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Applied Optics

Applied Optics


  • Vol. 33, Iss. 26 — Sep. 10, 1994
  • pp: 6168–6180

Guided-wave and free-space optical interconnects for parallel-processing systems: a comparison

Linda Jean Camp, Rohini Sharma, and Michael R. Feldman  »View Author Affiliations

Applied Optics, Vol. 33, Issue 26, pp. 6168-6180 (1994)

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Guided-wave and free-space optical interconnects are compared based on insertion loss, link efficiency, connection density, time delay, and power dissipation for three types of connection networks. Three types of free-space interconnect systems are analyzed that are representative of a wide variety of free-space systems: space-variant basis-set and space-invarient systems. Results indicate that the connection density of a space-variant free space system has a connection density roughly equivalent to a two level guided-wave system with a pitch of ~10 μm (for a 1-μm wavelength) and a core refractive index of 2.0. It is also shown that the connection density of basis-set and space-invariant free-space systems can be several orders of magnitude higher than fundamental limits on the connection density of dual-level guided-wave interconnect systems when large-scale highly connected networks are employed.

© 1994 Optical Society of America

Original Manuscript: October 15, 1993
Published: September 10, 1994

Linda Jean Camp, Rohini Sharma, and Michael R. Feldman, "Guided-wave and free-space optical interconnects for parallel-processing systems: a comparison," Appl. Opt. 33, 6168-6180 (1994)

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