This thesis describes the outcome of study to investigate methods of
broadband matching to photonic devices such as lasers and high speed detectors.
The thesis is divided into two areas of interest relating to the design of
broadband fiber optic links.
The first area is the application of numerical methods and commensurate
line methods to the design of compact equalisers which allow an improved
transducer power gain over a wide band. It is shown that physically small
equalisers can yield an improvement of 4 dB over a 2 GHz bandwidth.
The second area considered is the distortion inherent in a laser diode.
Detailed measurements of the second order and intermodulation products
are given. A small signal perturbation analysis is presented which helps to
explain the observed distortion products. The results of numerical
simulation of the distortion using a state variable implementation of the full
rate equations and related first, second and intermodulation equations is
presented and possible methods of reducing the distortion are explored. It is
shown that in principle the distortion could be reduced by pre-generating
the distortion and adding an inverted form of the distortion to the
transmitted signal. The distortion can then be corrected in the fiber and
simulation studies suggest that an improvement of 13 dB optical or 26 dB
electrical may be possible.
| Identifer | oai:union.ndltd.org:ADTP/219141 |
| Date | January 1992 |
| Creators | O'Brien, Daniel Gerard, n/a |
| Publisher | University of Canberra. Information Sciences & Engineering |
| Source Sets | Australiasian Digital Theses Program |
| Language | English |
| Detected Language | English |
| Rights | ), Copyright Daniel Gerard O'Brien |
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