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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 44, Iss. 21 — Jul. 20, 2005
  • pp: 4447–4453

Angular sensitivities of volume gratings for substrate-mode optical interconnects

Shun-Der Wu, Thomas K. Gaylord, Elias N. Glytsis, and Yu-Ming Wu  »View Author Affiliations


Applied Optics, Vol. 44, Issue 21, pp. 4447-4453 (2005)
http://dx.doi.org/10.1364/AO.44.004447


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Abstract

The angular sensitivities of slanted volume gratings (VGs) illuminated by three-dimensional (3-D) converging–diverging spherical Gaussian beams for substrate-mode optical interconnects in microelectronics are analyzed by application of 3-D finite-beam rigorous coupled-wave analysis. Angular misalignments about the z, y, and x axes that correspond to yaw, pitch, and roll misalignments resulting from manufacturing tolerances of chips are investigated. Two cases of linear polarization of the central beam of the Gaussian are considered: EK and HK, where K is the grating vector. From worst-case manufacturing tolerances, the ranges of yaw, pitch, and roll misalignment angles are α = ±1.17°, β = ±3.04°, and γ = ±3.04°, respectively. Based on these ranges of misalignment angles, the decreases of diffraction efficiencies for slanted VGs that are due to both the yaw and the roll misalignments are relatively small. However, the efficiency of substrate-mode optical interconnects achieved by slanted VGs could be reduced by 61.04% for EK polarization and by 58.63% for HK polarization because of the pitch misalignment. Thus the performance of a VG optical interconnect is most sensitive to pitch misalignment.

© 2005 Optical Society of America

OCIS Codes
(050.0050) Diffraction and gratings : Diffraction and gratings
(050.1950) Diffraction and gratings : Diffraction gratings
(050.1960) Diffraction and gratings : Diffraction theory
(050.7330) Diffraction and gratings : Volume gratings
(260.2110) Physical optics : Electromagnetic optics

History
Original Manuscript: November 19, 2004
Revised Manuscript: February 16, 2005
Manuscript Accepted: February 23, 2005
Published: July 20, 2005

Citation
Shun-Der Wu, Thomas K. Gaylord, Elias N. Glytsis, and Yu-Ming Wu, "Angular sensitivities of volume gratings for substrate-mode optical interconnects," Appl. Opt. 44, 4447-4453 (2005)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-44-21-4447

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