Polarization Beam Combiner & Splitter
Product Overview
A Polarization Beam Splitter (PBS) and a Polarization Beam Combiner (PBC) are a pair of optical devices with reciprocal functions, used to separate or combine the two orthogonal polarization components (typically P‑polarization and S‑polarization) from unpolarized light. In simple terms, they act as a "polarization splitter/combiner."
Polarization Beam Splitter (PBS): Splits an incident beam containing arbitrary polarization states into two linearly polarized beams with mutually perpendicular polarization directions.
Polarization Beam Combiner (PBC): Combines two linearly polarized beams with mutually perpendicular polarization directions into a single beam.
Key Point: The functions of the two devices are completely reciprocal. A PBS used in reverse effectively becomes a PBC, and vice versa.
Features
1. High Extinction Ratio, Low Insertion Loss
2. High Return Loss
3. High Stability and Reliability
Applications
1. Fiber Lasers, Fiber Sensors
2. Communication Systems, Test Instruments
3. Optical Amplifiers, Polarization‑Maintaining Optical Systems
Technical Specifications
| Parameter | Unit | Specification |
| Operating Wavelength | nm | 1310±40，1480±40，1550±40 |
| Insertion Loss | dB | ≤0.6 |
| Extinction Ratio | dB | ≥20 |
| Return Loss | dB | ≥50 |
| Input Polarization Direction | — | Slow axis |
| Operating Power | mW | ≤500 |
| Tensile Load | N | ≤5 |
| Operating Temperature | ℃ | -5 ~ +70 |
| Storage Temperature | ℃ | -40 ~ +85 |
| Fiber Type | — | Ports 1 and 2 are polarization-maintaining fiber, Port 3 is single-mode fiber |
| or all three ports are polarization-maintaining fiber, or all three ports are single-mode fiber. | ||
| Package Dimensions | mm | Ф5.5×L35 |
Ordering Information
| Product Name | Center Wavelength | Fiber Type | Pigtail Tubing | Fiber Length | Connector |
| S = 分束器 （Splitter） |
31=1310nm | 1 = Ports 1 and 2 are Panda-type polarization-maintaining fiber, Port 3 is SMF-28 single-mode fiber. | B=250um bare fiber | 1 = 1.0 m | 0=NO |
| C = 合束器 （Combiner） |
48=1480nm | 2 = All ports are Panda-type polarization-maintaining fiber. | L=900um tube | 2 = 1.5 m | 1 = FC/PC |
| 55=1550nm | 3 = All ports are SMF-28 single-mode fiber. | S=specified | 2 = FC/APC | ||
| 3 = SC/PC | |||||
| 4 = SC/APC | |||||
| 5 = LC/PC | |||||
| 6 = LC/APC | |||||
| 7 = ST | |||||
| S=specified |
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ꁇBackbone network
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ꁇMan/private network
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ꁇAccess network
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ꁇCore network
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ꁇSwitches
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ꁇOptical Transceivers
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ꁇNetwork
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ꁇLaser and sensing
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ꁇOptical Fiber Sensing
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ꁇOptical Component
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ꁇFiber Optic Patch Cord
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ꁇOptical Amplifier
