Variable gain semiconductor optical linear amplifier (OLA)

W.C. Michie, A.E. Kelly, A. Tomlinson, I. Andonovic

Research output: Chapter in Book/Report/Conference proceedingConference contribution book


The semiconductor optical amplifier (SOA) is a versatile component that can be deployed to meet the expanding applications associated with the introduction of additional functionalities at the optical level in wavelength division multiplexed systems. The future network requires low cost, small footprint, directly controllable amplification throughout the different application layers from long haul through to metro; the intrinsic size and integration capability advantages will ensure that the SOA plays a key role in this evolution. In multi-wavelength gating/amplification applications the gain dynamics, oscillating at timescales comparable to that of the data which is being amplified, introduce issues of pattern dependent waveform distortion (patterning) in single channel, and inter-channel cross-talk in multi-wavelength cases which require management through careful SOA design and understanding of the network application scenarios. In this paper, an optical linear amplifier (OLA) architecture with the unique capability to provide variable gain whilst maintaining linear operation at high output saturation powers will be described. Initial characterisation results for the OLA will be presented.
Original languageEnglish
Title of host publicationSemiconductor lasers and optical amplifiers for lightwave communication systems
EditorsR.P Mirin, C.S. Menoni
Place of PublicationBellingham
Number of pages8
Publication statusPublished - Jul 2002
EventConference on Semiconductor Lasers and Optical Amplifiers for Lightwave Communication Systems - Boston, United States
Duration: 29 Jul 200230 Jul 2002

Publication series

NameProceedings of the Society of Photo-Optical Instrumentation Engineers (SPIE)
ISSN (Print)0277-786X


ConferenceConference on Semiconductor Lasers and Optical Amplifiers for Lightwave Communication Systems
Country/TerritoryUnited States


  • variable gain
  • semiconductor
  • optical linear amplifier
  • OLA


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