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Applied Optics

Applied Optics


  • Vol. 43, Iss. 17 — Jun. 10, 2004
  • pp: 3480–3488

Performance analysis of a multimode waveguide-based optical disk readout system

Frederik Fransoo, Dries Van Thourhout, and Roel Baets  »View Author Affiliations

Applied Optics, Vol. 43, Issue 17, pp. 3480-3488 (2004)

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We propose a method to improve the optical resolution to read out optical disks, without making the spot size on the disk smaller than the diffraction limit. The idea is to reconstruct the bit pattern from the complete field profile (including amplitude and phase) of the light reflected from the disk. We measure the phase and amplitude information by picking up the wave front into different modes of a bimodal waveguide. Once picked up, these modes can be split by a photonic integrated circuit to be measured by separate detectors. By combining the information from the responses from the different modes, we can improve the bit error rate substantially.

© 2004 Optical Society of America

OCIS Codes
(100.5010) Image processing : Pattern recognition
(100.5070) Image processing : Phase retrieval
(110.0110) Imaging systems : Imaging systems
(210.0210) Optical data storage : Optical data storage

Original Manuscript: November 14, 2003
Revised Manuscript: March 12, 2004
Published: June 10, 2004

Frederik Fransoo, Dries Van Thourhout, and Roel Baets, "Performance analysis of a multimode waveguide-based optical disk readout system," Appl. Opt. 43, 3480-3488 (2004)

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