.

FBT Coupler

TS Communicationmanufacture and provide a wide breadth of FBT couplers, which includes SM standard coupler, dual-window coupler, three-window coupler, wideband coupler with low insertion loss and high performances. The FBT couplers are available with coupling ration ranging from 1:99 to 50:50. Customized specifications are basically available.

FBT Coupleris a type of splitter which is based on fused biconical taper technology. The technology is widely accepted and adopted in the PON solution. FBT or fused biconical taper is a traditional technology that two fibers are twisted and fused together under high temperature while the device is being elongated and tapered.

Features of FBT Coupler

Passed Telcordia GR-1221-CORE, and 85℃, 85%RH test up to 1500 hours

Low extra loss

Specifications of FBT Coupler

1×2 Single Mode Coupler(SMC)

Wavelength

nm

1310,1550,1310&1550

Bandwidth

nm

±20,±40

Coupling Ratio

50/50

40/60

20/80

10/90

Grade

P

S

P

S

P

S

P

S

Insertion Loss

dB

Max

Uniformity

dB

Max

/

/

/

/

/

/

PDL

dB

Max

Return Loss

dB

≥50

Operating Temperature

-20~75

1×2 Tap Coupler(WTC)

Wavelength

nm

1550 or on Request

Bandwidth

nm

±20

Coupling Ratio

1/99

2/98

5/95

Grade

P

S

P

S

P

S

Insertion Loss

dB

Max

PDL

dB

Max

Return Loss

dB

≥50

Operating Temperature

-20~75

Three-Windows Couple

Wavelength

nm

1310&1490&1550

Bandwidth

nm

1310±40,1490±10,1550±40

Coupling Ratio

50/50

40/60

20/80

10/90

Grade

P

S

P

S

P

S

P

S

Insertion Loss

dB

Max

4

Uniformity

dB

Max

/

/

/

/

/

/

PDL

dB

Max

Return Loss

dB

≥50

Operating Temperature

-20~75

(TWC)1×N Monolithic Single Mode Couple(MSC)

Wavelength

nm

1310,1550 or on Request

Bandwidth

nm

±20

Coupling Ratio

1×3

1×4

Grade

P

S

P

S

Insertion Loss

dB

Max

7

Uniformity

Max

dB

Max

PDL

Max

dB

Max

Return Loss

dB

≥50

Operating Temperature

-20~75



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