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CWDM Mux / DeMux Module
Passive Components > WDM & Splitters

CWDM Mux / DeMux Module

CWDM multiplexer / demultiplexer modules for cost-effective wavelength expansion.

PDR CWDM Mux/DeMux offers 4/8/16-channel CWDM (1270–1610 nm) in ABS, LGX, and 1U rack formats with low loss, high isolation, and reliable optical performance.
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Technical Specifications

CWDM Wavelength Grid1270, 1290, 1310 … 1570, 1590, 1610 nm (20 nm channel spacing)
Channel Configurations4 Channel | 8 Channel | 16 Channel
IL, ABS Compact Module (Narrow PB)4ch: ≤1.6 dB | 8ch: ≤2.8 dB | 16ch: ≤4.5 dB
IL, ABS Compact Module (Wide PB)4ch: ≤2.0 dB | 8ch: ≤3.6 dB | 16ch: ≤5.0 dB
IL, 1U Rack Equipment4ch: ≤1.8 dB | 8ch: ≤3.0 dB | 16ch: ≤4.8 dB
IL, LGX Module4ch: ≤1.8 dB | 8ch: ≤3.0 dB | 16ch: ≤4.8 dB
Passband, ABS Compact (Narrow PB)±0.11 nm (@−0.5 dB)
Passband, ABS Compact (Wide PB)±6.5 nm (@−0.5 dB)
Passband, 1U Rack / LGX Module±7.5 nm (@−0.5 dB)
Isolation, Adjacent Channel> 30 dB
Isolation, Non-Adjacent Channel> 40 dB
Passband Ripple≤0.40 dB
Polarization Dependent Loss (PDL)< 0.30 dB
Polarization Mode Dispersion (PMD)< 0.10 ps

Key Features

  • Four form factors: ABS Compact Module (two sizes), 1U Rack Equipment, and LGX Module
  • Supports 4, 8, and 16 channel configurations across the CWDM grid from 1270 nm to 1610 nm
  • Low insertion loss: ≤1.6 dB (4ch), ≤2.8 dB (8ch), ≤4.5 dB (16ch) for ABS Compact Module
  • High adjacent channel isolation >30 dB; non-adjacent channel isolation >40 dB
  • Low passband ripple ≤0.40 dB and polarization dependent loss <0.30 dB across all variants
  • Return loss >45 dB and directivity >50 dB for excellent signal integrity

Applications & Use Cases

  • CATV and cable television headend signal multiplexing and distribution across CWDM wavelength bands
  • Metro and access WDM network capacity expansion using the full 1270 to 1610 nm CWDM grid
  • Optical network monitoring and per-wavelength channel management in carrier-grade systems
  • Test and measurement equipment for wavelength-selective optical characterisation