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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 45, Iss. 9 — Mar. 20, 2006
  • pp: 1993–2000

Dynamic optical coupled system employing even-numbered Dammann gratings

Caihui Di and Changhe Zhou  »View Author Affiliations


Applied Optics, Vol. 45, Issue 9, pp. 1993-2000 (2006)
http://dx.doi.org/10.1364/AO.45.001993


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Abstract

Dammann gratings are well known for their ability to generate arrays of uniform-intensity beams from an incoming monochromatic beam. We apply the even-numbered Dammann grating to achieve dynamic optical coupled technology. A 1 × N dynamic optical coupled system is developed by employing two complementary even-numbered Dammann gratings. With this system we can achieve a beam splitter and combiner as a switch between them according to the relative shift between the gratings. Also, this system is a preferable approach in integral packaging. More importantly, this device has the potential to be applied to the splitting of a large array, e.g., 8 × 16 array and 64 × 64 array, which is difficult to be realized with conventional splitting methods. We experimentally demonstrated a 1 × 8 coupler at the wavelength of 1550   nm . Furthermore we analyze the effects of the alignment errors between gratings and the wavelength-dependent error on efficiency and uniformity. The experimental results and the influence of alignment error and wavelength-dependent error are analyzed in detail.

© 2006 Optical Society of America

OCIS Codes
(050.1380) Diffraction and gratings : Binary optics
(060.1810) Fiber optics and optical communications : Buffers, couplers, routers, switches, and multiplexers
(230.1360) Optical devices : Beam splitters
(230.1950) Optical devices : Diffraction gratings

ToC Category:
Diffraction and Gratings

History
Original Manuscript: April 4, 2005
Revised Manuscript: October 19, 2005
Manuscript Accepted: November 5, 2005

Citation
Caihui Di and Changhe Zhou, "Dynamic optical coupled system employing even-numbered Dammann gratings," Appl. Opt. 45, 1993-2000 (2006)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-45-9-1993


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References

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