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On-chip optical filters with designable characteristics based on an interferometer with embedded silicon photonic structures
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Date
2012-02-15
Author
Kocaman, Serdar
Aras, Mehmet S.
Panoiu, Nicolae C.
Lu, Ming
Wong, Chee Wei
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This work is licensed under a
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
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We demonstrate chip-scale flat-top filters at near-IR wavelengths using negative index photonic crystal based MachZehnder 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.
Subject Keywords
Crystal wave-guides
,
Negative-ındex
,
Slow-light
,
Superlattices
,
Refraction
URI
https://hdl.handle.net/11511/47332
Journal
Optics Letters
DOI
https://doi.org/10.1364/ol.37.000665
Collections
Department of Electrical and Electronics Engineering, Article