Binary subwavelength grating with dynamic subperiod

Zhiping James Zhou

doi:10.1117/12.221251

22 September 1995 Binary subwavelength grating with dynamic subperiod

Zhiping James Zhou

Proceedings Volume 2532, Application and Theory of Periodic Structures; (1995) https://doi.org/10.1117/12.221251
Event: SPIE's 1995 International Symposium on Optical Science, Engineering, and Instrumentation, 1995, San Diego, CA, United States

Abstract

The discussion on binary subwavelength gratings has recently been increased due to its simple fabrication procedure and potential applications in a variety of optoelectronic fields. Most designs of binary subwavelength gratings have been confined in the way that the grating ridges and/or channels are chirped and the defined grating period does not change during the design process. For some applications (e.g. interconnections), however, a dynamic diffraction pattern may be more desirable. In these cases, the variation of the diffraction angle and/or multiple diffraction beam pattern may be required. Therefor the rearrangement of the grating ridges and/or channels becomes a necessary. The newly arranged profile of the grating ridges and/or channels may be total different from the original one and may need to be changed into another profile later. This paper proposes a design method which optimize the diffraction efficiency at a desired angle and/or optimize the diffraction efficiencies at a multiangle pattern by forming a dynamic 'subperiod' within the initial defined grating period. Some design examples have been provided to prove the design concept.

Citation Download Citation

Zhiping James Zhou "Binary subwavelength grating with dynamic subperiod", Proc. SPIE 2532, Application and Theory of Periodic Structures, (22 September 1995); https://doi.org/10.1117/12.221251

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KEYWORDS

Diffraction gratings

Diffraction

Binary data

Optical components

Optical design

Very large scale integration

Superposition

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