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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 38, Iss. 11 — Apr. 10, 1999
  • pp: 2282–2290

Tolerance of optical interconnections to misalignment

David T. Neilson  »View Author Affiliations


Applied Optics, Vol. 38, Issue 11, pp. 2282-2290 (1999)
http://dx.doi.org/10.1364/AO.38.002282


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Abstract

The fundamental reasons that determine the tolerance of free-space optical interconnect systems to misalignment are considered. By evaluation of the overlap of single-mode optical beams in the presence of misalignment it possible to determine an optimum beam configuration. It is shown that for any level of misalignment there is an optimum beam diameter that maximizes the coupling of light through the system. Many interconnect systems are not single mode throughout, so the analysis is extended to cover multimode systems. It is shown that, in principle, any level of misalignment can be accommodated by use of multimode beams, although at the cost of reduced channel density. It is shown that the presence of misalignment will mean that the number of channels that can be supported by an interconnect reduces with the length of the interconnect. As possible candidates for passively aligned systems, three example optical systems are analyzed by use of the methods developed.

© 1999 Optical Society of America

OCIS Codes
(060.4250) Fiber optics and optical communications : Networks
(060.4510) Fiber optics and optical communications : Optical communications
(200.2610) Optics in computing : Free-space digital optics
(200.4650) Optics in computing : Optical interconnects
(220.1140) Optical design and fabrication : Alignment

History
Original Manuscript: August 31, 1998
Revised Manuscript: December 14, 1998
Published: April 10, 1999

Citation
David T. Neilson, "Tolerance of optical interconnections to misalignment," Appl. Opt. 38, 2282-2290 (1999)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-38-11-2282

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