The polarization-maintaining isolator including 1030 1040 1050 1053 1060 1064nm 1310nm 1480nm 1550nm or others, it is a passive optical device that allows only one-way light to pass through. It uses panda polarization-maintaining fiber and maintains the input light polarization with a high extinction ratio. Polarization maintaining fiber isolators are usually used to protect lasers or amplifiers from back-reflected light. Unifiber provides single stage and dual stage isolator with different isolation levels to meet customer parameter requirements for different scenarios through different cost performance. In addition, it also provides customized services for high-power products.
Features
High Isolation
Low Insertion Loss
High Return Loss
High Extinction Ratio
Optical Path Epoxy Free
Application
Fiber laser
Fiber Amplifier
Laboratory research
Specification
| Parameter | Single stage | Dual stage |
| Operating Wavelength (nm) | 1310, 1480, 1550 or Customized |
| Typical Isolation (dB) | | |
| Minimum Isolation (dB) | ≥30 | ≥46 |
| Typical Insertion Loss (dB) | | |
| Maximum Insertion Loss (dB) | ≤0.60 | ≤0.50 |
| Return loss (In/Out) (dB) | ≥55/55 | ≥55/55 |
| Min. Extinction Ratio(dB) | 18~20 |
| Bandwidth (nm) | ±15 | ±30 |
| Operating Temperature (℃) | -5 ~ +75 |
| Storage Temperature (℃) | -40 ~ +85 |
| Fiber Type | 250μm or 400μm PM Fiber |
| Fiber Length (Min.) | 1 meter each end |
| Dimensions (mm) | Ø5.5xL35 (50mm including rubber boots) |
| Power Handling (mW) | |
| * The above specifications are for device without connectors. |
| |
| ** For devices with connectors, insertion loss will be 0.3dB higher, RL will be 5dB lower and ER will be 2dB lower. |
| Isolator Type | Wavelength | Grade | Pigtail Style | Fiber Length | Package | In/Out Connector |
| PMIS=Single stage | 13=1310nm | P=Premium | 1=Bare Fiber | 1=0.75m | B=Package B | 0=None |
| | | | | |
| PMIU=Dual stage | 14=1480nm | 2=900µm Jacket | 2=1.0m | 1=FC/APC |
| | | | | |
| | 15=1550nm | | 3=1.5m | 2=FC/PC |
| | | | | |
| | LB=L Band | | S=Customer Length | 3=SC/APC |
| | | | | |
| | | | | 4=SC/PC |
| | | | | |
| | | | | 5=ST |
| | | | | |
| | | | | 6=LC |
