Reduction of pattern effects in SOA-based all-optical switches by using cross-gain modulated holding signal

Svend Bischoff, Jesper Mørk

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The effective carrier lifetime of SOAs is typically shortened by an intense Continuous Wave (CW) holding signal. However, the SOA gain is reduced by the holding signal resulting in smaller gain and refractive index changes induced by the data signal. Accordingly, an optimum exists for the CW and data signal power. Here, we demonstrate that the modulation bandwidth (amplitude jitter) is significantly improved (reduced) by replacing the CW holding beam with a signal, which is low-pass filtered and inverted with respect to the data signal. Such a holding beam can be generated by XGM WC in an SOA, and reduces the fluctuations of the total energy injected into the interferometer within a bit-slot. Thus, we demonstrate a technique for reducing pattern effects in SOAs by employing a partially inverted holding beam. The method should be useful for increasing the data rates of all-optical switches.
Original languageEnglish
Title of host publicationSummaries of Papers Presented at the Lasers and Electro-Optics, 2002. CLEO '02. Technical Digest.
Number of pages353
Publication date2002
ISBN (Print)15-57-52705-9
Publication statusPublished - 2002
EventConference on Lasers and Electro-Optics 2002 - Long Beach, CA, United States
Duration: 19 May 200224 May 2002


ConferenceConference on Lasers and Electro-Optics 2002
Country/TerritoryUnited States
CityLong Beach, CA

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