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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Original Publication URL: http://dx.doi.org/10.1063/1.1739275


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 lambda = 1590nm, which is in close agreement with theory. The coupling coefficient, K, 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.

Item Type: Article
Digital Object Identifier (DOI): doi:10.1063/1.1739275
ISSNs: 0003-6951 (print)
Related URLs:
Subjects: Q Science > QC Physics
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions : University Structure - Pre August 2011 > Optoelectronics Research Centre
University Structure - Pre August 2011 > School of Chemistry
ePrint ID: 30225
Accepted Date and Publication Date:
Date Deposited: 11 May 2006
Last Modified: 30 Jan 2017 15:29
URI: http://eprints.soton.ac.uk/id/eprint/30225

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