FBT Singlemode Standard Coupler

FBT Singlemode Standard Coupler

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FBT Singlemode Standard Coupler

Fused Biconic Taper (FBT) coupler, also be called FBT splitter, based on the traditional technology, it is to bundle together two or more optical fibers, and then pull the cone machine melt stretching, and real-time monitoring the change of the ratio, spectral ratio requirements after melt stretching, one side retain a single fiber (the rest of the cut) as input, the other end is a multi-channel output.

As one of the key components for GPON FTTx networks, optical splitters can be placed in the Central Office or in one of the distribution points (outdoor or indoor) because the FBT coupler are highly stable for multiport optical signal splitting with low insertion loss. FBT couplers are designed for power splitting and tapping in telecommunication equipment, CATV network, and test equipment

OMC’s FBT Singlemode coupler 1X2 2X2 offer very low insertion loss, low polarization dependence and excellent environmental stability Accurate coupling ratio from 50/50 to 1/99 and fiber type 250um bare fiber, 3mm and 900um loose tube fiber are available with very tight uniformity. Singlemode standard coupler and wideband coupler components find extensive application to perform power splitting and monitoring functions in all kinds of optical communication systems.

Key Features

  • Low insertion loss
  • Low polarization dependent loss
  • High Return Loss Optional
  • Split Ratio 20/80, 40/60. (50/50 as default.)
  • Compact for small application areas like in closure or splice trays
  • Wide Operating Temperature and Wavelength
  • Excellent Environmental & Mechanical Stability
  • Qualified under Telcordia GR-1221 and GR-1209 High Quality Plastic ABS Box

Applications

  • FTTX (FTTP, FTTH, FTTN, FTTC)
  • Passive Optical Networks (PON)
  • Local Area Networks (LAN)
  • CATV Systems Amplifying,
  • Monitoring System

Performance Specifications

Single Standard Couplers

Grade

P Grade

A Grade

Coupling Ratio(%)

50/50

50/50

Excess Loss (Typical)(dB)

0.07

0.1

Maximum insertion loss(dB)

3.4

3.5

Polarization Sensitivity (dB)

0.15

0.2

Operating Wavelength(nm)

1310,1480,1550 or custom wavelength

Single Wideband Couplers

Grade

P Grade

A Grade

Coupling Ratio(%)

50/50

50/50

Excess Loss (Typical)(dB)

0.07

0.1

Maximum lnsertion loss(dB)

3.4

3.6

Polarization Sensitivity (dB)

0.15

0.2

Operating Wavelength(nm)

1310±40,1550±40,or custom wavelength

Coupling Ratio(%)

1~50

Directivity (dB)

≥55

Operating Temperature(℃)

-20~+80

Storage Temperature(℃)

-40~+85

Fiber Type

SMF-28

Fiber Pigtail Length(m)

1

Port Configuration

1×2 or 2×2

Dimensions (mm)

Package D,E,F,G

Coupling Ratio/insertion Loss Conversion Chart

Coupling Ratio

lnsertion Loss

P Grade

A Grade

40/60

4.4/2.5

4.6/2.8

30/70

5.6/1.8

6.0/2.0

20/80

7.4/1.1

7.7/1.3

10/90

10.8/0.6

11.6/0.8

5/95

14.2/0.4

14.6/0.5

2/98

18.5/0.2

19.0/0.3

1/99

21.0/0.2

21.5/0.3

The relation picture of Insertion Loss & WavelengthTemperature

 11

Package Dimensions & Pigtail Style

Package Dimensions:

Package D:

3mm x 45mm stainless steel tube

Package E:

3mm x 54mm stainless steel tube

Package F:

3mm x 60mm stainless steel tube

Package G:

10mm x 20mm x 90mm case

Pigtail Style:

Package D,E:

250um bare fiber

Package F

250um bare fiber or 900um loose tube

Package G:

2mm,3mm cable or 900um loose tube

Order Information

A

Port Number

12=1 x 2…………….

22=2 x 2…………….

B

Wavelength

Single Window:830nm,850nm,980nm,1310nm,1480nm,1550nm,1585nm

Dual Windows:850nm/1310nm, 1310nm/1490nm, 1310nm/1550nm, 1310nm/1490nm,

Three Windows:1310nm+1490nm+1550nm

Wide wavelength: 1260nm to 1620nm

C

Coupling Ration(01~50)

1/99 ~ 50/50

D

Pigtail Type

1=250um Bare Fiber

2=900um Loose Tube

3=2mm Cable

4=3mm Cable

E

Encapsulation Size(mm)

Package D

Package E

Package F

Package G

F

Pigtail Length(for each port)

1=1m

2=1.5m

3=Customer Length

GH

Connector(Input/output)

FP=FC/PC

FA=FC/APC

SP=SC/PC

SA=SC/APC

ST=ST/PC

LP=LC/PC

LA==LC/APC

00=None

CS=Customer Specified

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