1550nm 1x2 Polarization Beam Combiner/Splitter
P/N: FIR-1550-12-PBC/PBS|SKU: 10314
Total Price
$330.00 / unit
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1550nm 1x2 Polarization Beam Combiner (PBC)/Polarization Beam Splitter (PBS)
Firsol 1550nm 1x2 Polarization Beam Combiner/Splitter is a passive fiber optic component designed to either split an optical signal into two orthogonally polarized outputs or combine two orthogonally polarized input signals into a single output fiber. Operating at a center wavelength of 1550nm with a ±40nm wavelength range, it provides low insertion loss of ≤0.6dB, a high extinction ratio of ≥22dB, return loss of ≥50dB, and directivity of ≥50dB. Multiple CW optical power options from 0.5W to 10W are available to support standard and high-power applications. Ports 1 and 2 use polarization-maintaining fiber, while Port 3 can be configured with single-mode fiber or an all-PM fiber structure. With high stability and reliability, this device is suitable for fiber lasers, EDFAs, coherent optical communication systems, fiber optic sensing, and other polarization-maintaining fiber applications.
Specifications
Parameter | Unit | Value |
|---|---|---|
Center Wavelength | nm | 1550 |
Operating Wavelength Range | nm | ±40 |
Insertion Loss | dB | ≤0.6 |
Return Loss | dB | ≥50 |
Extinction Ratio | dB | ≥22 |
Directivity | dB | ≥50 |
Max Optical Power (CW) | W | 0.5/1/2/5/10 |
Fiber Type | - | Port 1 and Port 2 PMF; Port 3 SMF or All PMF |
Tensile Load | N | 5 |
Package Dimensions | mm | Φ5.5 x L35 (<5W)/14 x 12 x 8 (>5W) |
Operating Temperature | °C | -5 to +70 |
Storage Temperature | °C | -40 to +85 |
Notes: Tested at 25 °C. Data exclude connectors. Adding connectors will increase insertion loss by approximately 0.3 dB, reduce return loss by 5 dB, and decrease extinction ratio by 2 dB. The fiber slow axis is aligned to the key by default.
Dimensions
FAQ
- Q: What is the difference between a Polarization Beam Splitter (PBS) and a Polarization Beam Combiner (PBC)?
- A: A Polarization Beam Splitter (PBS) separates orthogonal polarization states into two output ports, while a Polarization Beam Combiner (PBC) combines two orthogonally polarized input signals into a single output fiber. In most fiber optic systems, the same device can operate as either a PBS or a PBC depending on the direction of light propagation.
- Q: What does “Slow Axis Aligned to Port 1 Slow Axis” mean?
- A: It means the slow axis of Port 3 PM fiber is aligned parallel to the slow axis of Port 1 PM fiber. This configuration is commonly used in PM fiber laser systems and polarization-sensitive applications requiring consistent polarization orientation.
- Q: What does “Slow Axis Aligned 45° to Port 1 Slow Axis” mean?
- A: This option means the slow axis of Port 3 PM fiber is rotated 45° relative to the slow axis of Port 1. It is commonly used in polarization control, coherent systems, interferometers, and specialized PM fiber applications.
- Q: What is the difference between SMF output and All-PM output?
- A: SMF output configurations are more cost-effective and suitable for general applications. All-PM output configurations preserve polarization state throughout the entire optical path and are recommended for polarization-sensitive systems.
Questions & Answers
Can this device be used as both a splitter and a combiner?
Yes. PBS/PBC devices are reciprocal passive optical components. The same device can operate as either a polarization beam splitter or polarization beam combiner depending on the optical signal direction.
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