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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 37, Iss. 33 — Nov. 20, 1998
  • pp: 7698–7707

Optimization of the parallelogrammic grating diffraction efficiency for normally incident waves

Chi-keung Kwan and Geoff W. Taylor  »View Author Affiliations


Applied Optics, Vol. 37, Issue 33, pp. 7698-7707 (1998)
http://dx.doi.org/10.1364/AO.37.007698


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Abstract

The diffraction directivity of parallelogrammic gratings with second-order pitch is examined for a plane wave normally incident upon a corrugated waveguide structure. The three diffracted components are assumed to be in the form of guided waves, which permits a self-consistent calculation. The efficiencies of diffraction into the horizontal components are obtained. Also, the dependence of efficiency on grating thickness, waveguide thickness, grating pitch, and angle of inclination is determined. The approach provides a useful simulation tool for optimizing the design parameters for waveguide couplers with an orthogonal source.

© 1998 Optical Society of America

OCIS Codes
(000.4430) General : Numerical approximation and analysis
(050.0050) Diffraction and gratings : Diffraction and gratings
(050.1950) Diffraction and gratings : Diffraction gratings
(230.7370) Optical devices : Waveguides
(350.2770) Other areas of optics : Gratings

History
Original Manuscript: January 5, 1998
Revised Manuscript: May 6, 1998
Published: November 20, 1998

Citation
Chi-keung Kwan and Geoff W. Taylor, "Optimization of the parallelogrammic grating diffraction efficiency for normally incident waves," Appl. Opt. 37, 7698-7707 (1998)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-37-33-7698


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References

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  2. G. W. Taylor, C. Kwan, “Diffraction into a corrugated waveguide from normally incident radiation,” IEEE J. Lightwave Technol. (to be published).
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  4. I. I. Mokhun’, M. O. Sopin, “Geometric-optical approach to the problem of excitation of a corrugated optical waveguide at near-normal angles of incidence,” Quantum Electron. 26, 836–838 (1996). [CrossRef]
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  9. W.-H. Lee, W. Streifer, “Radiation loss calculations for corrugated dielectric waveguides. II. TM polarization,” J. Opt. Soc. Am. 69, 1671–1676 (1979). [CrossRef]

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