10CH CWDM ABS MUXDEMX
Coarse wavelength division multiplexer (CWDM) is a low-cost WDM transmission technology used at the access layer of metropolitan area networks. In principle, CWDM uses an optical multiplexer to multiplex optical signals of different wavelengths into a single optical fiber for transmission. At the receiving end of the link, an optical demultiplexer is used to decompose the mixed signals in the optical fiber into signals of different wavelengths and connect them to the corresponding receiving equipment.
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1. Working band
The working band of WDM devices, such as 1550 wavelength, is divided into three bands: S band (short wavelength band 1460~1528nm), C band (conventional band 1530~1565nm), L band (long wavelength band 1565~1625nm).
2. Number of channels and channel spacing
The number of channels refers to the number of channels that can be synthesized or separated by the wavelength division multiplexer/demultiplexer. This number can range from 4 to 160. The design is enhanced by adding more channels. Common channel numbers are 4, 8, 16, 32, 40, 48, etc. Channel spacing refers to the difference in the nominal carrier frequency of two adjacent channels, which can be used to prevent interference between channels. According to the recommendation of ITU-T G.692, the spacings less than 200GHz (1.6nm) include 100GHz (0.8nm), 50GHz (0.4nm) and 25GHz. Currently, 100GHz and 50GHz channel spacings are preferred.
3. Insertion loss
4. Isolation
5. Polarization-dependent loss PDL
Polarization-dependent loss PDL is the distance between the maximum and minimum loss caused by different polarization states at a fixed temperature, wavelength and the same band, that is, the maximum deviation of insertion loss under all input polarization states.
| 1270 | 1290 | 1310 | 1330 | 1350 | 1370 | 1390 | 1410 | 1430 | 1450 | |||||
| <0.3 | 0.49 | 0.73 | 1.03 | 1.39 | 1.53 | 1.65 | 2.00 | 2.19 | 2.22 | 2.57 | ||||
| <0.3 | ||||||||||||||
| <0.1 | ||||||||||||||
| <0.1 | ||||||||||||||
| >30 | ||||||||||||||
| Non-adjacent(dB) | >45 | |||||||||||||
| >50 | ||||||||||||||
| >45 | ||||||||||||||
| 1.0M | ||||||||||||||
| SMF{{0}}e 2.0Loose Tube | ||||||||||||||
| -20~+70 | ||||||||||||||
| -40~+85 | ||||||||||||||
| 120*80*18 | ||||||||||||||
Tagiau poblogaidd: 10CH CWDM ABS MUXDEMX, China 10CH CWDM ABS MUXDEMX suppliers, manufacturers, factory
