Optical Squeezing of Light in Photonic Crystal Fibres

Tacey, Morgan (2013). Optical Squeezing of Light in Photonic Crystal Fibres MPhil Thesis, School of Mathematics and Physics, The University of Queensland. doi:10.14264/uql.2014.262

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Author Tacey, Morgan
Thesis Title Optical Squeezing of Light in Photonic Crystal Fibres
School, Centre or Institute School of Mathematics and Physics
Institution The University of Queensland
DOI 10.14264/uql.2014.262
Publication date 2013-01-01
Thesis type MPhil Thesis
Supervisor Joel Corney
Murray Olsen
Total pages 129
Language eng
Subjects 020604 Quantum Optics
Formatted abstract
This thesis presents a comprehensive numerical investigation of polarisation squeezing in photonic crystal fibre. Squeezing is the reduction of quantum noise in one variable beyond the Heisenberg limit at the expense of increased noise in the conjugate. The greater confinement of light that is possible in photonic crystal fibres leads to a greater effective nonlinearity, which promises to yield greater quantum squeezing than is possible in standard optical fibre. There are two dominant noise sources that limit the degree of polarisation squeezing. Raman noise is the interaction of photons with phonons in the fibre medium the degree of which is characteristic of the fibre medium and scales inversely with pulse width. And guided acoustic wave Brillouin scattering is due to thermally excited mechanical eigenmodes which scales with fibre length. The larger nonlinearity of photonic crystal fibres allows shorter fibre lengths with larger pulse widths providing a means to significantly reduce the dominant noise sources and obtain polarisation squeezing beyond that of ordinary silica fibre.

This thesis presents an extensive quantum treatment using the truncated Wigner method that includes loss, a non-instantaneous Raman response, excess phase-noise, second- and third- order dispersion and self-steepening to identify the physical factors that limit current photonic crystal fibre squeezing experiments and demonstrate the optimal parameters to obtain the best squeezing.
Keyword Quantum mechanics
Quantum optics
Fibre optics
Photonic crystal fibre
Raman effect
Kerr effect
Guided acoustic wave Brillouin scattering
Polarisation squeezing

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Created: Mon, 18 Aug 2014, 23:50:35 EST by Morgan Tacey on behalf of Scholarly Communication and Digitisation Service