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. |
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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.
Single Mode Single-window 1x3 & 1x4 Narrow Band Tube Coupler |
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Monolithic Single-mode 1x3 and 1x4 Coupler ; Triple Windows (1310/1490/1550) |
Multi-Mode Coupler
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| 1x2, 2x2, Multi mode, Standard Coupler |
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| Parameters |
A Grade |
B Grade |
| Operating Wavelength(nm) |
850 & 1310 |
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| Excess loss (dB) |
0.7 |
1.0 |
| Uniformity (dB) |
≤ 0.8 |
≤1.0 |
| Coupling Ration (%) |
1 : 99 to 50 : 50 |
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| Directivity (dB) |
>35 |
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| Operation temp.(°C) |
-40 to +70 |
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| Storage temp.(°C) |
-50 to +85 |
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| Temp. Coefficient (dB/°C) |
<0.002( Max.) |
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Dimensions (mm) |
Bare
fiber: 3.0 (Ф) x 54 ( L ) |
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| Coupling Ratio / Insertion Loss Reference Table |
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| 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 |
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** 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. |
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Multi-Mode Star & Tree Coupler
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| Multi mode, Star and tree Coupler |
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| Parameter |
1x4 |
4x4 |
1x8 |
8x8 |
1x16 |
16x16 |
1x32 |
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| Operating Wavelength(nm) |
850 &1310 |
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| Coupling ratio (%) |
Average |
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| Max. Insertion loss (dB) |
7.7 |
8.4 |
11.5 |
12.5 |
15.5 |
17.0 |
18.0 |
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| Uniformity (dB) |
≤1.2 |
≤1.5 |
≤1.8 |
≤2.0 |
≤2.4 |
≤2.6 |
≤3.0 |
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| Directivity (dB) |
>35 |
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| Operation temp.(°C) |
-40 to +70 |
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| Storage temp.(°C) |
-50 to +85 |
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| Temp. Coefficient (dB/°C) |
<0.003 |
<0.004 |
<0.006 |
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| Dimension (mm) |
ABS box |
100(L)x80(W)x10(H) |
140(L)x90(W)x10.7(H) |
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| Metal box |
LGX Module |
LGX Module or |
LGX Moduler |
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| ** 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. |
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Single Mode Dual-window Coupler
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| 1x2, 2x2, Single mode, Dual window Wideband+/-40nm |
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| Parameters |
A Grade |
B Grade |
| Operating Wavelength(nm) |
1310 & 1550 (+/-40) |
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| Excess loss (dB) |
0.2 |
0.3 |
| Uniformity (dB) |
≤ 0.8 |
≤ 1.2 |
| Coupling Ration (%) |
1 : 99 to 50 : 50 |
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| Polarization Stability (dB) |
0.15 |
0.2 |
| Directivity (dB) |
>55 |
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| Operation temp.(°C) |
-40 to +70 |
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| Storage temp.(°C) |
-50 to +85 |
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| Temp. Coefficient (dB/°C) |
<0.002( Max.) |
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| Dimensions (mm) |
Bare
fiber: 3.0 (Ф) x 54 ( L ) |
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| Coupling Ratio / Insertion Loss Reference Table |
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| 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 |
11.3/0.6 |
12.7/0.8 |
| 5 : 95 |
15.2/0.4 |
18.9/0.5 |
| 1 : 99 |
23.5/0.3 |
24.0/0.4 |
| ** 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. |
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Single Mode Dual-window Star & Tree Coupler
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| Single mode, Star and tree Wideband+/-40nm |
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| Parameter |
1x4 |
4x4 |
1x8 |
8x8 |
1x16 |
16x16 |
1x32 |
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| Operating Wavelength(nm) |
1310 &1550 (+/-40) |
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| Coupling ratio (%) |
Average |
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| Max. Insertion loss (dB) |
7.2 |
7.4 |
10.7 |
10.9 |
14.5 |
14.7 |
17.5 |
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| Uniformity (dB) |
≤1.0 |
≤1.2 |
≤1.6 |
≤1.8 |
≤2.4 |
≤2.6 |
≤2.8 |
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| Directivity (dB) |
>55 |
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| Operation temp.(°C) |
-40 to +70 |
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| Storage temp.(°C) |
-50 to +85 |
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| Temp. Coefficient (dB/°C) |
<0.003 |
<0.004 |
<0.006 |
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| Dimension (mm) |
ABS box |
100(L)x80(W)x10(H) |
140(L)x90(W)x10.7(H) |
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| Metal box |
LGX
Module |
LGX
Module |
LGX
Module |
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| ** 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. |
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Single Mode Dual-window Miniature Coupler
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| 1x2, 2x2, Miniature Size Wideband+/-40nm |
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| Parameters |
