CWDM (Coarse Wavelength Division Multiplexers)
CWDM (Coarse Wavelength Division Multiplexers)

CWDM (Coarse Wavelength Division Multiplexers)

Regular price $0.00

CWDM (Coarse Wavelength Division Multiplexer) is based on thin-film filter technology and patented a thermal platform system for optical devices. The CWDM is used to combine or separate different optical wavelength signals. This device offers a very flat and wide passband, low insertion loss, and high isolation, which make it ideal for CWDM Network applications and Optical Amplification Systems. KOC CWDM devices are Bell core GR-1221 qualification tested and are in compliance with industry green initiatives such as RoHS and WEEE. All KOC CWDM products are epoxy-free in the optical path.


  • Widely Operating Wavelength Range
  • Low Insertion Loss
  • High Channel Isolation
  • High Stability and Reliability
  • Insensitive to shock and vibration
  • Ultra Flat Wide Pass band
  • Epoxy Free Optical Path


  • System Monitoring
  • WDM System
  • Transmitters and Fiber lasers
  • Fiber Optical Amplifier
  • Fiber optic instruments
Parameter   Specification Unit
Channel Center Wavelength   1270-'1610 or 1271-”1611 nm
Channel Spacing   20 nm
Channel Clear Passband   ITU+7 nm
Transmission Insertion Loss Max 0.8 (Typ 0.6) dB
Reflection Insertion Loss Max 0.6 (Typ 0.4) dB
Passband Ripple Max 0.3 dB
Transmission Isolation Min 30 dB
Reflection Isolation Min 12 dB
Return Loss Min 45 dB
Directivity Min 45 dB
Polarization Dependent Loss Max 0.1 dB
Operating Temperature Range   0~ + 70 °C
Storage Temperature Range   -40~+85 °C
Maximum Power Handling   300 mW
Package Dimension (L" ¢)   38*5.5 mm
CWDM-3P Center wavelength Fiber Type Connector Type
  1271~1611; 1270~1610Example: 1271 = 1271nm 1: 250μm bare fiber 0: Without connector
  2:900μm tight buffer fiber 1:FC/ PC 2:FC/UPC 3:FC/APC
  other   4:SC/PC S:SC/UPC 6:SC/APC
      7:ST 8:LC 9:MU X:Cusmized