What is an optical Coupler ?

An optical coupler is a passive optical component that able to combine or split transmission data (optical power) from optical fibers.

Plank is a leading fused coupler company in the industry and ability to supply the high reliability coupler on the market. Plank coupler products come with compact size, Low Insertion Loss, Bi-directional and Environmentally Independent features.

Plank also Provides WDM System Integration service for our worldwide customers, the integration module could be ABS box, LGX box, Rackmount Chassis or any other custom defined housing.

For further information, please get the specification sheets at download zone.

Multi-Mode Coupler

Multi-Mode Star & Tree Coupler



Single Mode Dual-window Coupler

Single Mode Dual-window Star & Tree Coupler


Single Mode Dual-window Low WDL Coupler



Single Mode Narrow Band Coupler

Single Mode Single-window Star & Tree Coupler


Single Mode Single-window Coupler

Single Mode Single-window Ultra Low PDL Coupler




Single Mode 1x3 & 1x4 Narrow Band Coupler

PLC Splitter (Coupler) 1x8 1x16 1x32

Monolithic Single-mode  1x3 and 1x4 Coupler ; Triple Windows (1310/1490/1550)


Multi-Mode Coupler


1x2, 2x2, Multi mode, Standard Coupler

Parameters

A Grade

B Grade

Operating Wavelength(nm)

850 & 1310

Excess loss (dB)

0.7

1.0

Uniformity (dB)

0.8

1.0

Coupling Ration (%)

1 : 99 to 50 : 50

Directivity (dB)

>35

Operation temp.(C)

-40 to +70 *

Storage temp.(C)

-50 to +85

Temp. Coefficient (dB/C)

<0.002( Max.)

Dimensions (mm)

   Bare    fiber: 3.0 (Ф) x 54 ( L )
   Loose tube: 3.5(Ф) x 65 ( L )
   PVC: 95(L) x 12(W) x 10(H)

Coupling Ratio / Insertion Loss Reference Table

Desired Splitting Ratio

A Grade

B 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

8.0/1.6

8.7/2.1

10 : 90

11.3/1.1

12.2/1.6

5 : 95

14.9/0.9

16.2/1.3

1 : 99

22.1/0.7

22.7/1.0

* Bare fiber: -40 to +70, other package: 0 to +70
** The specifications listed above do not include the effect of connector loss.
** Connector Type: SC,FC,ST,SC/APC,FC/APC,LC,MU are available.
** Specification values for devices with unbalanced split ratios are available upon request.


Multi-Mode Star & Tree Coupler


Multi mode, Star and tree Coupler

Parameter

1x4

4x4

1x8

8x8

1x16

16x16

1x32

Operating Wavelength(nm)

850 &1310

Coupling ratio (%)

Average

Max. Insertion loss (dB)

7.7

8.4

11.5

12.5

15.5

17.0

18.0

Uniformity (dB)

1.2

1.4

1.8

2.0

2.4

2.6

2.6

Directivity (dB)

>35

Operation temp.(C)

-40 to +70 *

Storage temp.(C)

-50 to +85

Temp. Coefficient (dB/C)

<0.003

<0.004

<0.006

Dimension (mm)

ABS box

100(L)x80(W)x10(H)

140(L)x90(W)x10(H)

 

Metal box

LGX Module
19" 1U Chassis

LGX Module
19" 1U Chassis

LGX Moduler
19" 1U Chassis
19" 2U Chassis

* Bare fiber: -40 to +70, other package: 0 to +70
** The specifications listed above do not include the effect of connector loss.
** Connector Type: SC, FC, ST, LC,MU are available.
** Specification values for devices with unbalanced split ratios are available upon request.


Single Mode Dual-window Coupler


1x2, 2x2, Single mode, Dual window Wideband+/-40nm

Parameters

A Grade

B Grade

Operating Wavelength(nm)

1310 & 1550 (+/-40)

Excess loss (dB)

0.2

0.3

Uniformity (dB)

0.8

1.2

Coupling Ration (%)

1 : 99 to 50 : 50

Polarization Stability (dB)

0.15

0.2

Directivity (dB)

>55

Operation temp.(C)

-40 to +70 *

Storage temp.(C)

-50 to +85

Temp. Coefficient (dB/C)

<0.002( Max.)