P Grade |
A Grade |
| Operating Wavelength(nm) |
1310 &1550(+/-40) |
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| Uniformity (dB) |
≤ 0.6 |
≤ 0.8 |
| Coupling Ration (%) |
1 : 99 to 50 : 50 |
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| Polarization Stability (dB) |
0.15 |
0.15 |
| Directivity (dB) |
>55 |
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| Operation temp.(°C) |
-40 to +70 |
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| Storage temp.(°C) |
-40 to +85 |
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| Temp. Coefficient (dB/°C) |
<0.002( Max.) |
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| Dimensions (mm) |
Bare
fiber: 3.0 (Ф) x 35 ( L ) |
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| Coupling Ratio / Insertion Loss Reference Table |
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| Desired Splitting Ratio |
P Grade |
A Grade |
| 50 : 50 |
3.4 |
3.6 |
| 40 : 60 |
4.4 / 2.5 |
4.7 / 2.7 |
| 30 : 70 |
5.6 / 1.8 |
6.0 / 1.9 |
| 20 : 80 |
7.5 / 1.2 |
7.9 / 1.2 |
| 10 : 90 |
10.8 / 0.6 |
11.3 / 0.6 |
| 5 : 95 |
14.6 / 0.4 |
15.2 / 0.4 |
| 1 : 99 |
21.5 / 0.2 |
23.5 / 0.3 |
| ** 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. |
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Single Mode Dual-window Low WDL Coupler
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| 1x2, 2x2, Low WDL Coupler, Wideband+/-40nm |
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| Parameters |
P Grade |
A Grade |
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| Operating Wavelength(nm) |
1310 or 1550 (+/-40) |
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| Coupling Ration (%) |
1 : 99 to 50 : 50 |
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| Polarization Stability (dB) |
0.12 |
0.15 |
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| Directivity (dB) |
>55 |
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| Operation temp.(°C) |
-40 to +70 |
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| Storage temp.(°C) |
-40 to +85 |
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| Temp. Coefficient (dB/°C) |
<0.002( Max.) |
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| Dimensions (mm) |
Bare
fiber: 3.0 (Ф) x 54 ( L ) |
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| Coupling Ratio / Insertion Loss Reference Table |
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| Desired Splitting Ratio |
P Grade |
A Grade |
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| I.L |
WDL |
I.L |
WDL |
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| 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 |
| ** 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. |
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Single Mode Single-window Coupler
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| 1x2, 2x2, Single mode, Single window Wideband+/-40nm |
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| Parameters |
A Grade |
B Grade |
| Operating Wavelength(nm) |
1310 or1550 (+/-40) |
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| Excess loss (dB) |
0.2 |
0.2 |
| Uniformity (dB) |
≤ 0.6 |
≤ 1.0 |
| Coupling Ration (%) |
1 : 99 to 50 : 50 |
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| Polarization Stability (dB) |
0.10 |
0.15 |
| Directivity (dB) |
>55 |
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| Operation temp.(°C) |
-40 to +70 |
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| Storage temp.(°C) |
-50 to +85 |
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| Temp. Coefficient (dB/°C) |
<0.002( Max.) |
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| Dimensions (mm) |
Bare
fiber: 3.0 (Ф) x 54 ( L ) |
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| Coupling Ratio / Insertion Loss Reference Table |
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| 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 |
| ** 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. |
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Single Mode Single-window Narrow Band Coupler
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| 1x2, 2x2, Single mode, Single window Narrowband+/-10nm |
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| Parameters |
A Grade |
B Grade |
| Operating Wavelength(nm) |
980, 1310, 1480 or 1550 |
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| Excess loss (dB) |
0.1 |
0.1 |
| Uniformity (dB) |
≤ 0.6 |
≤ 0.9 |
| Coupling Ration (%) |
1 : 99 to 50 : 50 |
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| Polarization Stability (dB) |
0.10 |
0.15 |
| Directivity (dB) |
> 55 |
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| Operation temp.(°C) |
-40 to +70 |
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| Storage temp.(°C) |
-50 to +85 |
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| Temp. Coefficient (dB/°C) |
< 0.002( Max.) |
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| Dimensions (mm) |
Bare
fiber : 3.0 (Ф) x 54 ( L ) |
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| Coupling Ratio / Insertion Loss Reference Table |
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| 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 |
| ** 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. |
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Single Mode Single-window Star & Tree Coupler
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| Single mode, Single-Window, Star and tree, Wideband+/-40nm |
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| Parameter |
1x4 |
4x4 |
1x8 |
8x8 |
1x16 |
16x16 |
1x32 |
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| Operating Wavelength(nm) |
1310 or1550 (+/-40) |
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| Coupling ratio (%) |
Average |
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| Max. Insertion loss (dB) |
7.0 |
7.2 |
10.5 |
10.7 |
14.3 |
14.5 |
17.3 |
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| Uniformity (dB) |
≤0.8 |
