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Highly angle tolerant filter incorporating serially cascaded a-Si based etalons and its application to a compact receiver

Noh, Tae-Hui; Yoon, Yeo-Taek; Lee, Hong-Shik; Lee, Sang-Shin; Choi, Duk-Yong


A highly angle tolerant spectral filter has been implemented taking advantage of three-stage serially concatenated resonators in dielectric films, each of which involves a high-index cavity in a-Si, sandwiched with a pair of SiO₂ films. For the constituent etalons, the free spectral range is individually adjusted by differentiating the thickness of the cavity, so that a primary infrared pass-band could be attained to present enhanced roll-off characteristics in conjunction with an appropriate...[Show more]

CollectionsANU Research Publications
Date published: 2013
Type: Journal article
Source: Optics Express
DOI: 10.1364/OE.21.001301


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