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Journal of the Optical Society of America A

Journal of the Optical Society of America A


  • Vol. 13, Iss. 7 — Jul. 1, 1996
  • pp: 1422–1428

Complex-amplitude modulation by high-carrier-frequency diffractive elements

Eero Noponen and Jari Turunen  »View Author Affiliations

JOSA A, Vol. 13, Issue 7, pp. 1422-1428 (1996)

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Complex-amplitude modulation is necessary if we wish to suppress the noise that surrounds the signal in diffractive optics. This is desirable in, e.g., space-invariant optical interconnection. We present a mathematical scheme to synthesize high-carrier-frequency diffractive elements that perform phase and amplitude modulation of the first carrier-grating order without the use of absorption. The amplitude information is encoded in grating-depth variations and in the phase information in pulse-position modulation. Use of rigorous diffraction theory in the design of the local grating structure ensures virtually noise-free reconstruction with efficiencies that are significantly higher than the values one typically obtains, e.g., by conventional holographic recording.

© 1996 Optical Society of America

Original Manuscript: July 17, 1995
Revised Manuscript: January 23, 1996
Manuscript Accepted: January 29, 1996
Published: July 1, 1996

Eero Noponen and Jari Turunen, "Complex-amplitude modulation by high-carrier-frequency diffractive elements," J. Opt. Soc. Am. A 13, 1422-1428 (1996)

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