FBT Coupler 1*2 steel tube type

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FBT Coupler 1*2  steel tube type 

Applications:

Long-haul telecommunications 

CATV systems & Fiber sensors 

Local area network

Performance Specifications: 

Item

Standard Multimode Couplers(50:50)

Grade

P

A

Max Excess Loss 

dB

0.7

1

Uniformity (Max.) 

dB

0.7

1

Thermal Stability

dB

«0.2

«0.25

Polarization Sensitivity 

dB

0.1

0.15

Directivity

dB

»35

Reflectance

dB

»35

Operating Temperature

°C

-5~+70

Storage Temperature

°C

-40~+85

 Coupling Ratio/Insertion Loss Conversion Chart:

Coupling Ratio(%/%)

Insertion Loss(dB)

Premium

A Grade

50/50

3.9

4.3

40/60

4.9/3.0

5.4/3.5

30/70

6.2/2.3

6.7/2.7

20/80

8.0/1.8

8.7/2.1

10/90

11.3/1.25

12.2/1.6

5/95

14.9/0.9

16.2/1.3

1/99

22.1/0.7

22.7/1.0