Polarization Beam Combiner/Splitter,Unlocking Optical Signal Spatiotemporal Transmission

2024-07-20 14:40:30

Polarization Beam Splitter (PBS) and Beam Combiner（PBC) play crucial roles in optics and fiber-optic communication. A PBS is primarily used to couple orthogonal linearly polarized light components of a beam into two separate optical paths, or conversely, to combine two orthogonally polarized beams into a single output beam. Depending on its specific application, a PBS can also be referred to as a Polarization Beam Combiner (PBC).

Principle

The working principle of a PBS is based on the polarization properties of light and the birefringence effect of optical materials. When a beam containing orthogonally polarized light components is incident on a PBS, due to the birefringence property of the optical material, light of different polarization directions is separated into distinct output paths. This process leverages the relationship between the polarization direction of light and the refractive index of the optical material, achieving beam splitting or combining through a precisely designed optical structure.

Characteristics

High Extinction Ratio: A PBS efficiently separates or combines orthogonally polarized light, typically exhibiting a high extinction ratio, meaning that the transmission of one polarization direction in the output port of the other polarization direction is extremely low.

Low Insertion Loss: The additional loss introduced to the optical signal as it passes through the PBS is low, preserving the high intensity and quality of the optical signal.

Good Stability: High-quality materials and precise manufacturing processes ensure that PBSs exhibit high stability and reliability, enabling stable operation in various environments over extended periods.

Multiple Types: Depending on their structure and working principles, PBSs can be classified into various types, such as photonic crystal PBSs, photonic crystal fiber PBSs, silicon nanowire waveguide PBSs, etc.

Applications

PBS/PBC's have a wide range of applications, including but not limited to:

Fiber-Optic Communication: In fiber-optic communication systems, PBSs can be used to achieve polarization-division multiplexing, enhancing the communication capacity of fiber networks. Additionally, they can serve as pump combiners in optical amplifiers, reducing polarization sensitivity and increasing saturation power.

Optical Storage: In optical storage systems, PBSs can separate and combine read/write beams, improving data storage efficiency and accuracy.

Optical Sensing: In fiber-optic sensing, PBSs are employed to construct highly sensitive sensors by detecting changes in the polarization state of optical signals to monitor various physical quantities.

Laser Technology: In laser technology, PBSs facilitate polarization control, beam splitting, and combining, enhancing the performance and stability of laser systems.

Polarization Imaging: In polarization imaging systems, PBSs separate light beams of different polarization directions, enhancing image contrast and clarity.

In summary, as essential devices in optics and fiber-optic communication, PBSs and beam combiners have broad application prospects and significant research value. With continuous technological advancements and expanding applications, the performance of PBSs and beam combiners will continue to improve, providing stronger support for the development of related fields.

Shenzhen optics forest Co.,Ltd specializes in manufacturing polarizing beam splitters (PBS) and combiners (PBC) for a range of wavelengths, including 1310nm, 1550nm, and 1064nm.

Here's our PBS/PBC specifications sheet for 1064nm, 1310nm, 1480nm, and 1550nm wavelengths, outlining key technical details

Specifications
Parameter	Unit	Value
Center Wavelength	nm	1064	1310, 1480 or 1550
Operating Wavelength Range	nm	±20	±30
Typ. Insertion Loss at 23°C	dB	≤0.6	≤0.4
Max. Insertion Loss at 23°C	dB	≤0.8	≤0.6
Min. Return loss（input/output）	dB	≥50/50
Min. Extinction ratio at 23°C	dB	≥22(for PBS)
Min. Directivity	dB	50
Max. Optical Power (CW)	mW	500
Max. Tensile Load	N	5
Fiber Type（Input-output）	-	Port 1& Port 2:PM Fiber Port 3:PM fiber or normal SM fiber
package dimensions	mm	Ф5.5*55
Operating Temperature	°C	-5 to +70
Storage Temperature	°C	-40 to +85

Feel free to contact us for inquiries by phone or email!

E mail：sales@of-gl.com

Prev: Accurate polarization,efficient transmission:Unveiling the black technology of PM fiber couplers

Next: 1064nmPolarization Beam Combiner/Splitter

Polarization Beam Combiner/Splitter,Unlocking Optical Signal Spatiotemporal Transmission

Get Quote Now