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On-chip optical filters with designable characteristics based on an interferometer with embedded silicon photonic structures.

Kocaman, S; Aras, MS; Panoiu, NC; Lu, M; Wong, CW; (2012) On-chip optical filters with designable characteristics based on an interferometer with embedded silicon photonic structures. Opt Lett , 37 (4) 665 - 667.

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Abstract

We demonstrate chip-scale flat-top filters at near-IR wavelengths using negative index photonic crystal based Mach-Zehnder interferometers. Supported by full three-dimensional numerical simulations, we experimentally demonstrate a new approach for engineering high-pass, low-pass, bandpass, and band-reject filters, based on designing the photonic band diagram both within the bandgap frequency region and away from it. We further show that our approach can be used to design filters that have tunable multilevel response for different sections of the spectrum and for different polarizations. This configuration enables deterministic control of the bandwidth and the rejection ratio of filters for integrated photonic circuits.

Type: Article
Title: On-chip optical filters with designable characteristics based on an interferometer with embedded silicon photonic structures.
Location: United States
Language: English
UCL classification: UCL > School of BEAMS > Faculty of Engineering Science > Electronic and Electrical Engineering
URI: http://discovery.ucl.ac.uk/id/eprint/1348671
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