PBS (Polarization Beam Combiner/Splitter)

The Micro Polarization Beam Combiner/Splitter (Micro PBS) is a device designed to divide a laser beam into two distinct polarization beams. Typically employed in fiber optic communication systems, the Micro PBS serves as a fundamental element in various applications, including polarization management, polarization beam combining, and optical interleaving.

PBS (Polarization Beam Combiner/Splitter)
PBS (Polarization Beam Combiner/Splitter)

Key Characteristics

  • Minimal Polarization Dependent Loss
  • Low Insertion Loss
  • Reduced Polarization Mode Dispersion (PMD)
  • Exceptional Environmental Stability


The Micro Polarization Beam Combiner/Splitter (Micro PBS) has several valuable applications in the field of optics and photonics. Here are some of its key applications:

  • Optical Interleaving
  • Raman Amplification
  • Circulation Control
  • Fiber Optic Sensors
  • Quantum Optics Experiments
  • Biomedical Imaging
  • Optical Isolation
  • Fiber Optic Gyroscopes

Factory Standard


BK7 grade A, optical glass




l/4 l@ 632.8 nm per 25mm or better

Extinction Ratio


Beam Deviation

<3 arc minutes

Principal Transmittance

>98% and Ts<0.5%

Principal Reflectance

Rs>99.5% and Rp<2%


Polarization beamsplitter coating on hypotenuse face,

AR-coatings (R<0.25%) on all input and output face.

Micro Optics, PBS (Polarization Beam Combiner/Splitter)

Avantier Inc. offers PBS as custom optical components that can be manufactured according to varying needs. Please contact us if you’d like to schedule a consultation or request for a quote on your next project.


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