Optical coupling between a self-assembled microsphere grating and a rib waveguide
Tai, Chao-Yi, Unal, Bayram, Wilkinson, James S., Ghanem, Mohamed A. and Bartlett, Philip N. (2004) Optical coupling between a self-assembled microsphere grating and a rib waveguide. Applied Physics Letters, 84, (18), 3513-3515. (doi:10.1063/1.1739275).
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We report the fabrication of a linear array of self-assembled polystyrene microspheres side-coupled to a rib waveguide. The optical coupling between the lateral evanescent field and the periodically perturbed effective refractive index alongside the waveguide results in a transmission stopband at the Bragg wavelength.
The observed transmission spectrum shows a notch centered at λ = 1590nm, which is in close agreement with theory. The coupling coefficient, κ, and the spectral response are derived for variable cladding medium index using perturbation theory. Structures of this type are expected to find application in wavelength selection, optical sensing, and optical delays.
|Additional Information:||Publication No: 2862|
|Subjects:||T Technology > TK Electrical engineering. Electronics Nuclear engineering
Q Science > QC Physics
|Divisions:||University Structure - Pre August 2011 > Optoelectronics Research Centre
University Structure - Pre August 2011 > School of Chemistry
|Date Deposited:||11 May 2006|
|Last Modified:||27 Mar 2014 18:18|
|RDF:||RDF+N-Triples, RDF+N3, RDF+XML, Browse.|
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