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Proceedings Paper

Transient-suppression time requirements for advanced agile optical amplifiers
Author(s): Véronique François; Pierre de Villers; Sergei Likhanski; Chung-Nak Lee; Denis Lafrance
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Paper Abstract

Agile optical amplifiers must preserve constant gain and flatness over a wide range of input conditions to meet the needs of reconfigurable optical networks. Though routers and switches used to perform system protection or network reconfiguration feature slow transition times, reported theoretical and experimental analyses of the dynamics of agile EDFAs have focused on fast, sub-microsecond input-signal transitions. As a result, only low population inversion, one- or two-stage baseline amplifiers practically provide acceptable transient performance over the entire dynamic and wavelength range of operation. On the other hand, advanced, versatile optical amplifiers, which are highly desirable to perform system-level controls such as gain adjustment or reconfigurable wavelength add-drops at mid-stage, feature large excursions in these input conditions. In this paper, we discuss the line-transient times in view of today's switching technologies and Standards and provide experimental evidence of the suitable performance of advanced agile amplifiers at system switch speeds. The amplifier used is a very high-performance, agile device, which relies on a 3 μs feedback loop. Input transients up to 15 dB were studied, showing excursions smaller than 1 dB and steady-state gain errors no larger than 0.2 dB.

Paper Details

Date Published: 16 November 2004
PDF: 6 pages
Proc. SPIE 5579, Photonics North 2004: Photonic Applications in Telecommunications, Sensors, Software, and Lasers, (16 November 2004); doi: 10.1117/12.567066
Show Author Affiliations
Véronique François, MPB Communications Inc. (Canada)
Pierre de Villers, MPB Communications Inc. (Canada)
Sergei Likhanski, MPB Communications Inc. (Canada)
Chung-Nak Lee, MPB Communications Inc. (Canada)
Denis Lafrance, MPB Communications Inc. (Canada)


Published in SPIE Proceedings Vol. 5579:
Photonics North 2004: Photonic Applications in Telecommunications, Sensors, Software, and Lasers
Donna Strickland; Trevor J. Hall; Stoyan Tanev; Xiaoyi Bao; Franko Kueppers; David V. Plant, Editor(s)

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