Dimensions (mm)

  Bare fiber: 3.0 (Ф) x 54 ( L )
  Loose tube: 3.5(Ф) x 65 ( L )
  PVC: 95(L) x 12(W) x 10(H)

Coupling Ratio / Insertion Loss Reference Table

Desired Splitting Ratio

A Grade

B Grade

50 : 50

3.6

3.9

40 : 60

4.7/2.7

5.0/2.9

30 : 70

6.0/1.9

6.4/2.1

20 : 80

7.9/1.2

8.5/1.4

10 : 90

11.3/0.65

12.7/0.8

5 : 95

15.2/0.4

18.9/0.5

1 : 99

23.5/0.3

24.0/0.4

* Bare fiber: -40 to +70, other package: 0 to +70
** The specifications listed above do not include the effect of connector loss.
** Connector Type: SC,FC,ST,SC/APC,FC/APC,LC,MU are available.
** Specification values for devices with unbalanced split ratios are available upon request.


Single Mode Dual-window Star & Tree Coupler


Single mode, Star and tree Wideband+/-40nm

Parameter

1x4

4x4

1x8

8x8

1x16

16x16

1x32

Operating Wavelength(nm)

1310 &1550 (+/-40)

Coupling ratio (%)

Average

Max. Insertion loss (dB)

7.2

7.4

10.7

10.9

14.5

14.7

17.5

Uniformity (dB)

1.0

1.2

1.6

1.8

2.4

2.6

2.8

Directivity (dB)

>55

Operation temp.(C)

-40 to +70 *

Storage temp.(C)

-50 to +85

Temp. Coefficient (dB/C)

<0.003

<0.004

<0.006

Dimension (mm)

ABS box

100(L)x80(W)x10(H)

140(L)x90(W)x10(H)

 

Metal box

LGX Module
19" 1U Chassis

LGX Module
19" 1U Chassis

LGX Module
19" 1U Chassis
19" 2U Chassis

* Bare fiber: -40 to +70, other package: 0 to +70
** The specifications listed above do not include the effect of connector loss.
** Connector Type: SC,FC,ST,SC/APC,FC/APC,LC,MU are available.
** Specification values for devices with unbalanced split ratios are available upon request.


Single Mode Dual-window Low WDL Coupler


1x2, 2x2, Low WDL Coupler, Wideband+/-40nm

Parameters

P Grade

A Grade

Operating Wavelength(nm)

1310 or 1550 (+/-40)

Coupling Ration (%)

1 : 99 to 50 : 50

Polarization Stability (dB)

0.12

0.15

Directivity (dB)

>55

Operation temp.(C)

-40 to +70 *

Storage temp.(C)

-40 to +85

Temp. Coefficient (dB/C)

<0.002( Max.)

Dimensions (mm)

  Bare fiber: 3.0 (Ф) x 54 ( L )
  Loose tube: 3.5(Ф) x 65 ( L )
  PVC: 95(L) x 12(W) x 10(H)

Coupling Ratio / Insertion Loss Reference Table

Desired Splitting Ratio

P Grade

A Grade

 

I.L

WDL

I.L

WDL

50:50

3.4

0.2

3.6

0.3

40 : 60

4.4 / 2.5

0.2

4.7 / 2.7

0.3

30 : 70

5.6 / 1.8

0.25

6.0 / 1.9

0.3

20:80

7.5 / 1.1

0.25

7.9 / 1.2

0.35

10:90

11.0 / 0.6

0.3

11.3 / 0.6

0.35

5:95

14.6 / 0.4

0.35

15.2 / 0.4

0.4

1:99

21.5 / 0.2

0.4

23.5 / 0.3

0.5

* Bare fiber: -40 to +70, other package: 0 to +70
** The specifications listed above do not include the effect of connector loss.
** Connector Type: SC,FC,ST,SC/APC,FC/APC,LC,MU are available.
** Specification values for devices with unbalanced split ratios are available upon request.


Single Mode Single-window Coupler


1x2, 2x2, Single mode, Single window Wideband+/-40nm

Parameters

A Grade

B Grade

Operating Wavelength(nm)

1310 or1550 (+/-40)

Excess loss (dB)

0.2

0.2

Uniformity (dB)

0.6

1.0

Coupling Ration (%)

1 : 99 to 50 : 50

Polarization Stability (dB)

0.10

0.15

Directivity (dB)

>55

Operation temp.(C)

-40 to +70 *

Storage temp.(C)

-50 to +85

Temp. Coefficient (dB/C)

<0.002( Max.)

