Linear and nonlinear crosstalk suppression for DWDM RZ-DPSK transmitter using a saturated SOA as power booster amplifier

    Authors

    Z. H. Li;G. F. Li

    Comments

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    Abbreviated Journal Title

    IEEE Photonics Technol. Lett.

    Keywords

    crosstalk suppression; four-wave mixing (FWM); return-to-zero; differential phase-shift keying (RZ-DPSK); semiconductor optical; amplifier (SOA); OPTICAL PULSES; Engineering, Electrical & Electronic; Optics; Physics, Applied

    Abstract

    Saturated semiconductor optical amplifiers (SOAs) can be used as booster amplifiers for dense wavelength-division-multiplexing (DWDM) return-to-zero differential phase-shift keying (RZ-DPSK) transmitters. By introducing time interleaving (TI), both linear crosstalk induced by WDM components and nonlinear crosstalk induced by SOA nonlinearities are suppressed. Receiver sensitivities for four-channel DWDM RZ-DPSK signals with 100- and 50-GHz channel spacing were improved 2.2 and 4.2 dB, respectively, by applying proper TI between adjacent channels. A 1-dB gain enhancement was also achieved.

    Journal Title

    Ieee Photonics Technology Letters

    Volume

    18

    Issue/Number

    5-8

    Publication Date

    1-1-2006

    Document Type

    Article

    Language

    English

    First Page

    811

    Last Page

    813

    WOS Identifier

    WOS:000236977500054

    ISSN

    1041-1135

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