dwdm telcome telecommunication filter
dwdm telcome telecommunication filter

DWDM Filter

DWDM filter is an optical component specially designed for optical communication systems. Coligh supplies a variety of customized filters for optical communication systems

DWDM filter has the following features:

  • The central wavelength complies with ITU standards, with a deviation of only +0.3~+0.7nm
  • Supports 1500-1620nm, covering C-band and L-band
  • Adjacent channel isolation ≥28dB, with little signal interference
  • 0.5dB bandwidth ≥0.43nm, suitable for high-density DWDM transmission.
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DWDM Filter Description

The DWDM filter supplied by Coligh supports O band (1260-1360nm) and C band (1460-1620nm), covering the deployment requirements of traditional DWDM systems and next-generation ultra-fast networks, and meeting the needs of different optical communication equipment.

  • The isolation between channels is >=30db, which can effectively reduce signal crosstalk and improve system stability.
  • 0.5dB bandwidth ≥0.43nm ultra-narrow bandpass filtering can provide higher channel density and improve fiber utilization.
  • Support 5G and data center applications: meet the needs of 5G network fronthaul/backhaul and data center interconnect (DCI) for high-speed and high-reliability optical transmission.
  • It also comply with ITU-T certification

DWDM Telecommunication Filter Spectrum Performance

DWDM Filter Technical Datasheet

Parameters Specifications
Operation Wavelength 1500-1620 nm
Angle Of Incidence  1.8 degree
Center Wavelength @ 0.5dB ITU+0.3 ~ ITU+0.7nm
Pass Band Width @ 0.5dB >=0.43 nm
Stop Band Width <= 1.2 nm
Transmission Isolation within Adjacent Channel >= 28 db
Ripple within Pass Band <= 0.3 db
Reflection Isolation >= 13 db
Polarization Dependent Loss  within Pass Band <= 0.1 db
Ripple within StopBand <=0.15 db

DWDM Filter Applications

DWDM filters have many application scenarios, such as:

  • In backbone networks and metropolitan area networks, they can support data center interconnection and fiber-to-the-home, and are suitable for long-distance, high-bandwidth data transmission
  • DWDM filters can also be used for large bandwidth connections that require high speed and low latency, such as cloud computing, Internet companies, and financial institutions to build transmission networks
  • DWDM filters play an important role in cloud computing, supercomputing centers, and large-scale data, and can improve the efficiency of communication between servers
  • DWDM filters can be used for precision optical measurement and sensing applications, such as fiber optic sensing systems in aerospace, industrial detection, and other fields

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