Narrow-Bandpass Filter Using Partitioned Cavities

W H Southwell; W J Gunning; R L Hall

doi:10.1117/12.939554

23 December 1986 Narrow-Bandpass Filter Using Partitioned Cavities

W H Southwell, W J Gunning, R L Hall

Proceedings Volume 0678, Optical Thin Films II: New Developments; (1986) https://doi.org/10.1117/12.939554
Event: 30th Annual Technical Symposium, 1986, San Diego, United States

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.

Citation Download Citation

W H Southwell, W J Gunning, and R L Hall "Narrow-Bandpass Filter Using Partitioned Cavities", Proc. SPIE 0678, Optical Thin Films II: New Developments, (23 December 1986); https://doi.org/10.1117/12.939554

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