Experimental designs for efficient free-space multi-spatial-mode optical communication
Name
865772133-MIT.pdf
Description
Full printable version
Size
10.86 MB
Format
Adobe PDF
Checksum (MD5)
92a368fc3d366e4443bdc47e46fcc945
Author(s)
Ng, Edwin, S.B. Massachusetts Institute of Technology
Advisor(s)
Franco N.C. Wong.
Date Issued
2013
Publisher
Massachusetts Institute of Technology
Abstract
In optical communications, two measures of efficiency are commonly at odds. The first is the photon information efficiency (in bits/photon) which measures the information that each detected photon conveys; the second is the spectral efficiency (in bits/s/Hz) which measures the bit rate achieved under limited bandwidth. One interesting communication protocol which can simultaneously obtain high information efficiency without sacrificing spectral efficiency, however, is spatial pulse-position- modulation (spatial-PPM), in which information is encoded into the spatial modes of light and sent through free space between transmitter and receiver. This thesis aims to lay the groundwork for an experimental design to achieve efficient spatial-PPM free-space optical communication using 1550 nm light at the single photon level. We focus on presenting and evaluating a transmitter-receiver design by giving a precise characterization of its operation, properties, and limitations.
Description
Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Physics, 2013.
Cataloged from PDF version of thesis.
Includes bibliographical references (page 77).
Subjects
Physics.
MIT Department
Massachusetts Institute of Technology. Department of Physics
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copyright. They may be viewed from this source for any purpose, but
reproduction or distribution in any format is prohibited without written
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