Tip of the Week – 13 Aug 2013

Tip of the Week – One or Two Fibers?

Are you still using two optical fibers for your communication systems?

Many fiber spans can be equipped to communicate using only a single optical fiber. The optical signal photons are just as happy travelling in two directions in one fiber as in two fibers. Reducing to one fiber can help decrease your fiber lease costs and increase fiber distribution flexibility.

You will need to use specially designed DWDM or CWDM multiplexers that are equipped for single fiber communication. Also, two different DWDM or CWDM wavelengths need to be used for each communication channel. This means for the same communication channel the optical transceivers at each end of the link will have different channel numbers. Therefor, if you order a 8 wavelength single fiber DWDM multiplexer, it will provide you with 4 communication channels, since 2 wavelengths are used for each channel.

This application is most popular for metro spans where optical amplifiers are not required, since the setup is the simple. However single fiber systems can also included EDFAs but does require more equipment.

Pertinent Products/Services:

Let Telecom Engineering DWDM, CWDM, OADM, M-ROADM Lite multiplexers increase your fiber capacity over 2 or 1 fiber strand. Our systems are compatible with existing manufacturers equipment including Cisco, Fujitsu, Ciena, etc…
Features:

  • Drop or pass through any number DWDM or CWDM channels
  • 50 GHz, 100 GHz, 200 GHz spaced channels
  • Customized channel assignments and functionality
  • Supports up to 100 Gbps DP-QPSK transceivers
  • 8 to 44 channel units available expansion to 80 channels (C-band, 160 channels for C+L bands)
  • Easy to use, no configuration required
  • Two or single fiber communication
  • Optional monitor ports
  • Full access to connector adapters for simple replacement without traffic disruptions on adjacent channels
  • ITU industry standard
  • Available with optional 1310 port for added 1310 window access.
  • Totally passive, no power required
  • High reliability
  • Economical
  • ISO 9001 manufacturing, Telcordia GR-1209 and GR-1221
  • Lifetime Warranty