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Applied Optics

Applied 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)

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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

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

David T. Neilson, "Tolerance of optical interconnections to misalignment," Appl. Opt. 38, 2282-2290 (1999)

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  1. F. A. P. Tooley, A. Z. Shang, B. Robertson, “Alignment tolerant smart pixels,” in Advanced Applications of Lasers in Materials Processing/Broadband Optical Networks/Enabling Technologies and Applications/Smart Pixels/Optical MEM’s and Their Applications: IEEE/LEOS 1996 Summer Topical Meetings (catalog no. 96TH8164) (Institute of Electrical and Electronics Engineers, New York, 1996), pp. 55–56.
  2. G. C. Boisset, B. Robertson, H. S. Hinton, “Design and construction of an active alignment demonstrator for a free-space optical interconnect,” IEEE Photon. Technol. Lett. 7, 676–678 (1995). [CrossRef]
  3. B. Robertson, “Design of a compact alignment tolerant optical interconnect for photonic backplane applications,” in Proceedings of the Fourth International Conference on Massively Parallel Processing Using Optical Interconnections (catalog no. 97TB100152), J. Goodman, S. Hinton, T. Pinkston, E. Schenfeld, eds. (Institute of Electrical and Electronics Engineers, New York, 1997), pp. 68–77. [CrossRef]
  4. S. Patra, M. Jian, V. Ozguz, S. H. Lee, “Alignment issues in packaging for free-space optical interconnects,” Opt. Eng. 33, 1561–1570 (1994). [CrossRef]
  5. D. Zaleta, S. Patra, V. Ozguz, M. Jian, S. H. Lee, “Tolerancing of board-level free-space optical interconnects,” Appl. Opt. 35, 1317–1327 (1996). [CrossRef] [PubMed]
  6. D. A. B. Miller, “Physical reasons for optical interconnection,” Int. J. Optoelectron. 11, 155–168 (1997).
  7. H. Kogelnick, “Coupling and conversion coefficients for optical modes,” in Proceedings of the Symposium on Quasi-Optics, J. Fox, ed. (Polytechnic, Brooklyn, N.Y., 1964), Vol. 14, pp. 333–347.
  8. W. Smith, “Optics in practice,” in Modern Optical Engineering: the Design of Optical Systems, 2nd ed. (McGraw-Hill, New York, 1990), pp. 482–484.
  9. H. M. Presby, N. Amitay, R. Scotti, A. F. Benner, “Laser-to-fiber coupling via optical fiber up-tapers,” J. Lightwave Technol. 7, 274–278 (1989). [CrossRef]
  10. A. E. Siegman, “Output beam propagation and beam quality from a multimode stable-cavity laser,” IEEE J. Quantum Electron. 29, 1212–1217 (1993). [CrossRef]
  11. A. L. Lentine, K. W. Goossen, J. A. Walker, J. E. Cunningham, W. Y. Jan, T. K. Woodward, A. V. Krishnamoorthy, S. P. Hui, B. T. Tseng, R. E. Leibenguth, L. M. F. Chirovsky, R. A. Novotny, B. Bucholz, R. L. Morrison, “Optoelectronic VLSI switching chip with greater than 1 terabit per second potential I/O bandwidth,” Electron. Lett. 33, 894–895 (1997). [CrossRef]
  12. A. V. Krishnamoorthy, D. A. B. Miller, “Scaling optoelectronic-VLSI circuits into the 21 st century: a technology roadmap,” IEEE J. Select. Topics Quantum Electron. 2, 55–76 (1996). [CrossRef]
  13. D. A. B. Miller, H. M. Ozaktas, “Limit to the bit-rate capacity of electrical interconnects from the aspect ratio of the system architecture,” J. Parallel Distribut. Comput. 41, 42–52 (1997). [CrossRef]
  14. J. Jahns, “Planar packaging of free–space optical interconnections,” Proc. IEEE 82, 1623–1631 (1994). [CrossRef]
  15. J. M. Sasian, F. B. McCormick, R. Webb, R. J. Crisci, K. O. Mersereau, R. P. Stawicki, “Design, assembly, and testing of an objective lens for a free-space photonic switching system,” Opt. Eng. 32, 1871–1878 (1993). [CrossRef]
  16. C. P. Barrett, P. Blair, G. S. Buller, D. T. Neilson, B. Robertson, E. C. Smith, M. R. Taghizadeh, A. C. Walker, “Components for implementation of free-space optical crossbars,” Appl. Opt. 35, 6934–6944 (1996). [CrossRef] [PubMed]
  17. D. J. Reiley, J. M. Sasian, “Optical design of a free-space photonics switching system,” Appl. Opt. 35, 6934–6944 (1996).
  18. D. T. Neilson, S. M. Prince, D. A. Baillie, F. A. P. Tooley, “Optical design of a 1024-channel free-space sorting demonstrator,” Appl. Opt. 36, 9243–9252 (1997). [CrossRef]
  19. D. J. Goodwill, H. S. Hinton, “Optical interconnect module extensible to 10,000 parallel channels for a smart-pixel optical backplane,” in Advanced Applications of Lasers in Materials Processing/Broadband Optical Networks/Enabling Technologies and Applications/Smart Pixels/Optical MEM’s and Their Applications: IEEE/LEOS 1996 Summer Topical Meetings (catalog no. 96TH8164) (Institute of Electrical and Electronics Engineers, New York, 1996), pp. 61–62.

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