Dual Window Wideband Couplers are high quality components designed to divide or combine optical signal in optical fiber system.
These devices are fabricated by using the fused bi-conical taper (FBT) process are reliable over wide range of temperature.
The operating wavelength is 1310nm and 1550nm and the passband is 80nm.
The coupling ratio can range from 1:99 to 50:50.
Various packaging and pigtailing configurations can satisfy our customer's requirements.

| Parameter | Unit | Premium | A | B | ||
| Operating | nm | 1310±40 and 1550±40 | ||||
| Excess loss | Typ. | dB | 0.15 | |||
| Polarization Stability | Max | dB | 0.15 | 0.15 | 0.2 | |
| Uniformity(50:50) | Max | dB | 0.4 | 0.5 | 0.6 | |
| Thermal Stability | Max | dB | 0.2 | 0.3 | 0.4 | |
| Directivity | Min | dB | 50(1x2),60(2x2) | |||
| Reflectance | Min | dB | 50(1x2),60(2x2) | |||
| Operating Temperature | °C | -30~85 | ||||
| Operating Temperature | °C | -40~85 | ||||
| 50/50 | Max | dB | 3.4/3.4 | 3.6/3.6 | 3.7/3.7 | |
| 40/60 | Max | dB | 4.5/2.6 | 4.6/2.7 | 4.7/2.8 | |
| 30/70 | Max | dB | 5.8/1.85 | 5.9/1.9 | 6.0/2.0 | |
| 20/80 | Max | dB | 7.6/1.2 | 7.7/1.3 | 7.9/1.4 | |
| 10/90 | Max | dB | 10.8/0.65 | 11.0/0.7 | 11.1/0.8 | |
| 1/99 | Max | dB | 21.8/0.2 | 22.1/0.25 | 22.5/0.3 | |
| Parameter | Specification | ||||||||
| Operating Wavelength | nm | Single Window1 Dual,Three Window2 | |||||||
| (1*N) | N=3 | N=4 | N=5 | N=8 | N=16 | N=24 | N=32 | N=64 | |
| Fiber Type | Corning SMF-28e | ||||||||
| IL(MAX) | dB | 5.41/5.62 | 7.01/7.22 | 7.81/8.02 | 10.01/10.42 | 13.51/13.92 | 15.01/15.42 | 17.31/17.52 | 21.01/21.52 |
| Uniformity | dB | 0.51/0.62 | 0.51/0.62 | 0.61/0.82 | 0.81/1.02 | 1.11/1.32 | 1.21/1.52 | 1.31/1.52 | 2.11/2.52 |
| Return Loss | dB | ≥55 | |||||||
| Directivity | dB | ≥55 | |||||||
| PDL | dB | <0.20 | <0.20 | <0.30 | <0.30 | <0.40 | <0.50 | <0.50 | <0.50 |
If you want to display your own brand LOGO on the goods such as cable, package bag, label or any where. It is no any problem. Our OEM and ODM service is always ready to do it.
According to Stardard Export Packing.