Polarization properties of two-dimensional slot waveguides
Applied Optics, Vol. 49, Issue 28, pp. 5321-5332 (2010)
http://dx.doi.org/10.1364/AO.49.005321
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Abstract
We propose and study slot waveguide geometries where both quasi-TE and quasi-TM modes may propagate highly confined within the same low-index slot region. Conventional horizontal and vertical slot waveguides can only provide high slot confinement for either the quasi-TM or quasi-TE modes, respectively. Different two-dimensional slot waveguide structures are analyzed in terms of their mode characteristics, such as the effective index, the confinement factor, and the overlap of quasi-TE and -TM modes within the slot. Attention is also paid to practical manufacturability. Various waveguide structures can be tailored to have zero birefringence or equal confinement at both polarizations. Values for the confinement factors and the overlap of the two polarizations, in the slot region, can reach 0.4 to 0.5.
© 2010 Optical Society of America
OCIS Codes
(130.2790) Integrated optics : Guided waves
(220.0220) Optical design and fabrication : Optical design and fabrication
(230.0230) Optical devices : Optical devices
(230.2240) Optical devices : Faraday effect
(230.7370) Optical devices : Waveguides
ToC Category:
Integrated Optics
History
Original Manuscript: May 18, 2010
Revised Manuscript: August 23, 2010
Manuscript Accepted: August 27, 2010
Published: September 24, 2010
Citation
Amit Khanna, Antti Säynätjoki, Ari Tervonen, Robert A. Norwood, and Seppo Honkanen, "Polarization properties of two-dimensional slot waveguides," Appl. Opt. 49, 5321-5332 (2010)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-49-28-5321
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