Reach extension in 10-Gb/s directly modulated transmission systems using asymmetric and narrowband optical filtering

L. S. Yan, Y. Wang, B. Zhang, Changyuan Yu, J. McGeehan, L. Paraschis, A. E. Willner

Research output: Journal article publicationJournal articleAcademic researchpeer-review

30 Citations (Scopus)


Optical filtering has been used to extend the reach of directly modulated laser in 10Gb/s WDM systems via two separate mechanisms: narrowing the broadened spectrum, and converting frequency modulation into useful amplitude modulation. We investigate in detail, the impact of asymmetric and narrowband optical filtering at the transmitter or receiver. Experimental demonstrations for both shorter distance and long-haul like transmission using optical filtering are performed. The transmission reach is nearly doubled from <25-km to >45-km without dispersion compensation. 1400-km error-free transmission (Q>15.6-dB) is further achieved over dispersion-managed link for a directly modulated DFB laser within an 8×10-Gb/s WDM system
Original languageEnglish
Pages (from-to)5106-5115
Number of pages10
JournalOptics Express
Issue number13
Publication statusPublished - 27 Jun 2005
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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