Three-port DWDM device is mainly used in passive wavelength division multiplexing module. It is a kind of wavelength division multiplexing technology based on TFF (thin film filter). It has a variety of package sizes and wavelength options. It consists of three ports: COM, Pass and Reflect. Compared with CWDM, DWDM has 100 GHz, 200 GHz channel spacing, which greatly increases the number of working wavelength, thus greatly increases the signal transmission speed and communication capacity. It is suitable for long-distance, large-capacity trunk network, or ultra-large capacity MAN core nodes, and is widely used in telecommunications, radio and television, 5G and other fields.
|
Parameter
|
Unit
|
Value
|
|
Channel space
|
|
100GHz
|
200GHz
|
|
Central Wavelength
|
nm
|
ITU-T Grid
|
|
Channel Passband
|
dB
|
¦Ë ¡À0.11
|
¦Ë ¡À0.25
|
|
Passband Flatness
|
nm
|
¡Ü0.5
|
|
Bandwidth(@-0.5dB)
|
nm
|
¡Ý0.3
|
¡Ý0.6
|
|
Insertion Loss (pass Channel
|
dB
|
Typ.0.8, Max.1.0
|
|
Insertion Loss (Reflective Channel)
|
dB
|
Typ. 0.6, Max.0.8
|
|
Adjacent Channel Isolation
|
dB
|
¡Ý25
|
¡Ý25
|
|
Non-adjacent Channel Isolation
|
dB
|
¡Ý45
|
|
Isolation (Reflective Channel)
|
dB
|
¡Ý12
|
¡Ý12
|
|
Return Loss
|
dB
|
¡Ý45
|
|
PDL
|
dB
|
¡Ü0.10
|
|
Directivity
|
dB
|
¡Ý50
|
|
Operation Temperature
|
¡æ
|
-5~+70
|
|
Storage Temperature
|
¡æ
|
-40~+85
|
|
Package
|
mm
|
¦µ5.5¡Á38 or 90x20x9.5
|
Notes:
1. All the values are tested under room temperature.
2. All insertion loss don't include connector loss.
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