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Quebec – Apr 15, 2020

App Note: Managing Chromatic Dispersion in 100G PAM4 DWDM Links

Appnote TDCMX-SM

As bandwidth demand has surged in the last few years and especially over the last weeks, service and internet content providers have looked for future-proof, low-cost and low power consumption solutions to increase bandwidth. For applications limited to 80 km or less, such as DCI, 100G direct-detection solutions based on four-level pulse amplitude modulation (PAM4) have proven an interesting avenue, but managing chromatic dispersion holds back many organizations who fear it will be a burden.

This application note will show how the ClearSpectrum™ TDCMX-SM makes managing chromatic dispersion simple and cost-effective, enabling the advantages of 100G DWDM PAM4 up to 80 km.

Read this app note to learn:

  • What to look out for when managing chromatic dispersion in PAM4 and multi rate schemes
  • How a single tunable dispersion compensator (TDCM) can be used to compensate for every channel of the C-band up to 80 km
  • What fiber Bragg grating (FBG) based TDCMs are and what they bring for PAM4 applications

Read the App Note