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Home > Fiber Optics > Fiber Optic Cable Assemblies > Fiber Optic Patch Cords > Polarization Maintaining Fiber Patch Cords (PM fiber patch cable, PM fiber patch cord)

Polarization Maintaining Fiber Patch Cords (PM fiber patch cable, PM fiber patch cord)


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:: What Is Polarization?

A polarized lightwave signal is represented by electric and magnetic field vectors that lie at right angles to one another in a transverse plane (a plane perpendicular to the direction of travel). Polarization is defined in terms of the pattern traced out in the transverse plane by the electric field vector as a function of time.

:: Polarization Coordinate System

An explicit coordinate system must be specified in order to unambiguously describe a state of polarization. This is shown in the following illustration.

Fiber Optic Polarization Coordinate System

The z-axis is horizontally oriented in the direction of propagation of the light. The y-axis is vertically oriented pointing up, and the x-axis is horizontally oriented to form a right-handed rectangular coordinate system. Angles are measured with reference to the x-axis, a positive angle indicating the sense of rotation from the x-axis toward the y-axis.

In the following illustration, unpolarized light is filtered by a polarizer to produce horizontal linear light. A quarter-wave retarder is used to resolve the horizontally polarized light into two equal-intensity components that travel at slightly different speeds. For the retarder orientation shown, light emerging from the retarder is right-hand circularly polarized, as seen in the right side illustration.

Fiber Optic Polarization Coordinate System             Fiber Optic Polarization Coordinate System


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Product Code Description Manufacturer Price Stocking Image
S-4-9A-9A-S-1-FIS ( S-4-9A-9A-S-1-FIS ) 1m FC/APC - FC/APC Slow Axis Single Mode PM Patch Cord
Simplex 1 meter FC/APC to FC/APC polarization maintaining patch cord. slow axis alignment, 3.0mm jacket, blue color. (900um buffer and fast axis alignment version also available.) ...
$240.00 In Stock
S-4-9U-9A-S-1-FIS ( S-4-9U-9A-S-1-FIS ) 1m FC/UPC - FC/APC Slow Axis Single Mode PM Patch Cord
Simplex 1 meter FC/UPC to FC/APC polarization maintaining patch cord. slow axis alignment, 3.0mm jacket, blue color. (900um buffer and fast axis alignment version also available.) ...
$228.57 In Stock
S-4-9U-9U-S-1-FIS ( S-4-9U-9U-S-1-FIS ) 1m FC/UPC - FC/UPC Slow Axis Single Mode PM Patch Cord
Simplex 1 meter FC/UPC to FC/UPC polarization maintaining patch cord. slow axis alignment, 3.0mm jacket, blue color. (900um buffer and fast axis alignment version also available.) ...
$217.14 In Stock


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