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Optics Letters

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  • Vol. 21, Iss. 18 — Sep. 15, 1996
  • pp: 1508–1510

Analysis of gratings with large periods and small feature sizes by stitching of the electromagnetic field

Ben Layet and Mohammad R. Taghizadeh  »View Author Affiliations


Optics Letters, Vol. 21, Issue 18, pp. 1508-1510 (1996)
http://dx.doi.org/10.1364/OL.21.001508


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Abstract

We present a new method for the analysis of diffractive optical elements, which we refer to as field stitching. It is suitable for use with grating structures of arbitrarily large period, even when the local feature size is of the order of a wavelength. Furthermore, the concept is straightforwardly extendable to aperiodic structures. To assess its applicability, we have calculated the diffracted orders from a 1 × 81 fan-out grating with periods of 100λ and 10, 000λ. The field-stitched calculations agree very well with independent rigorous predictions for the small-period element and scalar-regime predictions for the large-period element. We believe that a variety of areas within the diffractive-optics field will benefit from this new analytical tool. It promises accurate analysis and, by facilitating component optimization, high-performance designs.

© 1996 Optical Society of America

History
Original Manuscript: February 12, 1996
Published: September 15, 1996

Citation
Ben Layet and Mohammad R. Taghizadeh, "Analysis of gratings with large periods and small feature sizes by stitching of the electromagnetic field," Opt. Lett. 21, 1508-1510 (1996)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-21-18-1508


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References

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