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Journal of the Optical Society of Korea

Journal of the Optical Society of Korea


  • Vol. 10, Iss. 4 — Dec. 25, 2006
  • pp: 174–177

A Novel Technique to Minimize Gain-Transient Time of WDM signals in EDFA

Seo-Yong Shin, Dae-Hoon Kim, Sung-Chul Kim, Sang-Hun Lee, and Sung-Ho Song  »View Author Affiliations

Journal of the Optical Society of Korea, Vol. 10, Issue 4, pp. 174-177 (2006)

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We propose a new technique to minimize gain-transient time of wavelength-division-multiplexing (WDM) signals in erbium-doped fiber amplifiers (EDFA) in channel add/drop networks. We have dramatically reduced the gain-transient time to less than <TEX>$3{\mu}sec$</TEX> by applying, for the first time to our knowledge, a disturbance observer with a proportional/integral/differential (PID) controller to the control of EDFA gain. The <TEX>$3{\mu}sec$</TEX> gain-transient time is the fastest one ever reported and it is approximately less than 1.5% of <TEX>$200{\mu}sec$</TEX> gain-transient time of commercially available EDFAs for WDM networks. We have demonstrated the superiority of the new technique by performing the simulation with a numerical modeling software package such as the <TEX>$Optsim^{TM}$</TEX>.

© 2006 Optical Society of Korea

OCIS Codes
(060.2320) Fiber optics and optical communications : Fiber optics amplifiers and oscillators

Original Manuscript: December 4, 2006
Revised Manuscript: December 14, 2006
Published: December 25, 2006

Seo-Yong Shin, Dae-Hoon Kim, Sung-Chul Kim, Sang-Hun Lee, and Sung-Ho Song, "A Novel Technique to Minimize Gain-Transient Time of WDM signals in EDFA," J. Opt. Soc. Korea 10, 174-177 (2006)

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