4，8,16-Channel CWDM Module
CWDM is a low-cost WDM transmission technology for metro access layer. In principle, CWDM is the use of different wavelengths of light multiplexer, optical signal multiplexing to a single optical fiber transmission link on the receiving end, with the optical demultiplexer mixed-signal in the fiber is broken down into different wavelengths signal connected to the receiving device. The principle shown in Figure 1. The main difference lies in DWDM: relative to DWDM systems in terms of the wavelength interval in the 0.2nm to 1.2nm, CWDM has a wider wavelength interval, the industry accepted standard wavelength spacing of 20nm.1. Description
Features
Low Insertion Loss
High Isolation
Low PDL
Compact Design
Good channel-to-channel uniformity
Wide Operating Wavelength:From 1260nm to 1620nm
Wide Operating Temperature:From -40℃ to 85℃
High Reliability and Stability
Applications
CWDM System
PON Networks PON
2. Specifications
1×N CWDM Mux/Demux Module
Parameters
1x2
1x4
1x8
1x16
Center Wavelength (nm)
ITU, ITU+1
Passband (nm)
ITU±6.5
Operating Wavelength (nm)
1460~1620 or 1260~1620
Channel Space (nm)
20
Fiber Type
SMF-28e or customer specified
IL (dB) (P/A Grade)
0.7/1.0
1.4/1.7
2.0/2.5
3.5/4.0
Isolation (dB)
Adjacent Channel
30
Non-Adjacent Channel
50
Ripple (dB)
0.3
0.4
0.5
0.5
PDL (dB)
0.2
PMD (ps)
0.1
RL (dB)
45
Directivity (dB)
50
Maximum Optical Power (mw)
500
Operating Temperature (℃)
-40～85
Storage Temperature (℃)
-40～85
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