With the development of data communication and telecommunications technology, a metropolitan area network is a full-service network that integrates voice, data, and images. Since the transmission distance of the metropolitan area network is usually no more than 100km, the system does not require high transmission attenuation of single-mode fiber, and does not require the use of fiber amplifiers. In order to use the bandwidth window of 1270~1610nm and set the interval between adjacent wavelengths to 20nm, a multiplexing system of 18 wavelengths can be formed, which is a coarse wavelength division multiplexing system. Therefore, the coarse wavelength division multiplexer CWDM (CWDM: Coarse Wavelength Division Multiplexing) is one of the most important components in the coarse wavelength division multiplexing system. CWDM has the characteristics of low cost, low power consumption, small size, flexible networking mode, etc., which makes the current CWDM system widely used. All CWDM devices provided by Kehai have undergone 24-hour high and low temperature cycling and drop tests, and the product quality is reliable and stable.
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Description
1. Features
- Low Insertion Loss
- High Isolation
- Low PDL
- Compact Design
- Wide Operating Wavelength: 1260nm~1620nm
- Wide Operating Temperature: -45℃~85℃
- High Reliability and Stability
2. Applications
CWDM System
PON Networks
CATV Links
3. Compliance
Telcordia GR-1209-CORE-2001
Telcordia GR-1221-CORE-1999
ITU-T G.694.1
RoHS
4. Specifications
| Parameters | ||
| Center Wavelength (nm) | ITU,ITU+1 | |
| Passband(nm) | ITU±6.5 | |
| Operating Wavelength (nm) | 1260-1620 | |
| Channel Space(nm) | 20 | |
| Fiber Type | SMF-28e or customer specified | |
| IL(dB) | Transmission band | ≤0.6 |
| Reflection band | ≤0.4 | |
| Isolation(dB) | Transmission band | ≥30 |
| Reflection band | ≥12 | |
| Ripple (dB) | ≤0.3 | |
| Polarization Dependent Loss (dB) | ≤0.1 | |
| Polarization Mode Dispersion (ps) | ≤0.1 | |
| RL (dB) | ≥45 | |
| Directivity (dB) | ≥50 | |
| Maximum Optical Power (mw) | 500 | |
| Operating Temperature (℃) | -5～75or-45～85 | |
| Storage Temperature (℃) | -40～85 | |
| Package Dimension (mm) (Φ*L) | 5.5*34（250um） | |
| Package Dimension (mm) (Φ*L) | 5.5*38（0.9mm） | |
Notes:
1. Specified without connectors.
2. Add an additional 0.2dB loss per connector.
5．Mechanical Dimensions
6. Ordering Information
| QWD | - | XX | X | XX | X | XX | - | X | X | X |
| Port Configuration | WDM Type | Center Wavelength | Fiber Type | Output Fiber Length | COM Port Connector | Pass Port Connector | Reflection Port Connector | |||
| Q-Qualfiber | 01=1*1 | C=CWDM 1460-1620 | 47=1470/1471 | B=250um bare fiber | 10=1.0m | 0=None | 0=None | 0=None | ||
| W=WDM | 02=1*2 | Q=CWDM 1260-1620 | ……. | L=900um loose tube | 12=1.2m | 1=FC/UPC | 1=FC/UPC | 1=FC/UPC | ||
| D= Device | 61=1610/1611 | T=900um tight buffer | 15=1.5m | 2=FC/APC | 2=FC/APC | 2=FC/APC | ||||
| …… | 3=SC/UPC | 3=SC/UPC | 3=SC/UPC | |||||||
| XX=Customized | 4=SC/APC | 4=SC/APC | 4=SC/APC | |||||||
| 5=LC/UPC | 5=LC/UPC | 5=LC/UPC | ||||||||
| 6=LC/APC | 6=LC/APC | 6=LC/APC | ||||||||
| X= Customized | X= Customized | X= Customized |
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