Prajit Dhara, Babak N Saif, Jeffrey H Shapiro, Saikat Guha
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引用次数: 0
Abstract
Slepian developed the prolate spheroidal wavefunction (PSW) spatial-mode basis, which forms the normal modes of the Fresnel-propagation kernel of a free-space optical communications channel bookended by hard-circular apertures. The zero-th-order PSW mode exhibits the highest power-transfer eigenvalue, thereby maximizing transmissivity for single-spatial-mode communications [Bell Syst. Tech. J.43, 3009 (1964)BSTJAN0005-858010.1002/j.1538-7305.1964.tb01037.x, J. Opt. Soc. Am.55, 1110 (1965)10.1364/JOSA.55.001110]. We show that the transmissivity performance of this fundamental PSW mode can be obtained by an aperture-truncated Gaussian beam of an optimized beam waist, despite the two mode shapes deviating from one another in the near-field regime.
期刊介绍：
The Journal of the Optical Society of America A (JOSA A) is devoted to developments in any field of classical optics, image science, and vision. JOSA A includes original peer-reviewed papers on such topics as:
* Atmospheric optics
* Clinical vision
* Coherence and Statistical Optics
* Color
* Diffraction and gratings
* Image processing
* Machine vision
* Physiological optics
* Polarization
* Scattering
* Signal processing
* Thin films
* Visual optics
Also: j opt soc am a.
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