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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 40, Iss. 11 — Apr. 10, 2001
  • pp: 1843–1855

Scalability analysis of diffractive optical element-based free-space photonic circuits for interoptoelectronic chip interconnections

Hironori Sasaki, Kyoko Kotani, Hiroshi Wada, Takeshi Takamori, and Takashi Ushikubo  »View Author Affiliations


Applied Optics, Vol. 40, Issue 11, pp. 1843-1855 (2001)
http://dx.doi.org/10.1364/AO.40.001843


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Abstract

An interchip free-space optical interconnection module is investigated to solve the pin-input–output bottleneck at the interface of silicon integrated circuits. The scalability of the photonic circuit is theoretically analyzed by use of the minimum feature size requirement of each diffractive element used. The study showed that interconnection densities of 1000–2000 channels/cm is possible for a 40-mm interconnection length with a 3-mm-thick optical substrate. Diffraction-limited imaging capability has been demonstrated using a fabricated prototype, confirming its applicability for interchip free-space interconnections. Photonic circuit insertion losses of -23.4 dB for TE polarization and -25.9 dB for TM polarization as well as a polarization-dependent loss of 2.5 dB are found to be caused primarily by a pair of binary linear gratings used for beam deflections. Design modifications aiming at insertion loss reduction and further improvement of tolerance capabilities are also discussed.

© 2001 Optical Society of America

OCIS Codes
(050.1380) Diffraction and gratings : Binary optics
(050.1970) Diffraction and gratings : Diffractive optics
(130.0130) Integrated optics : Integrated optics
(130.0250) Integrated optics : Optoelectronics
(200.4650) Optics in computing : Optical interconnects
(220.4830) Optical design and fabrication : Systems design
(250.5300) Optoelectronics : Photonic integrated circuits

History
Original Manuscript: December 6, 1999
Revised Manuscript: October 16, 2000
Published: April 10, 2001

Citation
Hironori Sasaki, Kyoko Kotani, Hiroshi Wada, Takeshi Takamori, and Takashi Ushikubo, "Scalability analysis of diffractive optical element-based free-space photonic circuits for interoptoelectronic chip interconnections," Appl. Opt. 40, 1843-1855 (2001)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-40-11-1843

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