David fiber device Ltd
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CCWDM, mux/demux, 4CH, 8CH, 20nm channel spacing, 45dB directivity, no connector.
The CCWDM is based on the thin film filter which is the key part in much passive fiber optic device. You maybe know something about CWDM mux/demux then you can understand the CCWDM easily. They have the same function when you use it for your optical transmission. The difference is the space they take, for the same channel, CCWDM has the smaller size than CWDM. This is a good news for limited space.
Feature
Low Insertion Loss
Compact size
Extended Operating Temperature Available
Ultra Stable and Highly Reliable
Application
Optical Add/Drop Multiplexing
Broadband Networks
Telecom networks
Metro networks
| Parameter | 4 Ch | 4+UPG | 8 Ch | 8+UPG1 | 8+UPG2 | ||
| Operating Wavelength (nm) | |||||||
| Channel Wavelength (nm) | 1270,1290,...,1590,1610, or 1271,1291,...,1591,1611 | ||||||
| UPG Port Wavelength Range(nm) | NA | TBD | NA | 1260~1360 | 1260~1457 | ||
| Channel Spacing(nm) | 20 | ||||||
| Channel Passband (nm) | CWL+/-6.5nm | ||||||
| Insertion Loss(dB)* | ≤0.8 | ≤0.8 | ≤1.4 | ≤1.4 | ≤1.7 | ||
| Channel Ripple(dB) | ≤0.3 | ||||||
| Isolation (dB) | Adjacent | >30 | |||||
| Isolation(dB) | Non-adjacent | >40 | |||||
| UPG Isolation(dB) | NA | >15 | NA | >15 | >15 | ||
| Polarization Mode Dispersion(PS) | ≤0.2 | ||||||
| Polarization Dependent Loss(dB) | ≤0.2 | ||||||
| Directivity(dB) | >45 | ||||||
| Return Loss(dB) | >45 | ||||||
| Maximum Power Handling(mW) | 500 | ||||||
| Operating Temperature(℃) | -5~+70 | ||||||
| Storage Temperature (℃) | -40~85 | ||||||
| Fiber Type | G657A1 | ||||||
| Connector | TBD | ||||||
| Package dimension(mm) | L55 x W35 x H8 or L46 x W28 x H6 | ||||||
Remark: Above parameters are tested at room temperature without a connector.
For the device with connectors, 0.3dB higher for IL, 5dB lower for RL and 2dB lower for ER.
Q&A:
Q: What's your Payment terms?
A: We accept TT & Western Union for payment.
Q: How to order a sample?
A: You can contact us directly and tell us your requirements on any of our products.
Q: Could you print our company logo or design on the products?
A: Yes, we can accept your need but we will share the charge with you.
Q: If we decide to move forward with our order what is the next step?
A: You place an order first. Then we will send you PI. After you settle the payment by TT or the Western Union. We will arrange production for you.
Q: What is your normal production lead time for a first order and then for repeat orders?
A: It depends on the product you need. For example, if you purchased a 1550nm fiber circulator for your first order, and then you look for it again, but we will check the material of it and tell you the delivery time.
Q: Do you have warranty policy?
A: Yes, we have. We provide 12 months maintenance warranty.