High Capacity Transmission of Adaptively Modulated Optical OFDM Signals over Multimode Fibres using Directly Modulated DFBs

J. M. Tang, P. M. Lane, K. A. Shore

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

1 Citation (Scopus)

Abstract

Numerical simulations of the transmission performance of a recently proposed optical signal modulation technique, adaptively modulated optical orthogonal frequency division multiplexing (AMOOFDM), are undertaken in un-amplified multi-mode fibre (MMF)-based links using directly modulated DFB lasers (DMLs). It is shown that 28 Gb/s over 300 m and 10 Gb/s over 900 m transmission of intensity-modulation and direct-detection (IMDD) AMOOFDM signals at 1550 nm is feasible in DML-based links using MMFs with 3-dB effective bandwidths of as small as 150 MHz.km. Apart from a higher signal transmission capacity, AMOOFDM also has a greater spectral efficiency and is less susceptible to different launching conditions, modal dispersion and fibre types, compared with all existing schemes. In addition, a large noise margin of about 15 dB is also observed. The bits of resolution of analogue-to-digital converters and the cyclic prefix of AMOOFDM symbols are the main factors limiting the maximum achievable performance, on which the influence of DMLs is, however, negligible under the optimum operating condition.

Original languageEnglish
Title of host publicationIEE Seminar on Optical Fibre Communications and Electronic Signal Processing
Subtitle of host publication(Ref No. 2005-11310)
PublisherIET
Number of pages6
Edition11266
ISBN (Print)0863415989, 9780863415982
DOIs
Publication statusPublished - 15 Dec 2005
Externally publishedYes
EventIEE Seminar on Optical Fibre Communications and Electronic Signal Processing - London, United Kingdom
Duration: 15 Dec 200515 Dec 2005

Publication series

NameIET Seminar Digest
Number11266
Volume2005
ISSN (Print)0537-9989

Conference

ConferenceIEE Seminar on Optical Fibre Communications and Electronic Signal Processing
CountryUnited Kingdom
CityLondon
Period15/12/0515/12/05

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