Feiyi OEO PM Beam Combiners/Splitters: Foundational Components for Polarization-Critical Systems
1. Product Overview: Precision in Polarization Control
Feiyi OEO’s Polarization-Maintaining (PM) Beam Combiners/Splitters are passive fiber optic components engineered for one fundamental task: to precisely manipulate light based on its polarization state. They either combine two orthogonally polarized beams into a single output or split a single input into its two orthogonal polarization components.
These devices are characterized by high extinction ratio (ER), low insertion loss (IL), and excellent isolation, ensuring minimal signal degradation and maximum polarization purity. Available in standard wavelengths from 780nm to 1950nm and power handling up to 10W, they are the reliable backbone of systems where polarization integrity is non-negotiable.
2. Core Configurations: 1×2 vs 2×2
The choice between a 1×2 and a 2×2 configuration is dictated by your system’s optical circuit design. The key differences are summarized below:
| Feature | 1×2 Combiner/Splitter | 2×2 Combiner/Splitter |
|---|---|---|
| Port Configuration | 1 input port, 2 output ports (or vice-versa). | 2 input ports, 2 output ports. |
| Primary Function | Combining: Merging two polarized inputs. Splitting: Dividing one input into two polarization-separated outputs. | Routing & Interferometry. Enables balanced, bi-directional light travel, essential for constructing interference-based circuits like the Sagnac loop. |
| Ideal For | Pump/signal combining in lasers, basic polarization division, signal tapping in sensing. | Fiber Optic Gyroscopes (FOGs), coherent detection systems, advanced polarization multiplexing. |
3. Selection Guide: Matching the Component to Your Application
Selecting the right PM Combiner/Splitter involves a three-step decision process focused on your technical requirements:
Beyond the core choice, finalize your specification by defining:
- Power Handling: Ranging from 0.3W to 10W for low-power sensing or high-power laser systems.
- Fiber Type: Options include PM980, PM1300-XP, PM1550-XP, and others to ensure perfect modal and polarization match.
- Connector: FC/PC, FC/APC, SC/PC, SC/APC available to integrate seamlessly into your existing setup.
4. Key Applications
- Fiber Optic Gyroscopes (FOGs): The 2×2 device is the core of the Sagnac interferometer, creating the sensitive loop that measures rotation. Its stability directly defines the gyro’s bias performance and accuracy.
- Coherent Communication & Sensing: Used for polarization multiplexing/demultiplexing and in interferometric sensing systems (DAS, DTS) to extract phase-based signals.
- High-Stability Laser Systems: Manages polarization within laser cavities or for external pump-probe setups, ensuring predictable and pure output.
Engineer with Confidence. Partner with Feiyi OEO.
Our components are more than just parts; they are validated solutions. Each undergoes stringent reliability testing—thermal shock, damp heat, and mechanical stress—to ensure they perform in the most demanding environments, from deep-sea sensors to aerospace navigation.
- Explore the Product Portfolio: PM Beam Combiner/Splitter Series
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- Contact for Technical Consultation & Custom Solutions:
Lily | lily@feiyi-oeo.com | +86 132 8606 2561
Feiyi OEO – Your Precision, Our Promise.