≤1.0 |
≤1.2 |
≤1.4 |
≤2.4 |
≤2.6 |
≤2.6 |
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| Directivity (dB) |
>55 |
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| Operation temp.(°C) |
-40 to +70 |
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| Storage temp.(°C) |
-40 to +85 |
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| Temp. Coefficient (dB/°C) |
< 0.003 |
< 0.004 |
< 0.006 |
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| Dimensions(mm) |
ABS box |
100(L)x80(W)x10(H) |
140(L)x90(W)x10.7(H) |
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| Metal box |
LGX
Module |
LGX
Module |
LGX
Module |
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| ** 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. |
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Single Mode Single-window Ultra Low PDL Coupler
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| 1x2, 2x2, Low PDL Coupler, Wideband+/-40nm |
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| Parameters |
P Grade |
A Grade |
| Operating Wavelength(nm) |
1310 or 1550 ±40) |
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| Uniformity (dB) |
≤ 0.5 |
≤ 0.6 |
| Coupling Ration (%) |
1 : 99 to 50 : 50 |
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| Polarization Stability (dB) |
≤ 0.05 |
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| Directivity (dB) |
> 55 |
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| Operation temp.(°C) |
-40 to +70 |
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| Storage temp.(°C) |
-40 to +85 |
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| Temp. Coefficient (dB/°C) |
< 0.002( Max.) |
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| Dimensions (mm) |
Bare
fiber : 3.0 (Ф) x 54 ( L ) |
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| Coupling Ratio / Insertion Loss Reference Table |
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| 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 |
| ** 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. |
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Single Mode Single-window 1x3 & 1x4 Tube Coupler
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| 1x3, 1x4, Single mode, Single window Wideband+/-40nm |
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| Parameter |
1x3 Premium |
1x3 A Grade |
1x4 Premium |
1x4 A Grade |
| Operating Wavelength(nm) |
1310 or 1550 (+/-40) |
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| Coupling Ratio (%) |
Average |
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| Max. Insertion loss (dB) |
≤ 5.4 |
≤ 5.8 |
≤ 7.0 |
≤ 7.4 |
| Uniformity (dB) |
≤ 0.8 |
≤ 1.2 |
≤ 1.0 |
≤ 1.4 |
| 1x3, 1x4, Single mode, Dual-window Wideband+/-40nm |
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| Parameter |
1x3 Premium |
1x3 A Grade |
1x4 Premium |
1x4 A Grade |
| Operating Wavelength(nm) |
1310 and 1550 (+/-40) |
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| Coupling Ratio (%) |
Average |
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| Insertion loss (dB) |
≤ 5.6 |
≤ 6.0 |
≤ 7.2 |
≤ 7.6 |
| Uniformity (dB) |
≤ 1.0 |
≤ 1.4 |
≤ 1.2 |
≤ 1.6 |
| Directivity (dB) |
>50 |
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| Operating Temp.(°C) |
-40 to +70 |
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| Storage Temp.(°C) |
-40 to +85 |
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| Temp. Coefficient(dB/°C) |
<0.003 |
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| Dimensions (mm) |
3.5(Ф) x 80(L) |
4.5(Ф) x 90(L) |
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| ** The specifications listed above do not include the effect of connector loss. ** Specification values for devices with unbalanced split ratios are available upon request. |
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Single Mode Single-window 1x3 & 1x4 Narrow Band Tube Coupler
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| 1x3, 1x4, Single mode, Single window Narrowand+/-15nm |
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| Parameter |
1x3 Premium |
1x3 A Grade |
1x4 Premium |
1x4 A Grade |
| Operating Wavelength(nm) |
1310 or 1550 (+/-15) |
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| Coupling Ratio (%) |
Average |
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| 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 |
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| Operating Temp.(°C) |
-40 to +70 |
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| Storage Temp.(°C) |
-40 to +85 |
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| Fiber Type |
250um bare fiber |
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| Dimensions (mm) |
3.0(Ф)x 54(L) |
3.0(Ф) x 54(L) |
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| ** The specifications listed above do not include the effect of connector loss. |
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Monolithic Single-mode 1x3 and 1x4 Coupler; Triple Windows (1310/1490/1550)
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| 1x3, 1x4, Single mode, Triple window |
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| Parameter |
1x3 Premium |
1x3 A Grade |
1x4 Premium |
1x4 A Grade |
| Operating Wavelength(nm) |
1310,1490 and 1550 |
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| Coupling Ratio (%) |
Average |
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| 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 |
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| Operating Temp.(°C) |
-40 to +70 |
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| Storage Temp.(°C) |
-40 to +85 |
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| Fiber Type |
250um bare fiber |
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| Dimensions (mm) |
3.0(Ф)x 54(L) |
3.0(Ф) x 54(L) |
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| ** The specifications listed above do not include the effect of connector loss. |
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