Description
1550nm PM In-line Phase Shifter
1550nm PM In-line Phase Shifter is built with 45 degree Faraday Rotator and Wave Plate, which can generate a fixed phase difference from forward and back reflection light, it’s widely used in Fiber Laser, Fiber Optic Sensor Optical Imaging field, it features low insertion loss, high extinction ratio, the high power type is available upon request.
| Application: | Features: | ![]() |
| Fiber Laser | Low Insertion Loss | |
| Fiber Optic Sensor | High Extinction Ratio | |
| Optical Imaging | High Power | |
| Lab And Research | High Reliability |
Specification:
| Parameter | Symbol | Value |
Unit |
| Center Wavelength | λ | 1550 |
nm |
| Bandwidth | BW | ±15 | nm |
| Max. Insertion Loss | IL | 0.8 | dB |
| Min. Extinction Ratio | ER | 20 | dB |
| Optical Phase Shifter | π/4, π/2 or π | – | |
| Min. Return Loss | RL | 50 | dB |
| Max. Optical Power (CW) | P | 500 or customized | mW |
| Max. Tensil Load | 5 | N | |
| Fiber Type | PM 1550 Panda fiber | – | |
| Operating Temperature | T | -5~70 | ℃ |
| Storage Temperature | T | -40~85 | ℃ |
| Package Dimension | Φ5.5xL35 | mm |
| Notice: Above specifications are tested at center wavelength without connector in room temperature @23℃. |
| For devices with connectors, IL will be 0.3dB higher, RL will be 5dB lower, ER will be 2dB lower, slow axis is default aligned to the key. |
Drawing:

Ordering Information (Part Number):
| PMPS-WWWW-SS-AA-J-LL-CC |
|||||
| WWWW | SS | A | J | LL | CC |
| Wavelength | Phase Shift | Working Axis | Fiber Jacket | Fiber Length | Connector |
| 1550 – 1550nm | P4 – π/4 | F – Fast Axis Blocked | B – 250um Bare Fiber | 05 – 0.5m | NE – None |
| SSSS – Specify | P2 – π/2 | B – Both Axes Working | 9 – 900um Loose Tube | 08 – 0.8m | FA – FC/APC |
| P1 – π/1 | 2 – 2.0mm Loose Tube | 10 – 1.0m | FU – FC/UPC | ||
| SS – Specify | 3 – 3.0mm Loose Tube | 15– 1.5m | SA – SC/APC | ||
| 20 – 2.0m | SU – SC/UPC | ||||
| SS – Specify | LA – LC/APC | ||||
| LU – LC/UPC | |||||
| SS – Specify | |||||
Example: PMPS-1550-P2-B-9-10-FA is the PN for 1550nm PM In-line Phase Shifter, π/2 Shift, Both Axes Working, 1.0m PM fiber, 900um loose tube, FC/APC




