Abstract

The information capacities of two-dimensional optical low-pass channels are discussed. Coherent and incoherent systems operating under finite optical power and area constraints are characterized in terms of two criteria:spacebandwidth product (SBP; the number of pixels required for achieving maximum information capacity) and resolution (G<sub>min</sub>; the smallest spot size capable of supporting positive capacity gain). A coherent system operating with an initial signal-to-noise ratio (SNR) of 5 can achieve a 48% capacity gain by operating at an optimal SBP that is 3.4 times that of the nominal system. The same system has a resolution that is 0.31 times nominal. Incoherent systems experience additional SNR loss, and with an initial SNR of 5 they achieve capacity gains of 29% at the optimal SBP of 2.8 times nominal. The incoherent system resolution is found to be 0.4 times nominal.

© 1998 Optical Society of America

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  2. A. J. den Dekker and A. van den Bos, J. Opt. Soc. Am. A 14, 547 (1997).
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1998

S. Benedetto, D. Divsalar, and J. Hagenauer, eds., special issue on concatenated coding techniques and iterative decoding, IEEE Trans. Sel. Areas Commun. 16(2) (1998).

1997

1996

J. W. Goodman, Introduction to Fourier Optics (McGraw-Hill, New York, 1996), Chap. 2, p. 27.

1991

T. M. Cover and J. A. Thomas, Elements of Information Theory (Wiley, New York, 1991), Chap. 8, pp. 183224.

1961

Cover, T. M.

T. M. Cover and J. A. Thomas, Elements of Information Theory (Wiley, New York, 1991), Chap. 8, pp. 183224.

den Dekker, A. J.

Frieden, B. R.

B. R. Frieden, in Picture Processing and Digital Filtering, T. S. Huang, ed., Vol. 6 of Topics in Applied Physics (Springer-Verlag, New York, 1975), pp. 177248.

Goodman, J. W.

J. W. Goodman, Introduction to Fourier Optics (McGraw-Hill, New York, 1996), Chap. 2, p. 27.

Ronchi, V.

Thomas, J. A.

T. M. Cover and J. A. Thomas, Elements of Information Theory (Wiley, New York, 1991), Chap. 8, pp. 183224.

van den Bos, A.

IEEE Trans. Sel. Areas Commun.

S. Benedetto, D. Divsalar, and J. Hagenauer, eds., special issue on concatenated coding techniques and iterative decoding, IEEE Trans. Sel. Areas Commun. 16(2) (1998).

J. Opt. Soc. Am.

J. Opt. Soc. Am. A

Topics in Applied Physics

B. R. Frieden, in Picture Processing and Digital Filtering, T. S. Huang, ed., Vol. 6 of Topics in Applied Physics (Springer-Verlag, New York, 1975), pp. 177248.

Other

J. W. Goodman, Introduction to Fourier Optics (McGraw-Hill, New York, 1996), Chap. 2, p. 27.

T. M. Cover and J. A. Thomas, Elements of Information Theory (Wiley, New York, 1991), Chap. 8, pp. 183224.

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