Dimensions (mm)

  Bare fiber: 3.0 (Ф) x 54 ( L )
  Loose tube: 3.5(Ф) x 65 ( L )
  PVC: 95(L) x 12(W) x 10(H)

Coupling Ratio / Insertion Loss Reference Table

Desired Splitting Ratio

A Grade

B Grade

50 : 50

3.4

3.7

40 : 60

4.4 / 2.5

4.8 / 2.8

30 : 70

5.6 / 1.8

6.1 / 2.0

20 : 80

7.5 / 1.2

8.0 / 1.3

10 : 90

10.8 / 0.6

11.8 / 0.8

5 : 95

14.6 / 0.4

18.5 / 0.5

1 : 99

21.5 / 0.2

22.0 / 0.3

* Bare fiber: -40 to +70, other package: 0 to +70
** The specifications listed above do not include the effect of connector loss.
** Connector Type: SC,FC,ST,SC/APC,FC/APC,LC,MU are available.
** Specification values for devices with unbalanced split ratios are available upon request.


Single Mode Single-window Narrow Band Coupler


1x2, 2x2, Single mode, Single window Narrowband+/-10nm

Parameters

A Grade

B Grade

Operating Wavelength(nm)

980, 1310, 1480 or 1550

Excess loss (dB)

0.1

0.1

Uniformity (dB)

0.6

0.9

Coupling Ration (%)

1 : 99 to 50 : 50

Polarization Stability (dB)

0.10

0.15

Directivity (dB)

> 55

Operation temp.(C)

-40 to +70 *

Storage temp.(C)

-50 to +85

Temp. Coefficient (dB/C)

< 0.002( Max.)

Dimensions (mm)

  Bare fiber : 3.0 (Ф) x 54 ( L )
  Loose tube : 3.5(Ф) x 65 ( L )
  PVC : 95(L) x 12(W) x 10(H)

Coupling Ratio / Insertion Loss Reference Table

Desired Splitting Ratio

A Grade

B Grade

50 : 50

3.4

3.6

40 : 60

4.4 / 2.5

4.8 / 2.8

30 : 70

5.6 / 1.8

6.1 / 2.0

20 : 80

7.5 / 1.2

8.0 / 1.3

10 : 90

10.8 / 0.6

12.0 / 0.8

5 : 95

14.6 / 0.4

15.5 / 0.6

1 : 99

21.5 / 0.2

22.0 / 0.3

* Bare fiber: -40 to +70, other package: 0 to +70
** The specifications listed above do not include the effect of connector loss.
** Connector Type: SC,FC,ST,SC/APC,FC/APC,LC,MU are available.
** Specification values for devices with unbalanced split ratios are available upon request.


Single Mode Single-window Star & Tree Coupler


Single mode, Single-Window, Star and tree, Wideband+/-40nm

Parameter

1x4

4x4

1x8

8x8

1x16

16x16

1x32

Operating Wavelength(nm)

1310 or1550 (+/-40)

Coupling ratio (%)

Average

Max. Insertion loss (dB)

7.0

7.2

10.5

10.7

14.3

14.5

17.3

Uniformity (dB)

0.8

1.0

1.2

1.4

2.4

2.6

2.6

Directivity (dB)

>55

Operation temp.(C)

-40 to +70 *

Storage temp.(C)

-40 to +85

Temp. Coefficient (dB/C)

< 0.003

< 0.004

< 0.006

Dimensions(mm)

ABS box

100(L)x80(W)x10(H)

140(L)x90(W)x10(H)

 

Metal box

LGX Module
19" 1U Box

LGX Module
19" 1U Box

LGX Module
19" 1U Box
19" 2U Box

* Bare fiber: -40 to +70, other package: 0 to +70
** The specifications listed above do not include the effect of connector loss.
** Connector Type: SC,FC,ST,SC/APC,FC/APC,LC,MU are available.
** Specification values for devices with unbalanced split ratios are available upon request.


