The adjacent channels of CCWDM use parallel beams to cascade in free space instead of using optical fibers. Without thefiber used in cascade, the size of CCWDM package can reach 54x25x7mm, which is about three times smaller than that of standard CWDM package.
CCWDM optical module is widely used in the fields of coarse wavelength division multiplexing system, PON network, CATV link, telecommunication network, enterprise network, metropolitan area network WDM system, 4G/5G communication mobile system,100G solution, access network, metropolitan area network WDM system, optical fiber tools and so on.
| Parameter | Value |
| Center Wavelength | 8ch CWDM ITU+ Exp. channel |
| Channel Spacing | 20 nm |
| Channel Passband | ±6.5 nm |
| Insertion Loss (CWDM. Port) | ≤2.0dB |
| Insertion Loss (Exp. Port) | ≤2.4dB |
| Adjacent Channel Isolation | ≥ 30 dB |
| Non-adjacent Channel Isolation | ≥ 40 dB |
| Filter Technology | TFF (Thin Film Filter) |
| Passband Ripple | ≤ 0.5 dB |
| Return Loss | ≥ 45 dB |
| Directivity | ≥ 50 dB |
| Polarization Dependent Loss | ≤ 0.3 dB |
| Power Handling | ≤ 300 mW |
| Operating Temperature | -40°C~ +85°C |
| Storage Temperature | -40°C~ +85°C |
| Fiber length | 1.0-1.1m |
| Fiber Type | Corning G657A2 |
| Pigtail and Connector Type | 0.9mm loose tube with LC/UPC connector |
| Package Dimension | (L)54×(W)25×(H)7mm aluminum alloy box |
Note: Losses above include connector loss and adapter loss.
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