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Introduce Highly stability 1550/1064nm Polarization Beam Combiner/Splitter

Date: 2015-07-30 Source: Read: 0

   Polarization Beam Combiner/Splitter  can  Combine or Split Orthogonal Polarizations in Fiber Optic Systems, The most common application is to combine the light of two pump lasers into one single fiber to double the pump power in EDFA or Raman Amplifier. The device can also be used as a beam splitter.

For the 3-ports Polarization Beam Combiner/Splitter , it has two types of optical fiber,  one type  is input  fiber  is SM fiber , The other  two ports are polarization-maintaining fiber,  Another  type ,  all  ports  are polarization-maintaining fiber.

    First let me introduce SM-PM 3-ports Polarization Beam Combiner/Splitter

They are designed to either combine two orthogonal polarizations into a single fiber or split a single input into its orthogonal linear polarizations through two fiber outputs. The devices on this page feature two legs of polarization-maintaining (PM) fiber on one side of a calcite prism and a single mode (SM) fiber on the other. The legs on the side with the two PM fibers have the slow axis of the fiber aligned for maximum transmission of one polarization state.

   This PBC can also be used in reverse to combine two orthogonal polarizations from the PM fiber legs into one single mode output. Light incident on ports 1 and 2 should be aligned to the slow axis. Light incident at ports 1 and 2 aligned to the fast axis of the fibers will refract differently through the prism and will not exit port 3!




Typ. Insertion Loss at 23°C

Min. Extinction ratio at 23°C

package dimensions


1310, 1480 or 1550+/-40nm









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