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Applied Optics

Applied Optics


  • Vol. 39, Iss. 11 — Apr. 10, 2000
  • pp: 1761–1775

Bandwidth optimization of optical data links by use of error-control codes

Ted H. Szymanski  »View Author Affiliations

Applied Optics, Vol. 39, Issue 11, pp. 1761-1775 (2000)

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A design approach to optimizing the bandwidth of optical data links while simultaneously decreasing the bit-error rate is proposed. Mathematical analysis indicates that bandwidth gains by factors of 10–60 with power gains of as much as 8.9 dB are possible. To achieve these performance levels requires several innovations. First, conventional forward error-correcting codes cannot be used because of their excessive hardware cost. A reasonably powerful multidimensional parity-based error-control code is proposed and analyzed. These codes offer excellent error detection and moderate error-correction capabilities. Most importantly, they can operate at the fast clock rates that are required. Second, a hybrid automatic-repeat-request protocol is exploited to correct complex error patterns. In thermal-noise-limited systems this unique combination allows the optical clock rate to be increased significantly, thereby resulting in large bandwidth increases. The proposed design approach can be used in optical data links in which propagation delays are moderate and is applicable to fibers that exploit wavelength-division multiplexing or time-division multiplexing, one-dimensional parallel-fiber ribbons, and two-dimensional optical data links that use free space or guided waves. Several design examples are illustrated.

© 2000 Optical Society of America

OCIS Codes
(060.2360) Fiber optics and optical communications : Fiber optics links and subsystems
(060.4510) Fiber optics and optical communications : Optical communications
(200.3760) Optics in computing : Logic-based optical processing
(200.4650) Optics in computing : Optical interconnects
(250.3140) Optoelectronics : Integrated optoelectronic circuits

Original Manuscript: June 23, 1999
Revised Manuscript: December 16, 1999
Published: April 10, 2000

Ted H. Szymanski, "Bandwidth optimization of optical data links by use of error-control codes," Appl. Opt. 39, 1761-1775 (2000)

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