Reductions of multiple-access and optical beat interference with fiber-grating OCDMA balanced decoder

Jen Fa Huang, Yao Tang Chang, Chuen Ching Wang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

An optical spectral coding technique in fiber-grating-based optical code-division multiple-access (OCDMA) system has been investigated in our previous work. In this thesis, the same architecture is set up to investigate the reduction of multiple-access interference caused by the overlapping wavelength from undesired users. Furthermore, the reduction of optical beat interference (OBI) induced by those adjacent grating chips is examined. The reduction of multiple access interference (MAI) and OBI induced by those adjacent grating chips. FBG written as M-sequence and Walsh codes is proposed for such MAI and OBI cancellation in spectrally balanced photo-detectors. Theoretically, M-sequence and Walsh codes are characterized by nearly the same number of "on" chips (i.e., logic "1" chips) and "off" chips (i.e., logic "0" chips). It is seen that the differential decoding scheme characterizes a better performance on eliminating the MAI and OBI problem by mutual cancellation in reflected and transmitted branches of wavelength chips. Furthermore, we propose that the wavelength interleaving allocation method can result in a guard band to suppress OBI. It is shown that SIR has 13 dB improvement with the proposed scheme.

Original languageEnglish
Title of host publicationProceedings - 17th International Conference on Advanced Information Networking and Applications, AINA 2003
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages168-171
Number of pages4
ISBN (Electronic)0769519067
DOIs
Publication statusPublished - 2003 Jan 1
Event17th International Conference on Advanced Information Networking and Applications, AINA 2003 - Xi'an, China
Duration: 2003 Mar 272003 Mar 29

Publication series

NameProceedings - International Conference on Advanced Information Networking and Applications, AINA
Volume2003-January
ISSN (Print)1550-445X

Other

Other17th International Conference on Advanced Information Networking and Applications, AINA 2003
Country/TerritoryChina
CityXi'an
Period03-03-2703-03-29

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Fingerprint

Dive into the research topics of 'Reductions of multiple-access and optical beat interference with fiber-grating OCDMA balanced decoder'. Together they form a unique fingerprint.

Cite this