New concept for a regenerative amplifier for passive optical networks

A. Tervonen, M. Mattila, W. Weiershausen, T. Von Lerber, E. Parsons, H. Chaouch, F. Kueppers, S. Honkanen

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


Photonic balancing - a scheme where logically opposite pulses derived from the two outputs of a delay-line demodulator for phase shift keyed (PSK) signals counter-propagate in the saturated regime of a semiconductor optical amplifier (SOA) - has been proven to enhance the receiver performance, e.g. in terms of decreased optical signal-to-noise-ratio (OSNR) requirements for a given target bit error ratio (BER). Here, we extend the photonic balancing scheme towards a new concept for a regenerative amplifier targeted at extending the reach and/or the number of subscribers in passive optical networks (PON) in order to support major operators' plans to reduce the number of central offices and access areas by approximately 90%. For a given target BER, we demonstrate experimentally (a) an 8-dB higher post-amplifier loss tolerance, (b) an extended feeder line length (75 km) combined with high splitting ratio (10 layers) for a preamplified version, and (c) high input power variation tolerance (> 30 dB burst-to-burst) in upstream direction as needed for highly asymmetric tree structures.

Original languageEnglish
Title of host publicationOptical Metro Networks and Short-Haul Systems III
Publication statusPublished - 2011
Externally publishedYes
EventOptical Metro Networks and Short-Haul Systems III - San Francisco, CA, United States
Duration: 25 Jan 201127 Jan 2011

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X


ConferenceOptical Metro Networks and Short-Haul Systems III
Country/TerritoryUnited States
CitySan Francisco, CA


  • Nonlinear optical signal processing
  • Passive optical networks
  • Phase modulation
  • Semiconductor optical amplifiers


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