PM DWDM (Dense Wavelength Division Multiplexer)
Polarization-Maintaining Dense Wavelength Division Multiplexer (PM DWDM) for ITU Grid 50GHz, 100GHz, 200GHz, and 400GHz channel spacing. Features high channel isolation (>30 dB adjacent, >40 dB non-adjacent), low insertion loss (<=0.9 dB), and outstanding thermal stability (<0.003 nm/°C).
Technical Specifications
Parameter
Specification
Unit
Channel Spacing
50 / 100 / 200 / 400
GHz
Center Wavelength
ITU Grid (C-band / L-band)
nm
Center Wavelength Accuracy
±0.05 (50/100GHz), ±0.1 (200GHz), ±0.2 (400GHz)
nm
Channel Passband (@ -0.5 dB)
0.2 (50GHz), 0.22 (100GHz), 0.5 (200GHz), 1.05 (400GHz)
nm
Max. Insertion Loss (Transmission)
1.0 (50/100GHz), 0.9 (200GHz), 0.8 (400GHz)
dB
Max. Insertion Loss (Reflection)
0.4
dB
Min. Isolation (Adjacent Channel)
30
dB
Min. Isolation (Non-Adjacent)
40
dB
Min. Extinction Ratio @ 23°C
18 (Both axes) / 20 (Fast axis blocked)
dB
Max. Channel Flatness
0.3
dB
Wavelength Thermal Stability
<0.003
nm/°C
Insertion Loss Thermal Stability
<0.005
dB/°C
Min. Return Loss
50
dB
Max. Optical Power (CW)
300
mW
Fiber Type
PM Panda Fiber
-
Package Dimensions
dia. 5.5 x 35 mm
mm
Technical Datasheet Note
With connectors, IL increases by 0.3 dB, RL decreases by 5 dB and ER decreases by 2 dB. Custom ITU channel grids, multiport modules, and connector combinations available upon engineering confirmation.
With connectors, IL increases by 0.3 dB, RL decreases by 5 dB and ER decreases by 2 dB. Custom ITU channel grids, multiport modules, and connector combinations available upon engineering confirmation.
Configuration and ordering notes
Channel frequency, channel spacing and transmission-port polarization behavior form the DWDM review basis.
Selection Guidance: Review footprint reduction, splice elimination and optical loss budget in our Mini & Hybrid Devices for CPO & Transceivers Guide ↗ or Mini vs Standard Isolator Guide ↗.
Key Applications
Coherent DWDM optical communication; Multi-wavelength fiber laser systems; High-density optical add/drop multiplexing (OADM); Optical sensing networks.
Package Drawing
Need an exact configuration?
A quotation review can begin with the application, quantity and available component information. Wavelength, optical power, fiber and termination details can be clarified with engineering.