Back Optik nəqliyyat şəbəkəsi Azerbaijani Optisches Transportnetz German Redes de transporte óptico Spanish شبکه انتقال نوری Persian Optical Transport Network Finnish Optical Transport Network Italian Optical Transport Networks Portuguese Стек протоколов OTN Russian Optik taşıma ağı Turkish

Optical transport network

Function diagram 200 Gbit/s transponder/muxponder, aggregating 4x40 Gbit/s and 4x10 Gbit/s in to into a single 200 Gbit/s /OTU2C standard OTN trunk.

An optical transport network (OTN) is a digital wrapper that encapsulates frames of data, to allow multiple data sources to be sent on the same channel. This creates an optical virtual private network for each client signal.

ITU-T defines an optical transport network as a set of optical network elements (ONE) connected by optical fiber links, able to provide functionality of transport, multiplexing, switching, management, supervision and survivability of optical channels carrying client signals.[1] An ONE may re-time, re-Amplify, re-shape (3R) but it does not have to be 3R – it can be purely photonic. Unless connected by optical fibre links, it shall not be OTN. Mere functionality of switching, management, supervision shall not make it OTN, unless the signals are carried through optical fibre. Unlike SONET/SDH, OTN provides a mechanism to manage multiplexed wavelengths in a DWDM system.[2]

  1. ^ ITU-T OTN definitions
  2. ^ "G.709 – The Optical Transport Network (White Paper)" (PDF). VIAVI Solutions Inc. 2021. Retrieved 10 January 2024. The aim of the optical transport network (OTN) is to combine the benefits of SONET/SDH technology with the bandwidth expandability of DWDM.

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