Proceedings ArticleDOI
Air-suspended polymer rib waveguides
Christoph Prokop,Christoph Prokop,Philipp Kleeßen,Nico Irmler,Arnan Mitchell,Christian Karnutsch +5 more
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In this paper, a method for laminating thin polymer films onto structured polymer layers that exhibit an air cavity is presented, where a flat PDMS stamp is used to transfer polymer films over areas of several hundred square microns.Abstract:
In order to achieve a high refractive index contrast for air-suspended photonic devices, we present a method for laminating thin polymer films onto structured polymer layers that exhibit an air cavity. By using a flat PDMS stamp, polymer films can be transferred over areas of several hundred square microns. On top of the air-suspended slab a second layer of photoresist can be spun and subsequently every desired photonic structure can be defined by using standard photolithography. Here, to demonstrate the feasibility of our lamination method for polymer photonic devices, we present optical modeling and experimental results of air-suspended single mode rib waveguides. Waveguiding is shown for visible and infrared light and a beam profile for λ = 1550 nm is presented that underpins single mode behavior of the rib waveguide.read more
Citations
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Journal ArticleDOI
Design of all-polymer asymmetric Mach-Zehnder interferometer sensors.
TL;DR: New design concepts for all-polymer integrated optical Mach-Zehnder interferometers (MZIs) optimized for environmental sensing are presented, and the form of structures with optimized sensitivity and operating characteristics are derived.
Journal ArticleDOI
Air-Suspended SU-8 Strip Waveguides With High Refractive Index Contrast
TL;DR: In this article, free-standing SU-8 waveguides with high refractive index contrast are presented, where SiO2 cladding is selectively etched, leaving only air as a cladding material.
Air-suspended single-mode polymer waveguides towards highly sensitive optofluidic sensors
TL;DR: In this paper, a polymer lamination method is presented that enables efficient light coupling into air-suspended polymer waveguides by grating couplers which can then be exploited for research towards a large range of applications in the field of microfl
References
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Journal ArticleDOI
Large single-mode rib waveguides in GeSi-Si and Si-on-SiO/sub 2/
TL;DR: In this article, mode-matching and beam-propagation methods are used to analyze single-mode operation of optical GeSi-Si and Si-SiO/sub 2/ semiconductor rib waveguides.
Journal ArticleDOI
Mode dispersion in diffused channel waveguides by the effective index method
G B Hocker,William K. Burns +1 more
TL;DR: The effective index method for calculating waveguide mode dispersion is reviewed and applied to uniform rectangular optical waveguides with both small and large index differences and is shown to be at least as accurate as other approximate techniques.
Journal ArticleDOI
Design and fabrication of silicon photonic crystal optical waveguides
TL;DR: In this paper, the authors have designed and fabricated waveguides that incorporate two-dimensional (2-D) photonic crystal geometry for lateral confinement of light, and total internal reflection for vertical confinement.
Journal ArticleDOI
The single-mode condition for semiconductor rib waveguides with large cross section
TL;DR: In this article, a comparison of the single-mode condition for semiconductor rib waveguides with large cross section obtained by the effective index method and the corrected formula proposed by Soref et al. with experimental data is carried out.
Proceedings ArticleDOI
Simple and low cost fabrication of embedded micro-channels by using a new thick-film photoplastic
TL;DR: In this article, the SU-8 photoresist has outstanding properties, allowing the realisation of high aspect ratio microstructures, which can be used for the realization of thermal flow-sensors.