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Proceedings Paper

Misalignment-tolerant packaging of optical-interconnection-based systems using multiple photodetectors
Author(s): Anjan K. Ghosh
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Paper Abstract

Alignment tolerance can be improved if instead of a large photodetector an array of several photodetectors is used to receive the power in each light beam used for interconnection. The design formulae for optically selecting the number of photodetectors, the center-to-center spacing between the photodetectors, and the radii of the photodetectors in a focal plane array are derived as a function of the spot sizes and diffraction patterns of the beams. Since photocurrents generated by several smaller photodiodes are summed together it is possible to enhance the signal to noise ratio without suffering a degradation in the overall bandwidth in the interconnect.

Paper Details

Date Published: 25 September 2001
PDF: 6 pages
Proc. SPIE 4417, Photonics 2000: International Conference on Fiber Optics and Photonics, (25 September 2001); doi: 10.1117/12.441294
Show Author Affiliations
Anjan K. Ghosh, Nanyang Technological Univ. (India)

Published in SPIE Proceedings Vol. 4417:
Photonics 2000: International Conference on Fiber Optics and Photonics
S. K. Lahiri; Ranjan Gangopadhyay; Asit K. Datta; Samit K. Ray; B. K. Mathur; S. Das, Editor(s)

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