FOLINK's Multimode Fiber Optic Coupler(MM FBT Coupler ) are fabricated from multimode fibers with core diameters of 50um ,62.5um or 100um. Standard multimode couplers are commonly used in short distance communications with LED sources operating at 1310nm or 850nm. Multimode couplers are wavelength independent over a broad range of wavelengths (600nm to 1610nm) with uniform modal power distribution launch condition, multimode tree/star couplers NX4(n=1,2,4) NX8(n=1,2,8) NX16(n=1,2,16) port ratios are available.
Low Excess Loss
Uniform Power Splitting
Excellent Environmental & Mechanical Stability
Applications
Long-haul Telecommunications
CATV Systems & Fiberoptic Sensors
Local Area Network
FTTH & LAN
Performance Specifications
Parameter |
Multimode Standard Fiber Couplers |
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Coupling Ratio（%） |
50/50 |
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Grade |
P Grade |
A Grade |
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Excess Loss (Typical)（dB） |
0.7 |
1.0 |
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Max.lnsertion Loss（dB） |
4.2 |
4.5 |
|
Uniformity (Max.)(dB) |
0.6 |
0.8 |
|
Directivity(Min.)(dB) |
35 |
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Operating Wavelength（nm） |
800-1600 |
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Central Wavelength (nm) |
850 or 1310 or 1550 |
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Operating Temperature(℃) |
-20~+85 |
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Fiber Type |
Corning multimode 50/125, 62.5/125 |
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Fiber Pigtail Length（m） |
1 m or custom length |
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Port Configuration |
1×2 or 2×2 |
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Dimensions (mm) |
Package D,E,G |
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Coupling Ratio/insertion Loss Conversion Chart
Coupling Ratio |
lnsertion Loss |
|
Premium |
A Grade |
|
40/60 |
5.2/3.3 |
5.6/3.7 |
30/70 |
6.5/2.6 |
7.0/3.0 |
20/80 |
8.4/2.0 |
8.8/2.5 |
10/90 |
11.8/1.5 |
12.3/2.0 |
*Measured under the stable mode condition with LED light source.
Package Dimensions & Pigtail Style
Package Dimensions: | |
Package D：3mm x 45mm stainless steel tube |
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Package E：3mm x 54mm stainless steel tube |
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Package G：10mm x 20mm x 90mm case |
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Pigtail Style: | |
Package D： |
250um bare fiber |
Package E |
250um bare fiber or 900um loose tube |
Package G： |
2mm,3mm cable or 900um loose tube |