Single Mode Single-window Ultra Low PDL Coupler


1x2, 2x2, Low PDL Coupler, Wideband+/-40nm

Parameters

P Grade

A Grade

Operating Wavelength(nm)

1310 or 1550 40)

Uniformity (dB)

0.5

0.6

Coupling Ration (%)

1 : 99 to 50 : 50

Polarization Stability (dB)

0.05

Directivity (dB)

> 55

Operation temp.(C)

-40 to +70 *

Storage temp.(C)

-40 to +85

Temp. Coefficient (dB/C)

< 0.002( Max.)

Dimensions (mm)

  Bare fiber : 3.0 (Ф) x 54 ( L )
  Loose tube : 3.5(Ф) x 65 ( L )
  PVC : 95(L) x 12(W) x 10(H)

Coupling Ratio / Insertion Loss Reference Table

Desired Splitting Ratio

P Grade

A Grade

50 : 50

3.3

3.4

40 : 60

4.3/2.5

4.4/2.5

30 : 70

5.5/1.7

5.6/1.8

20 : 80

7.4/1.1

7.5/1.2

10 : 90

10.7/0.6

11.0/0.6

5 : 95

14.0/0.4

14.6/0.4

1 : 99

21.0/0.2

21.5/0.2

* Bare fiber: -40 to +70, other package: 0 to +70
** The specifications listed above do not include the effect of connector loss.
** Connector Type: SC,FC,ST,SC/APC,FC/APC,LC,MU are available.
** Specification values for devices with unbalanced split ratios are available upon request.


Single Mode Single-window 1x3 & 1x4 Narrow Band Coupler


1x3, 1x4, Single mode, Single window Narrowand+/-15nm

Parameter

1x3 Premium

1x3 A Grade

1x4 Premium

1x4 A Grade

Operating Wavelength(nm)

1310 or 1550 (+/-15)

Coupling Ratio (%)

Average

Max. Insertion loss (dB)

5.3

5.5

6.8

7.2

Uniformity (dB)

0.6

0.8

0.8

1.2

Directivity (dB)

>55

Operating Temp.(C)

-40 to +70 *

Storage Temp.(C)

-40 to +85

Fiber Type

250um bare fiber

Dimensions (mm)

3.0(Ф)x 54(L)

3.0(Ф) x 54(L)

** The specifications listed above do not include the effect of connector loss.


Monolithic Single-mode 1x3 and 1x4 Coupler; Triple Windows (1310/1490/1550)


1x3, 1x4, Single mode, Triple window 

Parameter

1x3 Premium

1x3 A Grade

1x4 Premium

1x4 A Grade

Operating Wavelength(nm)

1310,1490 and 1550

Coupling Ratio (%)

Average

Max. Insertion loss (dB)

5.4

5.7

7.0

7.4

Uniformity (dB)

0.8

1.2

1.0

1.4

Directivity (dB)

>55

Operating Temp.(C)

-40 to +70 *

Storage Temp.(C)

-40 to +85

Fiber Type

250um bare fiber

Dimensions (mm)

3.0(Ф)x 54(L)

3.0(Ф) x 54(L)

** The specifications listed above do not include the effect of connector loss.


PLC Optical Coupler
     1 x 8 Ports ; 1 x 16 Ports ; 1 x 32 Ports

TYPE 1 x 8 116 132
Operating wavelengthnm ) 1260-1650
Insertion Loss (dB) 1,2 Typical 10.5 13.5 16.5
Maximum 11.0 14.0 17.5
Loss Uniformity (dB) 1,2 Maximum 0.8 1.2 1.7
Polarization Dependent Loss (dB) 1,2 Maximum 0.3
Wavelength Dependent Loss (dB) Maximum 1.0
Directivity (dB) 1,3 Minimum ≥55
Return loss (dB) 1,3 Minimum ≥50
Operating Temperature () -40 to 85
Storage Temperature () -40 to 85
Optical Fiber Type Corning SMF-28 or SMF-28e
Optical Fiber Length (M) 1.2
Dimension (mm)
[Built-in Fanout module with 900um Loose Tube]
4 x 12 x 60 6 x 20 x 80
1. All measurements are made at room temperature.
2. The connector loss is excluded in the listed specifications.
3. The listed specifications are based on bare fiber measurement, connector loss is not included in the listed standard specifications.