Please use this identifier to cite or link to this item: https://doi.org/10.15480/882.1589
This item is licensed with a CreativeCommons licence by/4.0
Publisher DOI: 10.1063/1.5001486
Title: Integrating cell on chip : novel waveguide platform employing ultra-long optical paths
Language: English
Authors: Fohrmann, Lena Simone 
Sommer, Gerrit 
Pitruzzello, Giampaolo 
Krauss, Thomas F. 
Petrov, Alexander 
Eich, Manfred 
Issue Date: 2017
Publisher: AIP Publishing
Source: APL Photonics 9 (2): 096102- (2017)
Journal or Series Name: APL photonics 
Abstract (english): 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
Institute: Optische und Elektronische Materialien E-12 
Type: (wissenschaftlicher) Artikel
Project: Open Access Publizieren 2016 - 2017 / Technische Universität Hamburg-Harburg 
Appears in Collections:Publications (tub.dok)

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