Compensating fiber gratings for source flatness to reduce multiple-access interferences in optical CDMA network coder/decoders

Jen Fa Huang, Chen Mu Tsai, Yu Lung Lo

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)

Abstract

A fiber-Bragg-grating (FBG)-based optical code- division multiple-access (OCDMA) network coder/decoder (codec) is investigated for its interference suppression induced by non- flattened broad-band lightwave sources. Since each network user with different signature address code has different spectral distribution , the nonflattened light sources will cause multiple-access interference (MAI). Flatness compensation schemes are proposed to solve the MAI effects induced by nonflattened broad-band light sources. By arranging the same coding scheme but in different spectral coding band, spectral chips from FBG coder/compensator will incoherently power summed in the photodetectors to approach a more flattened power level. Signal-to-interference ratio (SIR) performances are evaluated with such compensation method for the discussed OCDMA network.

Original languageEnglish
Pages (from-to)739-745
Number of pages7
JournalJournal of Lightwave Technology
Volume22
Issue number3
DOIs
Publication statusPublished - 2004 Mar

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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