 | |
| Working axis | uniaxial-biax | |
| Cross Talk (dB) | ≥50 | |
| Polarization Dependent Loss (dB) | ≤0.15 | |
| Directivity 1-3(dB) | >50 | |
| Return Loss（dB） | ＞45 | |
| Return Loss（dB） | ≥50 | |
| Maximum Power Handling (mW) | 500 | |
| Opterating Temperature (℃) | -20~+75 | |
| Storage Temperature (℃) | -40~+85 | |
| Package dimension (mm) | Φ5.5xL38、Φ5.5xL50 | |
| Package dimension (mm) (ABS box) | 90x20x10 | |
Ordering Information
| Product | Wavelength | Fiber Type | Connector | Fiber Length |
| 3=3 port | 850nm | 1=Bare fiber | FC/PC | 0=0.5m |
| 4=4 port | 1310nm | 2=PM1550 | FC/APC | 1=1m |
| 1550nm | 3=PM1310 | SC/PC | 2=2m | |
| 980nm | SC/APC | ect. | ||
| ect. |
