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Proceedings Paper

Narrow-Bandpass Filter Using Partitioned Cavities
Author(s): W H Southwell; W J Gunning; R L Hall
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Paper Abstract

Numerical optimization studies have led to a new multilayer design for a narrow bandpass filter. Its unique feature is the absence of traditional spacer layers. Electric field intensity profiles indicate that it is similar to a double cavity but the spacer layers are defined by pairs of low- and high-index layers forming partitioned cavities. Other partitionings have been studied. It is shown that the partitioning configuration can control somewhat the electric field intensity profile, which should lead to higher transmission. Another advantage of partitioned cavity filters is that they are less sensitive to random thickness errors in fabrication and are amenable to an error compensation scheme. Some filters were fabricated using ellipsometric monitoring with error compensation including one which achieved 83% peak transmission and about 1% bandwidth.

Paper Details

Date Published: 23 December 1986
PDF: 8 pages
Proc. SPIE 0678, Optical Thin Films II: New Developments, (23 December 1986); doi: 10.1117/12.939554
Show Author Affiliations
W H Southwell, Rockwell International Science Center (United States)
W J Gunning, Rockwell International Science Center (United States)
R L Hall, Rockwell International Science Center (United States)

Published in SPIE Proceedings Vol. 0678:
Optical Thin Films II: New Developments
Richard Ian Seddon, Editor(s)

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