Optical and Computer Network Technologies

Posted by on Jan 12, 2025 in Optics and Optometry | 0 comments

Section C: Generations of Networks

First Generation Optical Networks

In these networks, optical fiber is used purely as a transmission medium, replacing copper cable. Switching and processing of the bits are handled by electronics. Examples include SONET, SDH, and FDDI.

Second Generation Optical Networks

In these networks, some of the switching and routing functions are done in the optical domain. Examples include OTDM and WDM.

Elements of SONET/SDH

  • TM: Terminal Multiplexers
  • UPSR: Unidirectional Path-Switched
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