Transmission of PhC coupled-resonator waveguide (PhCCRW) structure enhanced via mode matching

Transmission of PhC coupled-resonator waveguide (PhCCRW) structure enhanced via mode matching

A method for increasing the coupling efficiency between ridge optical waveguides and PhCCRWs is described. This increase is achieved via W1 channel waveguide sections, formed within a two-dimensional triangular lattice photonic crystal using mode-matching. The mode-matching is achieved by low qualit...

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Bibliographic Details
Main Authors: Jin, C. (Author), Johnson, N.P (Author), Chong, H.M.H (Author), Jugessar, A.S (Author), Day, S. (Author), Gallagher, D. (Author), De La Rue, R.M (Author)
Format: Article
Language:English
Published: 2005-04-04.
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Summary:A method for increasing the coupling efficiency between ridge optical waveguides and PhCCRWs is described. This increase is achieved via W1 channel waveguide sections, formed within a two-dimensional triangular lattice photonic crystal using mode-matching. The mode-matching is achieved by low quality-factor modified cavities added to both the input and output ports of the PhCCRW. A three dimensional finite-difference time-domain method has been used to simulate light propagation through the modified PhCCRW. We have fabricated PhCCRWs working at 1.5µm in silicon-on-insulator material. Measurements and simulations show that the overall transmission is improved by a factor of two.

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