Dieses Dokument steht unter einer CreativeCommons Lizenz by/4.0
Verlagslink DOI: 10.1063/1.5001486
Titel: Integrating cell on chip : novel waveguide platform employing ultra-long optical paths
Sprache: English
Autor/Autorin: Fohrmann, Lena Simone 
Sommer, Gerrit 
Pitruzzello, Giampaolo 
Krauss, Thomas F. 
Petrov, Alexander 
Eich, Manfred 
Erscheinungsdatum: 2017
Verlag: AIP Publishing
Quellenangabe: APL Photonics 9 (2): 096102- (2017)
Zeitschrift oder Schriftenreihe: APL photonics 
Zusammenfassung (englisch): Optical waveguides are the most fundamental building blocks of integrated optical circuits. They are extremely well understood, yet there is still room for surprises. Here, we introduce a novel 2D waveguide platform which affords a strong interaction of the evanescent tail of a guided optical wave with an external medium while only employing a very small geometrical footprint. The key feature of the platform is its ability to integrate the ultra-long path lengths by combining low propagation losses in a silicon slab with multiple reflections of the guided wave from photonic crystal (PhC) mirrors. With a reflectivity of 99.1% of our tailored PhC-mirrors, we achieve interaction paths of 25 cm within an area of less than 10 mm2. This corresponds to 0.17 dB/cm effective propagation which is much lower than the state-of-the-art loss of approximately 1 dB/cm of single mode silicon channel waveguides. In contrast to conventional waveguides, our 2D-approach leads to a decay of the guided wave power only inversely proportional to the optical path length. This entirely different characteristic is the major advantage of the 2D integrating cell waveguide platform over the conventional channel waveguide concepts that obey the Beer-Lambert law.
URI: http://tubdok.tub.tuhh.de/handle/11420/1592
DOI: 10.15480/882.1589
ISSN: 2378-0967
Institut: Optische und Elektronische Materialien E-12 
Dokumenttyp: (wissenschaftlicher) Artikel
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