Description:
The Polarization Maintaining Isolator is a two port micro-optic device built with PM panda fiber. The PM isolator features low insertion loss, high isolation, high extinction ratio and high reliability and stability. The device guides optical light in one direction and eliminates back reflection and back scattering in the reverse direction. The device can be built with bare fiber, or 900um jacket cable. The PM Panda Fiber Isolator is widely used in amplifier systems, fiber optic systems and fiber lasers.
If you do not see a standard isolator that meets your needs, we welcome the opportunity to review your desired specification and quote a custom isolator. Requests for custom fiber pigtails, different wavelengths and handling power of operation or other specific needs will be readily addressed.
Specification:
| Parameter | Unit | Value | ||||
| Rank | Single stage | Double stage | Single stage | Double stage | ||
| Central wavelength | nm | 2050,2000, 1950 | 1550,1480,1310 | |||
| Operating wavelength range | nm | ±20 | ||||
| Typical peak Isolation @23°℃ | dB | 20 | 30 | 42 | 58 | |
| Minimum isolation @23℃ | dB | 18 | 28 | 28 | 45 | |
| Typical insertion loss@23℃ | dB | 0.8 | 1.0 | 0.4 | 0.5 | |
| Maximum insertion loss@23℃ | dB | 1.2 | 1.3 | 0.55 | 0.65 | |
| Minimum extinction ratio@23℃ | Both axis working | dB | 18 | 20 | ||
| Fast axis blocked | dB | 20 | 25 | |||
| Minimum return loss(input/output) | dB | 50/50 | ||||
| Maximum optical power (CW) | mW | 500 | ||||
| Fiber type | PM Panda fiber | |||||
| Maximum tensile load | N | 5 | ||||
| Operating temperature | ℃ | 0~+70 | ||||
| Storage temperature | ℃ | -40~+85 | ||||
*Above specifications are for devices without the connectors.
*For devices with connectors, Power Handling will be 1W, 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.
Package Dimensions:

Order Information:
In-Line Polarization-Maintaining Isolator,
Wavelength, Stage, Working Axis, Package Dimension,
Fiber Type, Pigtail Diameter, Length, Connector, Power Handling
Example:
In-Line Polarization-Maintaining Isolator,
1550nm, Single Stage, Both Axis Working, φ5.5x35mm,
PM1550-XP, 0.9mm, 1m, FC/APC, 500mW