Attenuating Splitter Branching Fiber-optic Patch Cords

The Splitter Branching Fiber-optic Patch Cord with an integrated attenuating filter are ideal for applications where optical power coupled into a fiber is too high.   

Fabrication of this product is similar to the standard splitter branching fiber-optic patch cords, with an additional ND filter between the splitting junction. Addition of attenuating filter does not affect light distribution inside the optical fiber, only transmission is reduced

Note: 

• For attenuating patch cords, optical transmission is specified for visible light, and measured at a 465 nm wavelength. Please note that for a 405 nm wavelength (UV), the transmission value is about half of the specification for visible light.

The final power output from SBP-ATTN is attenuation factor times the output from standard SBP. For example, if we have 2x 200 µm, coupling into each output is about 16% because the input diameter core is 480 µm. If we add a 5% attenuation filter, coupling into each output will be 0.8% in reality (16% x 5% = 0.8%). 

This approach uses a 50 mm long metal tube with a 6.35 mm diameter to protect the passage from 1 to several fibers. The length of patch-cord from the metal tube to the patch-cord split, called the central jacket, can be protected using a different jacket type. Splitter patch cords are not suitable for short cables less than 30 cm long. This version allows improved splitting of laser light over older models. In all other applications, the Splitter Branching Patch Cords maintain the same high-quality performance as our legacy Standard Branching Patch Cords.

Minimum total cable length is 35 cm.

• The Type-A patch cords have no central jacket, with the splitter starting at the metal tube. The split is done 17.5 cm from the input.

• The Type-B patch cords have a central jacket covering the length between the metal tube and the splitter. The split is done at 15 cm from the output.