Evaluation of a potential Wave Division Multiplexer (WDM) for use in the IRSTD

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Authors
Fernan, Paul Thomas
Subjects
Advisors
Cleary, David D.
Date of Issue
1989-12
Date
December 1989
Publisher
Monterey, California. Naval Postgraduate School
Language
en_US
Abstract
The design of a Wave Division Multiplexer (WDM) was evaluated. This design could be used in the AN/SAR-8 infrared search and target designation system currently being developed by the Navy. This design featured a spherical grating with a radius of curvature of 115 mm to test the capability of multiplexing 180 channels The grating was able to couple light from laser diodes at four different wave lengths (780.0nm, 789.0nm, 848.0nm, and 849.0nm). The most significant factor in coupling efficiency was astigmatism. This decreased the coupling efficiency by a factor of 500. The source linewidths were measured to assess the possibility of wavelength slicing. The capability to multiplex 180 channels is possible but cannot yet be achieved due to the lack of light sources that cover the wave length range required for a 180 channel system.
Type
Thesis
Description
Series/Report No
Department
Physics
Organization
Naval Postgraduate School (U.S.)
Identifiers
NPS Report Number
Sponsors
Funder
Format
54 p.
Citation
Distribution Statement
Approved for public release; distribution is unlimited.
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