Description
Single mode Dual Window Coupler 1×2, 2×2 offer very low insertion loss, low polarization dependence and excellent environmental stability. Accurate coupling ratio from 50/50 to 1/99, fiber type 250um bare fiber, 3mm and 900 um loose tube fiber are available with very tight uniformity in a wide wavelength range of both 1310 nm and 1550 nm windows. Singlemode dual window coupler find extensive application to perform power splitting and monitoring functions in all kinds of optical communication systems.
Features
- Low Excess Loss
- Various Coupling Ratio
- Compact Size
Applications
- Long-haul
- Telecommunications
- CATV Systems & Fiberoptic
- Sensors
- Local Area Network
Performance Specifications
| Single mode Dual Window Wideband Coupler | ||
| Grade | P | A |
| Coupling Ratio (%) | 50/50 | 50/50 |
| Excess Loss (Typical) (dB) | 0.07 | 0.1 |
| Maximum lnsertion loss (dB) | 3.6 | 3.8 |
| Uniformity (Max.) (dB) | 0.7 | 1.0 |
| Polarization Sensitivity (dB) | 0.10 | 0.15 |
| Operating Wavelength (nm） | 1310 / 1550 ± 40, 1310*1585 ± 40, or custom wavelength | |
Coupling Ratio/insertion Loss Conversion Chart
| Coupling Ratio | lnsertion Loss | |
| Premium | A Grade | |
| 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 | 11.3/0.5 | 12.0/0.8 |
| 5/95 | 14.0/0.35 | 14.6/0.43 |
| 1/99 | 22.5/0.25 | 23.0/0.35 |
| Coupling Ratio(%) | 1~50 | |
| Directivity (dB) | >55 | |
| Operating Temperature (℃) | -20 – + 85 | |
| Storage Temperature (℃) | -40 – + 85 | |
| Fiber Type | Corning Single mode SMF-28, DS Fiber, or flex core | |
| Fiber Pigtail Length (m) | 1 | |
| Port Configuration | 1×2 or 2×2 | |
| Package Dimension | Package D,E,F,G | |
Package Dimensions & Pigtail Style
| Package Dimensions: | |
| Package D: | 3mm x 40mm 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 |
