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
- 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%).
Optical Fiber Core Diameter
( μm )
Number of Output Fibers
Internal Input Optical Fibre Core Diameter ( μm ) Coupling into Each Output† 100 2x 240 16% x T 3x 240 16% x T 4x 480 4% x T 7x 480 4% x T 200 2x 480 16% x T 3x 480 16% x T 4x 730 7% x T 7x 730 7% x T 400 2x 960 16% x T 3x 960 16% x T 4x 960 16% x T 7x 1460 7% x T †T refers to % transmission.
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 (AX identifier) 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 (BX identifier) 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.
NA Standard Jacket
Core Cladding Buffer Silica 50 125 250 0.22 A1 or B1 50/125-0.22 60 65 75 0.37 A1 or B1 60/65-0.37 62.5 125 250 0.27 A1 or B1 62.5/125-0.27 100 110 125 0.22 A1 or B1 100/110-0.22 100 110 125 0.37 A1 or B1 100/110-0.37 105 125 250 0.22 A1 or B1 105/125-0.22 200 220 240 0.22 A1 or B1 200/220-0.22 200 220 245 0.37 A1 or B1 200/220/900-0.37 200 230 500 0.57 A1 or B2 200/230-0.57 400 440 480 0.22 A1 or B2 400/440-0.22 400 440 470 0.37 A1 or B2 400/440-0.37 400 430 730 0.48 A2 or B2 400/430-0.48 400 430 730 0.57 A2 or B2 400/430-0.57 Plastic 240 250 - 0.63 A1 or B1 240/250-0.63 480 500 - 0.63 A1 or B2 480/500-0.63
Identifier Central Jacket Split Jacket Jacket Combination
A1 None 900 900 A2 None 1100 1100 A3 None 2000 2000 A4 None 3000 3000 A5 None LWMJ LWMJ A6 None ARMO ARMO B1 900 900 900/900 B2 2000 1100 2000/1100 B3 LWMJ LWMJ LWMJ/LWMJ B4 LWMJ 900 LWMJ/900 B5 LWMJ 1100 LWMJ/1100 B5 ARMO ARMO ARMO/ARMO
Termination Codes for Fiber-Optic Patch cords Description Product Termination Code FC Connector with Zirconia Ferrule
FC Connector with Metal Ferrule
FC/APC Connector with Zirconia Ferrule*
FC/APC Connector with Metal Ferrule*
SMA Connector with Metal Ferrule SMA Zirconia Ferrule OD 1.25 mm ZF1.25 Zirconia Ferrule OD = 1.25 mm with Flange
Zirconia Ferrule OD = 1.25 mm with Peek Flange
Metal Ferrule OD 1.25 mm MF1.25 Zirconia Ferrule OD = 2.5 mm ZF2.5 Zirconia Ferrule OD = 2.5 mm with Flange
Zirconia Ferrule OD = 2.5 mm with Peek Flange
Metal Ferrule OD = 2.5 mm MF2.5 Slim Magnetic Connector SMC M3 Connector CM3 M3 Connector Peek Plastic CM3(P) M2 Connector CM2
Termination Codes for Dual Fiber-Optic Patch cords (1 connector side) Description Product Termination Code Dual Ferrule with a guiding pin
Pitch from 0.7 mm to 1.7 mm
DF□.□ Guiding Socket*
Pitch from 0.7 mm to 1.7 mm
Splitter Branching Patch Cord
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