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FBT coupler
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1X3 LC/UPC Multi-mode FBT Coupler

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Description:

FBT optical fiber splitter is a type of optical power management device that is fabricated using Fused Biconical Tape technology. 

It features small size, high reliability, cheap cost and good channel-to-channel uniformity, and is widely used in PON networks to realize optical signal power splitting.


Features:

Low Insertion loss

Various Coupling Ratio

Compact Size

  

Specifications:

Coupling Ratio

Insertion Loss(dB)


Tap

Signal

50/50

2.8-3.6

≤3.6

45/55

3.3-3.9

≤3.0

40/60

3.8-4.5

≤2.6

35/65

4.2-5.0

≤2.2

30/70

4.6-5.7

≤1.9

25/75

5.8-6.7

≤1.6

20/80

6.7-7.6

≤1.2

15/85

7.8-9.0

≤0.98

10/90

9.3-11.0

≤0.63

5/95

12.4-14.0

≤0.41

1/99

18.6-21.0

≤0.25

Excess Loss(Typ.)(dB)

0.10

 

PDL(Max.)(dB)

0.15

Operating Wavelength(nm)

1310±40, 1550±40,1310/1550±40,1310/1550/1490±40 or custom wavelength

Directivity(dB)

≥55

Port Configuration

1×2 or 2×2

Note: All the data above does not include connectors

 

Parameter

Unit

Specification

Operating Wavelength

nm

1310±40, 1550±40,1490±10

(1×N)(2×N)


N=3

N=4

N=5

N=6

N=8

N=10    

N=16

N=24

N=32

Fiber Type


Corning SMF-28e

IL(MAX)

dB

5.6

7.1

8.3

9.2

10.6

11.75

14.4

15.6

17.4

Uniformity

dB

0.5

0.7

1.1

1.3

1.5

1.7

1.8

2

2.2

Return Loss

dB

≥55

Directivity

dB

≥55

PDL

dB

 0.2

0.2

0.3

0.3

0.3

0.3

0.4

0.5

0.5

 Note: All the data above does not include connectors. 


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