Design of Single Cavity Band Pass Graded Index Optical Filter with Quintic Apodization

A single cavity graded index optical filter is designed by super-imposing of two sine wave refractive index profiles for a design wavelength of 0.55 µm. A suitable number of matching layers, generated using quintic function, were added to the super-imposed sinusoidal refractive index profile to achi...

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Bibliographic Details
Main Authors: SRS Praveen Kumar, Vemuri, Sunita, Parinam, kumar, Mukesh, kumari, Neelam, Karar, Vinod, Sharma, Amit L
Format: Conference Proceeding
Language:English
Subjects:
Optical coatings
Rugate filter
Superimposing
Thin films
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Summary:A single cavity graded index optical filter is designed by super-imposing of two sine wave refractive index profiles for a design wavelength of 0.55 µm. A suitable number of matching layers, generated using quintic function, were added to the super-imposed sinusoidal refractive index profile to achieve ∼96% transmittance cavity filter at normal incidence. The design was simulated for two different substrates with refractive indices of 1.52 and 2 respectively and simulated transmittance spectra for both the designs were compared. Simulated results show that the design with substrate refractive index 1.52 shows better transmittance performance.
ISSN:2214-7853
2214-7853
DOI:10.1016/j.matpr.2017.11.628