Multimode Coupler
Features
- Low insertion loss
- Low excess loss
- Low PDL
- High directivity
- Environmentally stable and reliable
Applications
- IMT 2000
- CATV
- Wide Area Network
- Local Area Network
- Telecommunication system
- FTTH
- Test instrument
Specification(50:50 coupling ratio, 50/125㎛ fiber)
| Parameter | Unit | Grade | |
| Premium | Standard | ||
| Operating Wavelength | nm | 800 to 1600 | |
| Wavelength Bandwidth | nm | ±10 | |
| Max. Insertion Loss | dB | 3.9 | 4.5 |
| Typical Excess Loss | dB | 0.1 | 0.3 |
| Max. Uniformity | dB | 0.6 | 1.0 |
| Max. Polarization Dependent Loss | dB | 0.10 | 0.15 |
| Min. Directivity | dB | 40 | |
| Min. Return Loss | dB | 50 | |
| Temperature Coefficient | dB/℃ | 0.002 | |
| Operating Temperature | ℃ | -40 to +85 | |
| Storage Temperature | ℃ | -50 to +85 | |
without connectors
Coupling Ratio(%) / Insertion Loss(dB) Conversion Chart
| Coupling Ratio(%) | Unit | Grade | |
| Premium | Standard | ||
| 40 / 60 | dB | 4.9 / 3.0 | 5.4 / 3.8 |
| 30 / 70 | dB | 6.2 / 2.3 | 6.7 / 2.7 |
| 20 / 80 | dB | 8.0 / 1.6 | 8.7 / 2.1 |
| 10 / 90 | dB | 11.3 / 1.1 | 12.2 / 1.6 |
| 5 / 95 | dB | 14.6 / 0.9 | 16.2 / 1.3 |
| 1 / 99 | dB | 22.1 / 0.7 | 22.7 / 1.0 |