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After 6 months, technical team has developed this ultra-compact module, which is very small in size, only 20x8x6.5mm. For six months, the technical team continued to modify the drawings, packaging structure, and packaging materials, and finally made the same CWDM able to withstand the test of extreme environments with the smallest size. The ultra-compact CWDM module is available with 4, 8, 16, and 18 channels, and has the advantages of high isolation, low loss, and high stability.
| Parameter | Unit | Specifications | |
| Operating wavelength | nm | 1260~1620 | |
| Channel Passband | nm | 20nm | |
| Channel spacing | nm | λc±6.5 | |
| Ripple over passband | dB | ≤0.5 | |
| Insertion loss | dB | ≤1.2 | |
| Isolation | Adjacent | dB | ≥30 |
| Non-adjacent | dB | ≥40 | |
| PDL | dB | ≤0.2 | |
| Directivity | dB | ≥50 | |
| Return loss | dB | ≥45 | |
| Operating Temperature | ℃ | -40~+85 | |
| Storage Temperature | ℃ | -40~+85 | |
| Packing Dimension | mm | 20x8x6.5 | |
| Connector | / | As request |
