Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Single-mode porous silicon waveguide interferometers with unity confinement factors for ultra-sensitive surface adlayer sensing

Journal Article · · Optics Express
DOI:https://doi.org/10.1364/OE.27.022485· OSTI ID:1546510
Guided wave-optics has emerged as a promising platform for label free biosensing. However, device sensitivity toward surface-bound small molecules is directly limited by the evanescent interaction and low confinement factor with the active sensing region. Here, we report a mesoporous silicon waveguide design and inverse fabrication technique that resolves the evanescent field interaction limitation while achieving maximal transverse confinement factors and preserving single-mode operation. The waveguide sensors are characterized in a Fabry-Perot interferometer configuration and the ultra-high sensitivity to small molecule adlayers is demonstrated. We also identify dispersion to be a promising degree of freedom for exceeding the sensitivity limits predicted by the conventional non-dispersive effective medium theory.
Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1546510
Journal Information:
Optics Express, Journal Name: Optics Express Journal Issue: 16 Vol. 27; ISSN 1094-4087; ISSN OPEXFF
Publisher:
Optical Society of America (OSA)Copyright Statement
Country of Publication:
United States
Language:
English

References (40)

Direct Imprinting of Porous Silicon via Metal-Assisted Chemical Etching journal February 2016
Patterned Microstructures of Porous Silicon by Dry-Removal Soft Lithography journal January 2003
Resonant Mode Engineering of Photonic Crystal Sensors Clad with Ultralow Refractive Index Porous Silicon Dioxide journal September 2017
Optical Refractive Index Sensors with Plasmonic and Photonic Structures: Promising and Inconvenient Truth journal February 2019
Nanoscale porous silicon waveguide for label-free DNA sensing journal May 2008
Porous Silicon-Based Photonic Biosensors: Current Status and Emerging Applications journal November 2018
Porous Silicon Gradient Refractive Index Micro-Optics journal November 2016
TiO 2 Nanophotonic Sensors for Efficient Integrated Evanescent Raman Spectroscopy journal July 2016
Biosensing Using Porous Silicon Double-Layer Interferometers:  Reflective Interferometric Fourier Transform Spectroscopy journal August 2005
Direct Imprinting of Porous Substrates: A Rapid and Low-Cost Approach for Patterning Porous Nanomaterials journal May 2011
Real-time monitoring of enzyme activity in a mesoporous silicon double layer journal February 2009
Controlling evanescent waves using silicon photonic all-dielectric metamaterials for dense integration journal May 2018
Layer-by-layer biofunctionalization of nanostructured porous silicon for high-sensitivity and high-selectivity label-free affinity biosensing journal December 2018
Quantitative analysis of the sensitivity of porous silicon optical biosensors journal April 2006
Characterization of sensing capability of optofluidic ring resonator biosensors journal July 2010
Slow light in photonic crystal waveguides journal April 2007
Optimization of porous silicon waveguide design for micro-ring resonator sensing applications journal June 2018
Label-Free Biosensor Arrays Based on Silicon Ring Resonators and High-Speed Optical Scanning Instrumentation journal January 2010
A Porous Silicon-Based Optical Interferometric Biosensor journal October 1997
Mid-infrared plasmonic biosensing with graphene journal July 2015
Optimized sensitivity of Silicon-on-Insulator (SOI) strip waveguide resonator sensor journal January 2017
Optical sensing by optimized silicon slot waveguides journal January 2007
Dichroic rugate filters based on birefringent porous silicon journal January 2008
First-principle derivation of gain in high-index-contrast waveguides journal January 2008
Defect-mediated resonance shift of silicon-on-insulator racetrack resonators journal January 2011
Birefringent porous silicon membranes for optical sensing journal January 2011
Porous silicon ring resonator for compact, high sensitivity biosensing applications journal January 2015
Ultra-broadband dispersion engineering of nanophotonic waveguides journal January 2016
Experimental study of the sensitivity of a porous silicon ring resonator sensor using continuous in-flow measurements journal January 2017
Surface sensing with integrated optical waveguides: a design guideline journal January 2018
Photonic crystal nanobeam biosensors based on porous silicon journal January 2019
Transparent subdiffraction optics: nanoscale light confinement without metal journal January 2014
Transparent subdiffraction optics: nanoscale light confinement without metal conference January 2015
Liquid Core ARROW Waveguides: A Promising Photonic Structure for Integrated Optofluidic Microsensors journal March 2016
Optical Microcavity: Sensing down to Single Molecules and Atoms journal February 2011
Plasmonic Nanostructures for Nano-Scale Bio-Sensing journal November 2011
Label-Free Biosensor Imaging on Photonic Crystal Surfaces journal August 2015
Sensors and Biosensors for the Determination of Small Molecule Biological Toxins journal September 2008
Controlling evanescent waves using silicon photonic all-dielectric metamaterials for dense integration text January 2017
Surface sensing with integrated optical waveguides: a design guideline text January 2018

Similar Records

Narrowband optical filter based on a Fabry-Perot interferometer with two waveguide-grating mirrors
Journal Article · Thu May 31 00:00:00 EDT 2007 · Quantum Electronics (Woodbury, N.Y.) · OSTI ID:21466673

Fabry-Perot interferometer utilized for displacement measurement in a large measuring range
Journal Article · Wed Sep 15 00:00:00 EDT 2010 · Review of Scientific Instruments · OSTI ID:22055722

Influence of intensity loss in the cavity of a folded Fabry-Perot interferometer on interferometric signals
Journal Article · Wed Jun 15 00:00:00 EDT 2011 · Review of Scientific Instruments · OSTI ID:22062340

Related Subjects