DWDM Over CWDM
DWDM over CWDM Network to Increase Bandwidth, with Monitor and 1310nm Port, LC UPC, 1U Rack Mount, Arkoptics
Description
Description
CWDM was firstly developed as a WDM technology to increase the bandwidth of an optical fiber by multiplexing several wavelengths (or colors) onto it. It has long been widely used as the most cost-effective and budget saving method for SDH (STM-1, STM-4, STM-16, STM- 64), IP (Fast Ethernet, Gigabit Ethernet, 10 Gigabit) ATM and storage (1G, 2G, 4G, 8G, 10G Fiber Channel) networks.
Typically, CWDM networks only support up to 18 different wavelengths, and CWDM transmission distance is shorter than DWDM because standard amplifier cannot cover all the CWDM operating wavelength. Network operators must optimize their network infrastructure if they hope to meet the ever-growing demand for bandwidth. Therefor, it rises a need of deploying DWDM network over the existing CWDM network.
DWDM wavelengths have much smaller channel spaces (0.4nm/0.8nm/1.6nm) than CWDM 20nm channel space, so DWDM can provide larger bandwidth than CWDM. DWDM C-Band features the lowest fiber attenuation and standard optical EDFA amplifiers can be used to extend the bridgeable distance. At the meanwhile, DWDM overlap with CWDM band near the 1530nm and 1550nm. This overlap provides the possibility of combing DWDM with CWDM to increase network capacity.
Multiplexing DWDM over CWDM Network
Build a DWDM over CWDM Network to Maximizing Network Capacity and Add New Links over Same WDM System
Hybrid DWDM and CWDM networks can maximize the use of existing infrastructure to support more wavelengths.
Arkoptics hybrid DWDM and CWDM network solution helps our client expand their current network capacity, and offers a flexible way to add new sites for the existing link without affecting the whole link, which will reduce the networking cost and maximize ROI.
Specifications
 4CH CWDM |  8CH CWDM |  8CH CWDM |  9CH CWDM |  16CH CWDM |  18CH CWDM | |
| Channel | 4CH+UPG | 8CH+MON+UPG | 8CH+MON+UPG | 9CH | 16CH Mux Demux | 18CH+MON |
| Transmission | Dual Fiber | Single Fiber | Dual Fiber | Single Fiber | Dual Fiber | Dual Fiber |
| Channel Center Wavelength | 1270-1330nm or 1550-1610nm or 1470,1490,1590,1610nm | 1270-1590nm 1290-1610nm Skip 1390,1410nm | 1470-1610nm or 1270-1450nm Skip 1390,1410nm | 1270-1590nm 1290-1610nm | 1310-1610nm or Custom | 1270-1610nm |
| Technology Type | TFF | TFF | TFF or Free-Space | TFF | TFF | TFF |
| Channel Spacing | 20nm | |||||
| Channel Passband | λc ±6.5nm or ±7nm | |||||
| Link Loss per Channel | ≤ 2.0dB | ≤ 4.5dB | ≤ 3.5dB | ≤ 4.0dB | ≤ 4.0dB | ≤ 4.5dB |
| Insertion Loss per Channel | ≤ 1.2dB | ≤ 3.5dB | ≤ 2.5dB | ≤ 3.0dB | ≤ 3.0dB | ≤ 3.0dB |
| Insertion Loss Monitor Port | N/A | ≤ 24dB | ≤ 24dB | N/A | N/A | ≤ 24dB |
| Insertion Loss UPG Port | ≤ 1.2dB | ≤ 3.5dB | ≤ 2.5dB | N/A | N/A | N/A |
| Channel Isolation | Adjacent≥30dB; Non-adjacent≥45dB | |||||
| Passband Ripple | ≤ 0.5dB | |||||
| Directivity | ≥50dB | |||||
| Return Loss | ≥45dB | |||||
| Polarization Dependent Loss | ≤ 0.2dB | |||||
| Polarization Mode Dispersion | ≤ 0.2ps | |||||
| Power Handling | ≤ 500mW | |||||
| Fiber Type | ITU-T G657 A1 | |||||
| Connector Type | LC UPC or Other Conn. | |||||
| Operating Temperature | -5°C to +70°C or -40°C to +85°C | |||||
| Storage Temperature | -40°C to +85°C | |||||
| Dimension | Plug-in Module 1RU 19” Rack Mount | Plug-in Module 1RU 19” Rack Mount | Plug-in Module 1RU 19” Rack Mount | Plug-in Module 1RU 19” Rack Mount | 120x80x18mm ABS 1RU 19” Rack Mount | 120x80x18mm ABS 1RU 19” Rack Mount |
