In:
Advances in Optical Technologies, Hindawi Limited, Vol. 2008 ( 2008-07-13), p. 1-8
Abstract:
First implementations of subwavelength gratings (SWGs) in silicon-on-insulator (SOI) waveguides are discussed and demonstrated by experiment and simulations. The subwavelength effect is exploited for making antireflective and highly reflective waveguide facets as well as efficient fiber-chip coupling structures. We demonstrate experimentally that by etching triangular SWGs into SOI waveguide facets, the facet power reflectivity can be reduced from 31% to 〈 2.5%. Similar structures using square gratings can also be used to achieve high facet reflectivity. Finite
difference time-domain simulations show that 〉 94% facet reflectivity can be achieved with square SWGs for 5 μ m thick SOI waveguides. Finally, SWG fiber-chip couplers for SOI photonic wire waveguides are introduced, including design,
simulation, and first experimental results.
Type of Medium:
Online Resource
ISSN:
1687-6393
,
1687-6407
Language:
English
Publisher:
Hindawi Limited
Publication Date:
2008
detail.hit.zdb_id:
2434378-X
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