Dense Wavelength Division Multiplexing (Dense Wavelength Division Multiplexing) technology, also known as DWDM, refers to an optical fiber data transmission technology. This technology uses the wavelength of the laser to transmit in parallel according to bits or string line transmission. Data is transmitted in the optical fiber. DWDM is an important part of the optical fiber network. It allows IP, ATM, and synchronous optical network / synchronous digital sequence (SONET / SDH) protocols to carry e-mail, video, multimedia, data, and voice data through a unified optical fiber Layer transmission.
Parameter | 4 Channel | 8 Channel | 16 Channel | |||
Mux | Demux | Mux | Demux | Mux | Demux | |
Channel Wavelength(nm) | 1270~1610 | |||||
Center wavelength Accuracy(nm) | ±0.5 | |||||
Channel Spacing(nm) | 20 | |||||
Channel Pass band(@-0.5dB bandwidth (nm) | >14 | |||||
Insertion Loss(dB) | ≤1.4 | ≤2.6 | ≤5.0 | |||
Channel Uniformity (dB) | ≤0.5 | ≤0.5 | ≤0.5 | |||
Channel Ripple (dB) | 0.3 | |||||
Isolation (dB) Adjacent | N/A | >30 | N/A | >30 | N/A | >30 |
| Non-adjacent | N/A | >40 | N/A | >40 | N/A | >40 |
Insertion Loss Temperature Sensitivity (dB/℃) | <0.005 | |||||
Wavelength Temperature Shifting (nm/℃) | <0.002 | |||||
Polarization Dependent Loss (dB) | <0.1 | |||||
Polarization Mode Dispersion (PS) | <0.1 | |||||
Directivity (dB) | >50 | |||||
Return Loss(dB) | >45 | |||||
Maximum Power Handling(mW) | 500 | |||||
Operating Temperature(℃) | -5~+75 | |||||
Storage Temperature (℃) | -40~85 | |||||
Package dimension(mm) | 1. L100 x W80 x H10 ( 2 CH~8CH Module) | |||||
| 2. L120xW800xH18 (9 CH~18CH Module) | ||||||
Low loss
High channel isolation
Can reach industrial grade
Boosted by Erbium-doped-fiber amplifiers (EDFAs), the DWDM systems can support point-to-point ultra-long haul applications without the need to add costly regenerators.
By real-time monitoring the power status in working fiber through OLP, the traffic will be automatically diverted to the protection line if the working line fails, which greatly reduces the huge loss of data information.
CWDM wavelengths range from 1260-1625nm, channel spacing is 20nm, which actually cover all the range of DWDM wavelengths (1470-1625nm). And DWDM wavelengths have much smaller channel spaces (0.4nm/0.8nm). Therefore, the CWDM wavelengths near
DWDM wavelengths can be used to transmit the DWDM wavelengths. In most practical applications, CWDM 1530nm channel is used to achieve hybrid CWDM & DWDM.
Order Information
Configuration | Channel No. | Channel | Pigtail Type | Fiber length | Dimensio(mm) | Connector |
M=Mux D=Demux | 04=4 Channel 08=8 Channel 16=16 Channel N=N Channel …… | 27=1270nm 47=1470nm 49=1490nm …… 61=1610nm SS=special… | 0=250um 1=900um 2=2.0mm | 1=1m | 1=L100 x W80 xH10 2=L120xW80xH18 3=19 1U Rack | 0=None 5=other |
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Parameter | 4 Channel | 8 Channel | 16 Channel | |||
Mux | Demux | Mux | Demux | Mux | Demux | |
Channel Wavelength(nm) | 1270~1610 | |||||
Center wavelength Accuracy(nm) | ±0.5 | |||||
Channel Spacing(nm) | 20 | |||||
Channel Pass band(@-0.5dB bandwidth (nm) | >14 | |||||
Insertion Loss(dB) | ≤1.4 | ≤2.6 | ≤5.0 | |||
Channel Uniformity (dB) | ≤0.5 | ≤0.5 | ≤0.5 | |||
Channel Ripple (dB) | 0.3 | |||||
Isolation (dB) Adjacent | N/A | >30 | N/A | >30 | N/A | >30 |
| Non-adjacent | N/A | >40 | N/A | >40 | N/A | >40 |
Insertion Loss Temperature Sensitivity (dB/℃) | <0.005 | |||||
Wavelength Temperature Shifting (nm/℃) | <0.002 | |||||
Polarization Dependent Loss (dB) | <0.1 | |||||
Polarization Mode Dispersion (PS) | <0.1 | |||||
Directivity (dB) | >50 | |||||
Return Loss(dB) | >45 | |||||
Maximum Power Handling(mW) | 500 | |||||
Operating Temperature(℃) | -5~+75 | |||||
Storage Temperature (℃) | -40~85 | |||||
Package dimension(mm) | 1. L100 x W80 x H10 ( 2 CH~8CH Module) | |||||
| 2. L120xW800xH18 (9 CH~18CH Module) | ||||||
