The function and the performance of the mini size WDM couplers are the same as the regular WDM couplers. These mini size WDM couplers are widely used in EDFA modules and communication systems.
Mini size High isolation
Low PDL Low excess loss
High stability and reliability
EDFA modules WDM systems
Testing instruments
| Type | 980/1550 WDM | 980/1590 WDM | 1310/1550 WDM | |||
|---|---|---|---|---|---|---|
| Operating wavelength (nm) | 980 and 1550 | 980 and 1590 | 1310 and 1550 | |||
| Operating bandwidth (nm) | ±10/20 | ±10/20 | ±15 | |||
| Package dimensions (Ф×L) (mm) | Ф2.4/3.0×30, Ф2.4×25 | Ф2.4×30 | ||||
| Grade | P | A | P | A | P | A |
| Insertion loss (dB) | ≤0.25 | ≤0.35 | ≤0.25 | ≤0.35 | ≤0.25 | ≤0.35 |
| Isolation (dB) | ≥20 | ≥18 | ≥20 | ≥18 | ≥17 | ≥16 |
| PDL (dB) | ≤0.08 | ≤0.12 | ≤0.08 | ≤0.12 | ≤0.08 | ≤0.12 |
| Fiber lead length | 0.8 meter, others on request | 1 meter, others on request | ||||
| Directivity (dB) | ≥55 | |||||
| Operating temperature (℃) | -40 ~ +85 | |||||
| Configuration | 1×2 or 2×2 | |||||
