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
|
λ ±0.11
|
λ ±0.25
|
|
Passband Flatness
|
nm
|
≤0.5
|
|
Bandwidth(@-0.5dB)
|
nm
|
≥0.3
|
≥0.6
|
|
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
|
≥25
|
≥25
|
|
Non-adjacent Channel Isolation
|
dB
|
≥45
|
|
Isolation (Reflective Channel)
|
dB
|
≥12
|
≥12
|
|
Return Loss
|
dB
|
≥45
|
|
PDL
|
dB
|
≤0.10
|
|
Directivity
|
dB
|
≥50
|
|
Operation Temperature
|
℃
|
-5~+70
|
|
Storage Temperature
|
℃
|
-40~+85
|
|
Package
|
mm
|
Φ5.5×38 or 90x20x9.5
|
Notes:
1. All the values are tested under room temperature.
2. All insertion loss don't include connector loss.
DWDM器件主要用于無源波分復(fù)用系統(tǒng)模塊產(chǎn)品，它具有低插入損耗、低偏振、高通道隔離度及高環(huán)境穩(wěn)定性和可靠性等特點(diǎn)，適用于長(zhǎng)距離、大容量長(zhǎng)途干線網(wǎng)或超大容量的城域網(wǎng)核心節(jié)點(diǎn)等，廣泛應(yīng)用于城域網(wǎng)、電信5G、主干網(wǎng)、數(shù)據(jù)中心等領(lǐng)域
